/*
	Redactor II
	Version 2.4
	Updated: March 7, 2017

	http://imperavi.com/redactor/

	Copyright (c) 2009-2017, Imperavi LLC.
	License: http://imperavi.com/redactor/license/

	Usage: $('#content').redactor();
*/

(function($)
{
	'use strict';

	if (!Function.prototype.bind)
	{
		Function.prototype.bind = function(scope)
		{
			var fn = this;
			return function()
			{
				return fn.apply(scope);
			};
		};
	}

	var uuid = 0;

	// Plugin
	$.fn.redactor = function(options)
	{
		var val = [];
		var args = Array.prototype.slice.call(arguments, 1);

		if (typeof options === 'string')
		{
			this.each(function()
			{
				var instance = $.data(this, 'redactor');
				var func;

				if (options.search(/\./) !== '-1')
				{
					func = options.split('.');
					if (typeof instance[func[0]] !== 'undefined')
					{
						func = instance[func[0]][func[1]];
					}
				}
				else
				{
					func = instance[options];
				}

				if (typeof instance !== 'undefined' && $.isFunction(func))
				{
					var methodVal = func.apply(instance, args);
					if (methodVal !== undefined && methodVal !== instance)
					{
						val.push(methodVal);
					}
				}
				else
				{
					$.error('No such method "' + options + '" for Redactor');
				}
			});
		}
		else
		{
			this.each(function()
			{
				$.data(this, 'redactor', {});
				$.data(this, 'redactor', Redactor(this, options));
			});
		}

		if (val.length === 0)
		{
			return this;
		}
		else if (val.length === 1)
		{
			return val[0];
		}
		else
		{
			return val;
		}

	};

	// Initialization
	function Redactor(el, options)
	{
		return new Redactor.prototype.init(el, options);
	}

	// Options
	$.Redactor = Redactor;
	$.Redactor.VERSION = '2.3';
	$.Redactor.modules = ['air', 'autosave', 'block', 'buffer', 'build', 'button', 'caret', 'clean', 'code', 'core', 'detect', 'dropdown',
						  'events', 'file', 'focus', 'image', 'indent', 'inline', 'insert', 'keydown', 'keyup',
						  'lang', 'line', 'link', 'linkify', 'list', 'marker', 'modal', 'observe', 'offset', 'paragraphize', 'paste', 'placeholder',
						  'progress', 'selection', 'shortcuts', 'storage', 'toolbar', 'upload', 'uploads3', 'utils',

						  'browser' // deprecated
						  ];

	$.Redactor.settings = {};
	$.Redactor.opts = {

		// settings
		animation: false,
		lang: 'en',
		direction: 'ltr',
		spellcheck: true,
		overrideStyles: true,
		scrollTarget: document,

		focus: false,
		focusEnd: false,

		clickToEdit: false,
		structure: false,

		tabindex: false,

		minHeight: false, // string
		maxHeight: false, // string

		maxWidth: false, // string

		plugins: false, // array
		callbacks: {},

		placeholder: false,

		linkify: true,
		enterKey: true,

		pastePlainText: false,
		pasteImages: true,
		pasteLinks: true,
		pasteBlockTags: ['pre', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'table', 'tbody', 'thead', 'tfoot', 'th', 'tr', 'td', 'ul', 'ol', 'li', 'blockquote', 'p', 'figure', 'figcaption'],
		pasteInlineTags: ['br', 'strong', 'ins', 'code', 'del', 'span', 'samp', 'kbd', 'sup', 'sub', 'mark', 'var', 'cite', 'small', 'b', 'u', 'em', 'i'],

		preClass: false, // string
		preSpaces: 4, // or false
		tabAsSpaces: false, // true or number of spaces
		tabKey: true,

		autosave: false, // false or url
		autosaveName: false,
		autosaveFields: false,

		imageUpload: null,
		imageUploadParam: 'file',
		imageUploadFields: false,
		imageUploadForms: false,
        imageTag: 'figure',
        imageEditable: true,
		imageCaption: true,

		imagePosition: false,
		imageResizable: false,
		imageFloatMargin: '10px',

		dragImageUpload: true,
		multipleImageUpload: true,
		clipboardImageUpload: true,

		fileUpload: null,
		fileUploadParam: 'file',
		fileUploadFields: false,
		fileUploadForms: false,
		dragFileUpload: true,

		s3: false,

        linkNewTab: false,
		linkTooltip: true,
		linkNofollow: false,
		linkSize: 30,
		pasteLinkTarget: false,

		videoContainerClass: 'video-container',

		toolbar: true,
		toolbarFixed: true,
		toolbarFixedTarget: document,
		toolbarFixedTopOffset: 0, // pixels
		toolbarExternal: false, // ID selector

		air: false,
		airWidth: false,

		formatting: ['p', 'blockquote', 'pre', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6'],
		formattingAdd: false,

		buttons: ['format', 'bold', 'italic', 'deleted', 'lists', 'image', 'file', 'link'], // + 'horizontalrule', 'underline', 'ol', 'ul', 'indent', 'outdent'

		buttonsHide: [],
		buttonsHideOnMobile: [],

		script: true,
		removeNewlines: false,
		removeComments: true,
		replaceTags: {
			'b': 'strong',
			'i': 'em',
			'strike': 'del'
		},

		// shortcuts
		shortcuts: {
			'ctrl+shift+m, meta+shift+m': { func: 'inline.removeFormat' },
			'ctrl+b, meta+b': { func: 'inline.format', params: ['bold'] },
			'ctrl+i, meta+i': { func: 'inline.format', params: ['italic'] },
			'ctrl+h, meta+h': { func: 'inline.format', params: ['superscript'] },
			'ctrl+l, meta+l': { func: 'inline.format', params: ['subscript'] },
			'ctrl+k, meta+k': { func: 'link.show' },
			'ctrl+shift+7':   { func: 'list.toggle', params: ['orderedlist'] },
			'ctrl+shift+8':   { func: 'list.toggle', params: ['unorderedlist'] }
		},
		shortcutsAdd: false,

		activeButtons: ['deleted', 'italic', 'bold'],
		activeButtonsStates: {
			b: 'bold',
			strong: 'bold',
			i: 'italic',
			em: 'italic',
			del: 'deleted',
			strike: 'deleted'
		},

		// private lang
		langs: {
			en: {

				"format": "Format",
				"image": "Image",
				"file": "File",
				"link": "Link",
				"bold": "Bold",
				"italic": "Italic",
				"deleted": "Strikethrough",
				"underline": "Underline",
				"bold-abbr": "B",
				"italic-abbr": "I",
				"deleted-abbr": "S",
				"underline-abbr": "U",
				"lists": "Lists",
				"link-insert": "Insert link",
				"link-edit": "Edit link",
				"link-in-new-tab": "Open link in new tab",
				"unlink": "Unlink",
				"cancel": "Cancel",
				"close": "Close",
				"insert": "Insert",
				"save": "Save",
				"delete": "Delete",
				"text": "Text",
				"edit": "Edit",
				"title": "Title",
				"paragraph": "Normal text",
				"quote": "Quote",
				"code": "Code",
				"heading1": "Heading 1",
				"heading2": "Heading 2",
				"heading3": "Heading 3",
				"heading4": "Heading 4",
				"heading5": "Heading 5",
				"heading6": "Heading 6",
				"filename": "Name",
				"optional": "optional",
				"unorderedlist": "Unordered List",
				"orderedlist": "Ordered List",
				"outdent": "Outdent",
				"indent": "Indent",
				"horizontalrule": "Line",
				"upload-label": "Drop file here or ",
				"caption": "Caption",

				"bulletslist": "Bullets",
				"numberslist": "Numbers",

				"image-position": "Position",
				"none": "None",
				"left": "Left",
				"right": "Right",
				"center": "Center",

                "width": "Width",
                "height": "Height",


				"accessibility-help-label": "Rich text editor"
			}
		},

		// private
		type: 'textarea', // textarea, div, inline, pre
		inline: false,
		buffer: [],
		rebuffer: [],
		inlineTags: ['a', 'span', 'strong', 'strike', 'b', 'u', 'em', 'i', 'code', 'del', 'ins', 'samp', 'kbd', 'sup', 'sub', 'mark', 'var', 'cite', 'small'],
		blockTags: ['pre', 'ul', 'ol', 'li', 'p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',  'dl', 'dt', 'dd', 'div', 'td', 'blockquote', 'output', 'figcaption', 'figure', 'address', 'section', 'header', 'footer', 'aside', 'article', 'iframe'],
		paragraphize: true,
		paragraphizeBlocks: ['table', 'div', 'pre', 'form', 'ul', 'ol', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'dl', 'blockquote', 'figcaption',
							'address', 'section', 'header', 'footer', 'aside', 'article', 'object', 'style', 'script', 'iframe', 'select', 'input', 'textarea',
							'button', 'option', 'map', 'area', 'math', 'hr', 'fieldset', 'legend', 'hgroup', 'nav', 'figure', 'details', 'menu', 'summary', 'p'],
		emptyHtml: '<p>&#x200b;</p>',
		invisibleSpace: '&#x200b;',
		imageTypes: ['image/png', 'image/jpeg', 'image/gif'],
		userAgent: navigator.userAgent.toLowerCase(),
		observe: {
			dropdowns: []
		},
		regexps: {
			linkyoutube: /https?:\/\/(?:[0-9A-Z-]+\.)?(?:youtu\.be\/|youtube\.com\S*[^\w\-\s])([\w\-]{11})(?=[^\w\-]|$)(?![?=&+%\w.\-]*(?:['"][^<>]*>|<\/a>))[?=&+%\w.-]*/ig,
			linkvimeo: /https?:\/\/(www\.)?vimeo.com\/(\d+)($|\/)/,
			linkimage: /((https?|www)[^\s]+\.)(jpe?g|png|gif)(\?[^\s-]+)?/ig,
			url: /(https?:\/\/(?:www\.|(?!www))[^\s\.]+\.[^\s]{2,}|www\.[^\s]+\.[^\s]{2,})/ig
		}

	};

	// Functionality
	Redactor.fn = $.Redactor.prototype = {

		keyCode: {
			BACKSPACE: 8,
			DELETE: 46,
			UP: 38,
			DOWN: 40,
			ENTER: 13,
			SPACE: 32,
			ESC: 27,
			TAB: 9,
			CTRL: 17,
			META: 91,
			SHIFT: 16,
			ALT: 18,
			RIGHT: 39,
			LEFT: 37,
			LEFT_WIN: 91
		},

		// =init
		init: function(el, options)
		{
			this.$element = $(el);
			this.uuid = uuid++;

			this.loadOptions(options);
			this.loadModules();

			// click to edit
			if (this.opts.clickToEdit && !this.$element.hasClass('redactor-click-to-edit'))
			{
				return this.loadToEdit(options);
			}
			else if (this.$element.hasClass('redactor-click-to-edit'))
			{
				this.$element.removeClass('redactor-click-to-edit');
			}

			// block & inline test tag regexp
			this.reIsBlock = new RegExp('^(' + this.opts.blockTags.join('|' ).toUpperCase() + ')$', 'i');
			this.reIsInline = new RegExp('^(' + this.opts.inlineTags.join('|' ).toUpperCase() + ')$', 'i');

			// set up drag upload
			this.opts.dragImageUpload = (this.opts.imageUpload === null) ? false : this.opts.dragImageUpload;
			this.opts.dragFileUpload = (this.opts.fileUpload === null) ? false : this.opts.dragFileUpload;

			// formatting storage
			this.formatting = {};

			// load lang
			this.lang.load();

			// extend shortcuts
			$.extend(this.opts.shortcuts, this.opts.shortcutsAdd);

			// set editor
			this.$editor = this.$element;

			// detect type of editor
			this.detectType();

			// start callback
			this.core.callback('start');
			this.core.callback('startToEdit');

			// build
			this.start = true;
			this.build.start();

		},
		detectType: function()
		{
			if (this.build.isInline() || this.opts.inline)
			{
				this.opts.type = 'inline';
			}
			else if (this.build.isTag('DIV'))
			{
				this.opts.type = 'div';
			}
			else if (this.build.isTag('PRE'))
			{
				this.opts.type = 'pre';
			}
		},
		loadToEdit: function(options)
		{

			this.$element.on('click.redactor-click-to-edit', $.proxy(function()
			{
				this.initToEdit(options);

			}, this));

			this.$element.addClass('redactor-click-to-edit');

			return;
		},
		initToEdit: function(options)
		{
			$.extend(options.callbacks,  {
				startToEdit: function()
				{
					this.insert.node(this.marker.get(), false);
				},
				initToEdit: function()
				{
					this.selection.restore();
					this.clickToCancelStorage = this.code.get();

					// cancel
					$(this.opts.clickToCancel).off('.redactor-click-to-edit');
					$(this.opts.clickToCancel).show().on('click.redactor-click-to-edit', $.proxy(function(e)
					{
						e.preventDefault();

						this.core.destroy();
						this.events.syncFire = false;
						this.$element.html(this.clickToCancelStorage);
						this.core.callback('cancel', this.clickToCancelStorage);
						this.events.syncFire = true;
						this.clickToCancelStorage = '';
						$(this.opts.clickToCancel).hide();
						$(this.opts.clickToSave).hide();

						this.$element.on('click.redactor-click-to-edit', $.proxy(function()
						{
							this.initToEdit(options);
						}, this));

						this.$element.addClass('redactor-click-to-edit');

					}, this));

					// save
					$(this.opts.clickToSave).off('.redactor-click-to-edit');
					$(this.opts.clickToSave).show().on('click.redactor-click-to-edit', $.proxy(function(e)
					{
						e.preventDefault();

						this.core.destroy();
						this.core.callback('save', this.code.get());
						$(this.opts.clickToCancel).hide();
						$(this.opts.clickToSave).hide();
						this.$element.on('click.redactor-click-to-edit', $.proxy(function()
						{
							this.initToEdit(options);
						}, this));
						this.$element.addClass('redactor-click-to-edit');

					}, this));
				}

			});

			this.$element.redactor(options);
			this.$element.off('.redactor-click-to-edit');

		},
		loadOptions: function(options)
		{
			var settings = {};

			// check namespace
			if (typeof $.Redactor.settings.namespace !== 'undefined')
			{
				 if (this.$element.hasClass($.Redactor.settings.namespace))
				 {
					 settings = $.Redactor.settings;
				 }
			}
			else
			{
				settings = $.Redactor.settings;
			}

			this.opts = $.extend(
				{},
				$.Redactor.opts,
				this.$element.data(),
				options
			);

			this.opts = $.extend(true, this.opts, settings);

		},
		getModuleMethods: function(object)
		{
			return Object.getOwnPropertyNames(object).filter(function(property)
			{
				return typeof object[property] === 'function';
			});
		},
		loadModules: function()
		{
			var len = $.Redactor.modules.length;
			for (var i = 0; i < len; i++)
			{
				this.bindModuleMethods($.Redactor.modules[i]);
			}
		},
		bindModuleMethods: function(module)
		{
			if (typeof this[module] === 'undefined')
			{
				return;
			}

			// init module
			this[module] = this[module]();

			var methods = this.getModuleMethods(this[module]);
			var len = methods.length;

			// bind methods
			for (var z = 0; z < len; z++)
			{
				this[module][methods[z]] = this[module][methods[z]].bind(this);
			}
		},

		// =air
		air: function()
		{
			return {
				enabled: false,
				collapsed: function()
				{
					if (this.opts.air)
					{
						this.selection.get().collapseToStart();
					}
				},
				collapsedEnd: function()
				{
					if (this.opts.air)
					{
						this.selection.get().collapseToEnd();
					}
				},
				build: function()
				{
					if (this.detect.isMobile())
					{
						return;
					}

					this.button.hideButtons();
					this.button.hideButtonsOnMobile();

					if (this.opts.buttons.length === 0)
					{
						return;
					}

					this.$air = this.air.createContainer();

					if (this.opts.airWidth !== false)
					{
						this.$air.css('width', this.opts.airWidth);
					}

					this.air.append();
					this.button.$toolbar = this.$air;
					this.button.setFormatting();
					this.button.load(this.$air);

					this.core.editor().on('mouseup.redactor', this, $.proxy(function(e)
					{
						if (this.selection.text() !== '')
						{
							this.air.show(e);
						}
					}, this));

				},
				append: function()
				{
					this.$air.appendTo('body');
				},
				createContainer: function()
				{
					return $('<ul>').addClass('redactor-air').attr({ 'id': 'redactor-air-' + this.uuid, 'role': 'toolbar' }).hide();
				},
				show: function (e)
				{
					//this.marker.remove();
					this.selection.saveInstant();
					//this.selection.restore(false);

					$('.redactor-air').hide();

					var leftFix = 0;
					var width = this.$air.innerWidth();

					if ($(window).width() < (e.clientX + width))
					{
						leftFix = 200;
					}

					this.$air.css({
						left: (e.clientX - leftFix) + 'px',
						top: (e.clientY + 10 + $(document).scrollTop()) + 'px'
					}).show();

					this.air.enabled = true;
					this.air.bindHide();
				},
				bindHide: function()
				{
					$(document).on('mousedown.redactor-air.' + this.uuid, $.proxy(function(e)
					{
						var dropdown = $(e.target).closest('.redactor-dropdown').length;

						if ($(e.target).closest(this.$air).length === 0 && dropdown === 0)
						{
							var hide = this.air.hide(e);
							if (hide !== false)
							{
								this.marker.remove();
							}
						}

					}, this)).on('keydown.redactor-air.' + this.uuid, $.proxy(function(e)
					{
						var key = e.which;
						if ((!this.utils.isRedactorParent(e.target) && !$(e.target).hasClass('redactor-in')) || $(e.target).closest('#redactor-modal').length !== 0)
						{
							return;
						}

						if (key === this.keyCode.ESC)
						{
							this.selection.get().collapseToStart();
							//this.marker.remove();
						}
						else if (key === this.keyCode.BACKSPACE || key === this.keyCode.DELETE)
						{
							var sel = this.selection.get();
							var range = this.selection.range(sel);
							range.deleteContents();
							//this.marker.remove();
						}
						else if (key === this.keyCode.ENTER)
						{
							this.selection.get().collapseToEnd();
							//this.marker.remove();
						}

						if (this.air.enabled)
						{
							this.air.hide(e);
						}
						else
						{
							this.selection.get().collapseToStart();
							//this.marker.remove();
						}


					}, this));
				},
				hide: function(e)
				{
					var ctrl = e.ctrlKey || e.metaKey || (e.shiftKey && e.altKey);
					if (ctrl)
					{
						return false;
					}

					this.button.setInactiveAll();
					this.$air.fadeOut(100);
					this.air.enabled = false;
					$(document).off('mousedown.redactor-air.' + this.uuid);
					$(document).off('keydown.redactor-air.' + this.uuid);

				}
			};
		},

		// =autosave
		autosave: function()
		{
			return {
				enabled: false,
				html: false,
				init: function()
				{
					if (!this.opts.autosave)
					{
						return;
					}

					this.autosave.enabled = true;
					this.autosave.name = (this.opts.autosaveName) ? this.opts.autosaveName : this.$textarea.attr('name');

				},
				is: function()
				{
					return this.autosave.enabled;
				},
				send: function()
				{
					if (!this.opts.autosave)
					{
						return;
					}

					this.autosave.source = this.code.get();

					if (this.autosave.html === this.autosave.source)
					{
						return;
					}

					// data
					var data = {};
					data.name = this.autosave.name;
					data[this.autosave.name] = this.autosave.source;
					data = this.autosave.getHiddenFields(data);

					// ajax
					var jsxhr = $.ajax({
						url: this.opts.autosave,
						type: 'post',
						data: data
					});

					jsxhr.done(this.autosave.success);
				},
				getHiddenFields: function(data)
				{
					if (this.opts.autosaveFields === false || typeof this.opts.autosaveFields !== 'object')
					{
						return data;
					}

					$.each(this.opts.autosaveFields, $.proxy(function(k, v)
					{
						if (v !== null && v.toString().indexOf('#') === 0)
						{
							v = $(v).val();
						}

						data[k] = v;

					}, this));

					return data;

				},
				success: function(data)
				{
					var json;
					try
					{
						json = JSON.parse(data);
					}
					catch(e)
					{
						//data has already been parsed
						json = data;
					}

					var callbackName = (typeof json.error === 'undefined') ? 'autosave' :  'autosaveError';

					this.core.callback(callbackName, this.autosave.name, json);
					this.autosave.html = this.autosave.source;
				},
				disable: function()
				{
					this.autosave.enabled = false;

					clearInterval(this.autosaveTimeout);
				}
			};
		},

		// =block
		block: function()
		{
			return {
				format: function(tag, attr, value, type)
				{
					tag = (tag === 'quote') ? 'blockquote' : tag;

					this.block.tags = ['p', 'blockquote', 'pre', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'div', 'figure'];
					if ($.inArray(tag, this.block.tags) === -1)
					{
						return;
					}

					if (tag === 'p' && typeof attr === 'undefined')
					{
						// remove all
						attr = 'class';
					}

					this.placeholder.hide();
					this.buffer.set();

					return (this.utils.isCollapsed()) ? this.block.formatCollapsed(tag, attr, value, type) : this.block.formatUncollapsed(tag, attr, value, type);
				},
				formatCollapsed: function(tag, attr, value, type)
				{
					this.selection.save();

					var block = this.selection.block();
					var currentTag = block.tagName.toLowerCase();
					if ($.inArray(currentTag, this.block.tags) === -1)
					{
						this.selection.restore();
						return;
					}

					if (currentTag === tag)
					{
						tag = 'p';
					}

                    var replaced;
                    if (currentTag === 'blockquote' && this.utils.isEndOfElement(block))
                    {
                        this.marker.remove();

                        replaced = document.createElement('p');
                        replaced.innerHTML = this.opts.invisibleSpace;

                        $(block).after(replaced);
                        this.caret.start(replaced);
                        var $last = $(block).children().last();

                        if ($last.length !== 0 && $last[0].tagName === 'BR')
                        {
                            $last.remove();
                        }
                    }
                    else
                    {
					    replaced = this.utils.replaceToTag(block, tag);
                    }

					if (typeof attr === 'object')
					{
						type = value;
						for (var key in attr)
						{
							replaced = this.block.setAttr(replaced, key, attr[key], type);
						}
					}
					else
					{
						replaced = this.block.setAttr(replaced, attr, value, type);
					}


					// trim pre
					if (tag === 'pre' && replaced.length === 1)
					{
						$(replaced).html($.trim($(replaced).html()));
					}

					this.selection.restore();
					this.block.removeInlineTags(replaced);

					return replaced;
				},
				formatUncollapsed: function(tag, attr, value, type)
				{
					this.selection.save();

					var replaced = [];
					var blocks = this.selection.blocks();

                    if (blocks[0] && $(blocks[0]).hasClass('redactor-in'))
                    {
                        blocks = $(blocks[0]).find(this.opts.blockTags.join(', '));
					}

					var len = blocks.length;
					for (var i = 0; i < len; i++)
					{
						var currentTag = blocks[i].tagName.toLowerCase();
						if ($.inArray(currentTag, this.block.tags) !== -1 && currentTag !== 'figure')
						{
							var block = this.utils.replaceToTag(blocks[i], tag);

							if (typeof attr === 'object')
							{
								type = value;
								for (var key in attr)
								{
									block = this.block.setAttr(block, key, attr[key], type);
								}
							}
							else
							{
								block = this.block.setAttr(block, attr, value, type);
							}

							replaced.push(block);
							this.block.removeInlineTags(block);
						}
					}

					this.selection.restore();

					// combine pre
					if (tag === 'pre' && replaced.length !== 0)
					{
						var first = replaced[0];
						$.each(replaced, function(i,s)
						{
							if (i !== 0)
							{
								$(first).append("\n" + $.trim(s.html()));
								$(s).remove();
							}
						});

						replaced = [];
						replaced.push(first);
					}

					return replaced;
				},
				removeInlineTags: function(node)
				{
					node = node[0] || node;

					var tags = this.opts.inlineTags;
					var blocks = ['PRE', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6'];

					if ($.inArray(node.tagName, blocks) === - 1)
					{
						return;
					}

					if (node.tagName !== 'PRE')
					{
						var index = tags.indexOf('a');
						tags.splice(index, 1);
					}

					$(node).find(tags.join(',')).not('.redactor-selection-marker').contents().unwrap();
				},
				setAttr: function(block, attr, value, type)
				{
					if (typeof attr === 'undefined')
					{
						return block;
					}

					var func = (typeof type === 'undefined') ? 'replace' : type;

					if (attr === 'class')
					{
						block = this.block[func + 'Class'](value, block);
					}
					else
					{
						if (func === 'remove')
						{
							block = this.block[func + 'Attr'](attr, block);
						}
						else if (func === 'removeAll')
						{
							block = this.block[func + 'Attr'](attr, block);
						}
						else
						{
							block = this.block[func + 'Attr'](attr, value, block);
						}
					}

					return block;

				},
				getBlocks: function(block)
				{
					return (typeof block === 'undefined') ? this.selection.blocks() : block;
				},
				replaceClass: function(value, block)
				{
					return $(this.block.getBlocks(block)).removeAttr('class').addClass(value)[0];
				},
				toggleClass: function(value, block)
				{
					return $(this.block.getBlocks(block)).toggleClass(value)[0];
				},
				addClass: function(value, block)
				{
					return $(this.block.getBlocks(block)).addClass(value)[0];
				},
				removeClass: function(value, block)
				{
					return $(this.block.getBlocks(block)).removeClass(value)[0];
				},
				removeAllClass: function(block)
				{
					return $(this.block.getBlocks(block)).removeAttr('class')[0];
				},
				replaceAttr: function(attr, value, block)
				{
					block = this.block.removeAttr(attr, block);

					return $(block).attr(attr, value)[0];
				},
				toggleAttr: function(attr, value, block)
				{
					block = this.block.getBlocks(block);

					var self = this;
					var returned = [];
					$.each(block, function(i,s)
					{
						var $el = $(s);
						if ($el.attr(attr))
						{
							returned.push(self.block.removeAttr(attr, s));
						}
						else
						{
							returned.push(self.block.addAttr(attr, value, s));
						}
					});

					return returned;

				},
				addAttr: function(attr, value, block)
				{
					return $(this.block.getBlocks(block)).attr(attr, value)[0];
				},
				removeAttr: function(attr, block)
				{
					return $(this.block.getBlocks(block)).removeAttr(attr)[0];
				},
				removeAllAttr: function(block)
				{
					block = this.block.getBlocks(block);

					var returned = [];
					$.each(block, function(i,s)
					{
						if (typeof s.attributes === 'undefined')
						{
							returned.push(s);
						}

						var $el = $(s);
						var len = s.attributes.length;
						for (var z = 0; z < len; z++)
						{
							$el.removeAttr(s.attributes[z].name);
						}

						returned.push($el[0]);
					});

					return returned;
				}
			};
		},

		// buffer
		buffer: function()
		{
			return {
				set: function(type)
				{
    				if (typeof type === 'undefined')
                    {
                        this.buffer.clear();
                    }

					if (typeof type === 'undefined' || type === 'undo')
					{
						this.buffer.setUndo();
					}
					else
					{
						this.buffer.setRedo();
					}
				},
				setUndo: function()
				{
                    var saved = this.selection.saveInstant();

					var last = this.opts.buffer[this.opts.buffer.length-1];
					var current = this.core.editor().html();

					var save = (typeof last !== 'undefined' && (last[0] === current)) ? false : true;
    				if (save)
    				{
						this.opts.buffer.push([current, saved]);
					}

					//this.selection.restoreInstant();
				},
				setRedo: function()
				{
					var saved = this.selection.saveInstant();
					this.opts.rebuffer.push([this.core.editor().html(), saved]);
					//this.selection.restoreInstant();
				},
				add: function()
				{
					this.opts.buffer.push([this.core.editor().html(), 0]);
				},
				undo: function()
				{
					if (this.opts.buffer.length === 0)
					{
						return;
					}

					var buffer = this.opts.buffer.pop();

					this.buffer.set('redo');
					this.core.editor().html(buffer[0]);

					this.selection.restoreInstant(buffer[1]);
					this.observe.load();
				},
				redo: function()
				{
					if (this.opts.rebuffer.length === 0)
					{
						return;
					}

					var buffer = this.opts.rebuffer.pop();

					this.buffer.set('undo');
					this.core.editor().html(buffer[0]);

					this.selection.restoreInstant(buffer[1]);
					this.observe.load();
				},
				clear: function()
				{
    				this.opts.rebuffer = [];
				}
			};
		},

		// =build
		build: function()
		{
			return {
				start: function()
				{
					if (this.opts.type === 'inline')
					{
						this.opts.type = 'inline';
					}
					else if (this.opts.type === 'div')
					{
						// empty
						var html = $.trim(this.$editor.html());
						if (html === '')
						{
							this.$editor.html(this.opts.emptyHtml);
						}
					}
					else if (this.opts.type === 'textarea')
					{
						this.build.startTextarea();
					}

					// set in
					this.build.setIn();

					// set id
					this.build.setId();

					// enable
					this.build.enableEditor();

					// options
					this.build.setOptions();

					// call
					this.build.callEditor();


				},
				createContainerBox: function()
				{
					this.$box = $('<div class="redactor-box" role="application" />');
				},
				setIn: function()
				{
					this.core.editor().addClass('redactor-in');
				},
				setId: function()
				{
					var id = (this.opts.type === 'textarea') ? 'redactor-uuid-' + this.uuid : this.$element.attr('id');

					this.core.editor().attr('id', (typeof id === 'undefined') ? 'redactor-uuid-' + this.uuid : id);
				},
				getName: function()
				{
					var name = this.$element.attr('name');

					return (typeof name === 'undefined') ? 'content-' + this.uuid : name;
				},
				loadFromTextarea: function()
				{
					this.$editor = $('<div />');

					// textarea
					this.$textarea = this.$element;
					this.$element.attr('name', this.build.getName());

					// place
					this.$box.insertAfter(this.$element).append(this.$editor).append(this.$element);
                    this.$editor.addClass('redactor-layer');

					if (this.opts.overrideStyles)
					{
					    this.$editor.addClass('redactor-styles');
					}

					this.$element.hide();

					this.$box.prepend('<span class="redactor-voice-label" id="redactor-voice-' + this.uuid +'" aria-hidden="false">' + this.lang.get('accessibility-help-label') + '</span>');
					this.$editor.attr({ 'aria-labelledby': 'redactor-voice-' + this.uuid, 'role': 'presentation' });
				},
				startTextarea: function()
				{
					this.build.createContainerBox();

					// load
					this.build.loadFromTextarea();

					// set code
					this.code.start(this.core.textarea().val());

					// set value
					this.core.textarea().val(this.clean.onSync(this.$editor.html()));
				},
				isTag: function(tag)
				{
					return (this.$element[0].tagName === tag);
				},
				isInline: function()
				{
					return (!this.build.isTag('TEXTAREA') && !this.build.isTag('DIV') && !this.build.isTag('PRE'));
				},
				enableEditor: function()
				{
					this.core.editor().attr({ 'contenteditable': true });
				},
				setOptions: function()
				{
					// inline
					if (this.opts.type === 'inline')
					{
						this.opts.enterKey = false;
					}

					// inline & pre
					if (this.opts.type === 'inline' || this.opts.type === 'pre')
					{
						this.opts.toolbarMobile = false;
						this.opts.toolbar = false;
						this.opts.air = false;
						this.opts.linkify = false;

					}

					// spellcheck
					this.core.editor().attr('spellcheck', this.opts.spellcheck);

					// structure
					if (this.opts.structure)
					{
						this.core.editor().addClass('redactor-structure');
					}

					// options sets only in textarea mode
					if (this.opts.type !== 'textarea')
					{
						return;
					}

					// direction
					this.core.box().attr('dir', this.opts.direction);
					this.core.editor().attr('dir', this.opts.direction);

					// tabindex
					if (this.opts.tabindex)
					{
						this.core.editor().attr('tabindex', this.opts.tabindex);
					}

					// min height
					if (this.opts.minHeight)
					{
						this.core.editor().css('min-height', this.opts.minHeight);
					}
					else
					{
						this.core.editor().css('min-height', '40px');
					}

					// max height
					if (this.opts.maxHeight)
					{
						this.core.editor().css('max-height', this.opts.maxHeight);
					}

					// max width
					if (this.opts.maxWidth)
					{
						this.core.editor().css({ 'max-width': this.opts.maxWidth, 'margin': 'auto' });
					}

				},
				callEditor: function()
				{
					this.build.disableBrowsersEditing();

					this.events.init();
					this.build.setHelpers();

					// init buttons
					if (this.opts.toolbar || this.opts.air)
					{
						this.toolbarsButtons = this.button.init();
					}

					// load toolbar
					if (this.opts.air)
					{
						this.air.build();
					}
					else if (this.opts.toolbar)
					{
						this.toolbar.build();
					}

					if (this.detect.isMobile() && this.opts.toolbarMobile && this.opts.air)
					{
						this.opts.toolbar = true;
						this.toolbar.build();
					}

					// observe dropdowns
					if (this.opts.air || this.opts.toolbar)
					{
						this.core.editor().on('mouseup.redactor-observe.' + this.uuid + ' keyup.redactor-observe.' + this.uuid + ' focus.redactor-observe.' + this.uuid + ' touchstart.redactor-observe.' + this.uuid, $.proxy(this.observe.toolbar, this));
						this.core.element().on('blur.callback.redactor', $.proxy(function()
						{
							this.button.setInactiveAll();

						}, this));
					}

					// modal templates init
					this.modal.templates();

					// plugins
					this.build.plugins();

					// autosave
					this.autosave.init();

					// sync code
					this.code.html = this.code.cleaned(this.core.editor().html());

					// init callback
					this.core.callback('init');
					this.core.callback('initToEdit');

					// get images & files list
					this.storage.observe();

					// started
					this.start = false;

				},
				setHelpers: function()
				{
					// linkify
					if (this.opts.linkify)
					{
						this.linkify.format();
					}

					// placeholder
					this.placeholder.init();

					// focus
					if (this.opts.focus)
					{
						setTimeout(this.focus.start, 100);
					}
					else if (this.opts.focusEnd)
					{
						setTimeout(this.focus.end, 100);
					}

				},
				disableBrowsersEditing: function()
				{
					try {
						// FF fix
						document.execCommand('enableObjectResizing', false, false);
						document.execCommand('enableInlineTableEditing', false, false);
						// IE prevent converting links
						document.execCommand("AutoUrlDetect", false, false);
					} catch (e) {}
				},
				plugins: function()
				{
					if (!this.opts.plugins)
					{
						return;
					}

					$.each(this.opts.plugins, $.proxy(function(i, s)
					{
						var func = (typeof RedactorPlugins !== 'undefined' && typeof RedactorPlugins[s] !== 'undefined') ? RedactorPlugins : Redactor.fn;

						if (!$.isFunction(func[s]))
						{
							return;
						}

						this[s] = func[s]();

						// get methods
						var methods = this.getModuleMethods(this[s]);
						var len = methods.length;

						// bind methods
						for (var z = 0; z < len; z++)
						{
							this[s][methods[z]] = this[s][methods[z]].bind(this);
						}

						// append lang
						if (typeof this[s].langs !== 'undefined')
						{
							var lang = {};
							if (typeof this[s].langs[this.opts.lang] !== 'undefined')
							{
								lang = this[s].langs[this.opts.lang];
							}
							else if (typeof this[s].langs[this.opts.lang] === 'undefined' && typeof this[s].langs.en !== 'undefined')
							{
								lang = this[s].langs.en;
							}

							// extend
							var self = this;
							$.each(lang, function(i,s)
							{
								if (typeof self.opts.curLang[i] === 'undefined')
								{
									self.opts.curLang[i] = s;
								}
							});
						}

						// init
						if ($.isFunction(this[s].init))
						{
							this[s].init();
						}


					}, this));

				}
			};
		},

		// =button
		button: function()
		{
			return {
				toolbar: function()
				{
					return (typeof this.button.$toolbar === 'undefined' || !this.button.$toolbar) ? this.$toolbar : this.button.$toolbar;
				},
				init: function()
				{
					return {
						format:
						{
							title: this.lang.get('format'),
							icon: true,
							dropdown:
							{
								p:
								{
									title: this.lang.get('paragraph'),
									func: 'block.format'
								},
								blockquote:
								{
									title: this.lang.get('quote'),
									func: 'block.format'
								},
								pre:
								{
									title: this.lang.get('code'),
									func: 'block.format'
								},
								h1:
								{
									title: this.lang.get('heading1'),
									func: 'block.format'
								},
								h2:
								{
									title: this.lang.get('heading2'),
									func: 'block.format'
								},
								h3:
								{
									title: this.lang.get('heading3'),
									func: 'block.format'
								},
								h4:
								{
									title: this.lang.get('heading4'),
									func: 'block.format'
								},
								h5:
								{
									title: this.lang.get('heading5'),
									func: 'block.format'
								},
								h6:
								{
									title: this.lang.get('heading6'),
									func: 'block.format'
								}
							}
						},
						bold:
						{
							title: this.lang.get('bold-abbr'),
							icon: true,
							label: this.lang.get('bold'),
							func: 'inline.format'
						},
						italic:
						{
							title: this.lang.get('italic-abbr'),
							icon: true,
							label: this.lang.get('italic'),
							func: 'inline.format'
						},
						deleted:
						{
							title: this.lang.get('deleted-abbr'),
							icon: true,
							label: this.lang.get('deleted'),
							func: 'inline.format'
						},
						underline:
						{
							title: this.lang.get('underline-abbr'),
							icon: true,
							label: this.lang.get('underline'),
							func: 'inline.format'
						},
						lists:
						{
							title: this.lang.get('lists'),
							icon: true,
							dropdown:
							{
								unorderedlist:
								{
									title: '&bull; ' + this.lang.get('unorderedlist'),
									func: 'list.toggle'
								},
								orderedlist:
								{
									title: '1. ' + this.lang.get('orderedlist'),
									func: 'list.toggle'
								},
								outdent:
								{
									title: '< ' + this.lang.get('outdent'),
									func: 'indent.decrease',
									observe: {
										element: 'li',
										out: {
											attr: {
												'class': 'redactor-dropdown-link-inactive',
												'aria-disabled': true
											}
										}
									}
								},
								indent:
								{
									title: '> ' + this.lang.get('indent'),
									func: 'indent.increase',
									observe: {
										element: 'li',
										out: {
											attr: {
												'class': 'redactor-dropdown-link-inactive',
												'aria-disabled': true
											}
										}
									}
								}
							}
						},
						ul:
						{
							title: '&bull; ' + this.lang.get('bulletslist'),
							icon: true,
							func: 'list.toggle'
						},
						ol:
						{
							title: '1. ' + this.lang.get('numberslist'),
							icon: true,
							func: 'list.toggle'
						},
						outdent:
						{
							title: this.lang.get('outdent'),
							icon: true,
							func: 'indent.decrease'
						},
						indent:
						{
							title: this.lang.get('indent'),
							icon: true,
							func: 'indent.increase'
						},
						image:
						{
							title: this.lang.get('image'),
							icon: true,
							func: 'image.show'
						},
						file:
						{
							title: this.lang.get('file'),
							icon: true,
							func: 'file.show'
						},
						link:
						{
							title: this.lang.get('link'),
							icon: true,
							dropdown:
							{
								link:
								{
									title: this.lang.get('link-insert'),
									func: 'link.show',
									observe: {
										element: 'a',
										'in': {
											title: this.lang.get('link-edit'),
										},
										out: {
											title: this.lang.get('link-insert')
										}
									}
								},
								unlink:
								{
									title: this.lang.get('unlink'),
									func: 'link.unlink',
									observe: {
										element: 'a',
										out: {
											attr: {
												'class': 'redactor-dropdown-link-inactive',
												'aria-disabled': true
											}
										}
									}
								}
							}
						},
						horizontalrule:
						{
							title: this.lang.get('horizontalrule'),
							icon: true,
							func: 'line.insert'
						}
					};
				},
				setFormatting: function()
				{
					$.each(this.toolbarsButtons.format.dropdown, $.proxy(function (i, s)
					{
						if ($.inArray(i, this.opts.formatting) === -1)
						{
							delete this.toolbarsButtons.format.dropdown[i];
						}

					}, this));

				},
				hideButtons: function()
				{
					if (this.opts.buttonsHide.length !== 0)
					{
						this.button.hideButtonsSlicer(this.opts.buttonsHide);
					}
				},
				hideButtonsOnMobile: function()
				{
					if (this.detect.isMobile() && this.opts.buttonsHideOnMobile.length !== 0)
					{
						this.button.hideButtonsSlicer(this.opts.buttonsHideOnMobile);
					}
				},
				hideButtonsSlicer: function(buttons)
				{
					$.each(buttons, $.proxy(function(i, s)
					{
						var index = this.opts.buttons.indexOf(s);
						if (index !== -1)
						{
						    this.opts.buttons.splice(index, 1);
						}

					}, this));
				},
				load: function($toolbar)
				{
					this.button.buttons = [];

					$.each(this.opts.buttons, $.proxy(function(i, btnName)
					{
						if (!this.toolbarsButtons[btnName]
							|| (btnName === 'file' && !this.file.is())
							|| (btnName === 'image' && !this.image.is()))
						{
							return;
						}

						$toolbar.append($('<li>').append(this.button.build(btnName, this.toolbarsButtons[btnName])));

					}, this));
				},
				buildButtonTooltip: function($btn, title)
				{
    				if (this.opts.air || this.detect.isMobile())
    				{
        				return;
    				}

                    var $tooltip = $('<span>');
				    $tooltip.addClass('re-button-tooltip');
				    $tooltip.html(title);

                    $btn.append($tooltip);
                    $btn.on('mouseover', function()
                    {
                        if ($(this).hasClass('redactor-button-disabled'))
                        {
                            return;
                        }

                        $tooltip.show();
                        $tooltip.css('margin-left', -($tooltip.innerWidth()/2));

                    }).on('mouseout', function()
                    {
                        $tooltip.hide();
                    });
				},
				build: function(btnName, btnObject)
				{
					if (this.opts.toolbar === false)
					{
						return;
					}

                    var title = (typeof btnObject.label !== 'undefined') ? btnObject.label : btnObject.title;
					var $button = $('<a href="javascript:void(null);" alt="' + title + '" rel="' + btnName + '" />')

                    $button.addClass('re-button re-' + btnName);
					$button.attr({ 'role': 'button', 'aria-label': title, 'tabindex': '-1' });

                    if (typeof btnObject.icon !== 'undefined')
                    {
    					var $icon = $('<i>');
					    $icon.addClass('re-icon-' + btnName);

					    $button.append($icon);
					    $button.addClass('re-button-icon');

                        this.button.buildButtonTooltip($button, title);
					}
					else
					{
    					$button.html(btnObject.title);
					}

					// click
					if (btnObject.func || btnObject.command || btnObject.dropdown)
					{
						this.button.setEvent($button, btnName, btnObject);
					}

					// dropdown
					if (btnObject.dropdown)
					{
						$button.addClass('redactor-toolbar-link-dropdown').attr('aria-haspopup', true);

						var $dropdown = $('<ul class="redactor-dropdown redactor-dropdown-' + this.uuid + ' redactor-dropdown-box-' + btnName + '" style="display: none;">');
						$button.data('dropdown', $dropdown);
						this.dropdown.build(btnName, $dropdown, btnObject.dropdown);
					}

					this.button.buttons.push($button);

					return $button;
				},
				getButtons: function()
				{
					return this.button.toolbar().find('a.re-button');
				},
				getButtonsKeys: function()
				{
					return this.button.buttons;
				},
				setEvent: function($button, btnName, btnObject)
				{
					$button.on('mousedown', $.proxy(function(e)
					{
						e.preventDefault();

						if ($button.hasClass('redactor-button-disabled'))
						{
							return false;
						}

						var type = 'func';
						var callback = btnObject.func;

						if (btnObject.command)
						{
							type = 'command';
							callback = btnObject.command;
						}
						else if (btnObject.dropdown)
						{
							type = 'dropdown';
							callback = false;
						}

						this.button.toggle(e, btnName, type, callback);

						return false;

					}, this));
				},
				toggle: function(e, btnName, type, callback, args)
				{

					if (this.detect.isIe() || !this.detect.isDesktop())
					{
						this.utils.freezeScroll();
						e.returnValue = false;
					}

					if (type === 'command')
					{
						this.inline.format(callback);
					}
					else if (type === 'dropdown')
					{
						this.dropdown.show(e, btnName);
					}
					else
					{
						this.button.clickCallback(e, callback, btnName, args);
					}

					if (type !== 'dropdown')
					{
						this.dropdown.hideAll(false);
					}

					if (this.opts.air && type !== 'dropdown')
					{
						this.air.hide(e);
					}

					if (this.detect.isIe() || !this.detect.isDesktop())
					{
						this.utils.unfreezeScroll();
					}
				},
				clickCallback: function(e, callback, btnName, args)
				{
					var func;

					args = (typeof args === 'undefined') ? btnName : args;

					if ($.isFunction(callback))
					{
						callback.call(this, btnName);
					}
					else if (callback.search(/\./) !== '-1')
					{
						func = callback.split('.');
						if (typeof this[func[0]] === 'undefined')
						{
							return;
						}

						if (typeof args === 'object')
						{
							this[func[0]][func[1]].apply(this, args);
						}
						else
						{
							this[func[0]][func[1]].call(this, args);
						}
					}
					else
					{

						if (typeof args === 'object')
						{
							this[callback].apply(this, args);
						}
						else
						{
							this[callback].call(this, args);
						}
					}

					this.observe.buttons(e, btnName);

				},
				all: function()
				{
					return this.button.buttons;
				},
				get: function(key)
				{
					if (this.opts.toolbar === false)
					{
						return;
					}

					return this.button.toolbar().find('a.re-' + key);
				},
				set: function(key, title)
				{
					if (this.opts.toolbar === false)
					{
						return;
					}

					var $btn = this.button.toolbar().find('a.re-' + key);

					$btn.html(title).attr('aria-label', title);

					return $btn;
				},
				add: function(key, title)
				{
					if (this.button.isAdded(key) !== true)
					{
						return $();
					}

					var btn = this.button.build(key, { title: title });

					this.button.toolbar().append($('<li>').append(btn));

					return btn;
				},
				addFirst: function(key, title)
				{
					if (this.button.isAdded(key) !== true)
					{
						return $();
					}

					var btn = this.button.build(key, { title: title });

					this.button.toolbar().prepend($('<li>').append(btn));

					return btn;
				},
				addAfter: function(afterkey, key, title)
				{
					if (this.button.isAdded(key) !== true)
					{
						return $();
					}

					var btn = this.button.build(key, { title: title });
					var $btn = this.button.get(afterkey);

					if ($btn.length !== 0)
					{
						$btn.parent().after($('<li>').append(btn));
					}
					else
					{
						this.button.toolbar().append($('<li>').append(btn));
					}

					return btn;
				},
				addBefore: function(beforekey, key, title)
				{
					if (this.button.isAdded(key) !== true)
					{
						return $();
					}

					var btn = this.button.build(key, { title: title });
					var $btn = this.button.get(beforekey);

					if ($btn.length !== 0)
					{
						$btn.parent().before($('<li>').append(btn));
					}
					else
					{
						this.button.toolbar().append($('<li>').append(btn));
					}

					return btn;
				},
				isAdded: function(key)
				{
	                var index = this.opts.buttonsHideOnMobile.indexOf(key);
                    if (this.opts.toolbar === false || (index !== -1 && this.detect.isMobile()))
                    {
					    return false;
					}

					return true;
				},
				setIcon: function($btn, icon)
				{
					$btn.html(icon).addClass('re-button-icon');
					this.button.buildButtonTooltip($btn, $btn.attr('alt'));
				},
				changeIcon: function(key, newIconClass)
				{
                    var $btn = this.button.get(key);
                    if ($btn.length !== 0)
					{
    					$btn.find('i').removeAttr('class').addClass('re-icon-' + newIconClass);
    				}
				},
				addCallback: function($btn, callback)
				{
					if (typeof $btn === 'undefined' || this.opts.toolbar === false)
					{
						return;
					}

					var type = (callback === 'dropdown') ? 'dropdown' : 'func';
					var key = $btn.attr('rel');
					$btn.on('mousedown', $.proxy(function(e)
					{
						if ($btn.hasClass('redactor-button-disabled'))
						{
							return false;
						}

						this.button.toggle(e, key, type, callback);

					}, this));
				},
				addDropdown: function($btn, dropdown)
				{
					if (this.opts.toolbar === false)
					{
						return;
					}

					$btn.addClass('redactor-toolbar-link-dropdown').attr('aria-haspopup', true);

					var key = $btn.attr('rel');
					this.button.addCallback($btn, 'dropdown');

					var $dropdown = $('<div class="redactor-dropdown redactor-dropdown-' + this.uuid + ' redactor-dropdown-box-' + key + '" style="display: none;">');
					$btn.data('dropdown', $dropdown);

					// build dropdown
					if (dropdown)
					{
						this.dropdown.build(key, $dropdown, dropdown);
					}

					return $dropdown;
				},
				setActive: function(key)
				{
					this.button.get(key).addClass('redactor-act');
				},
				setInactive: function(key)
				{
					this.button.get(key).removeClass('redactor-act');
				},
				setInactiveAll: function(key)
				{
					var $btns = this.button.toolbar().find('a.re-button');

					if (typeof key !== 'undefined')
					{
						$btns = $btns.not('.re-' + key);
					}

					$btns.removeClass('redactor-act');
				},
				disable: function(key)
				{
					this.button.get(key).addClass('redactor-button-disabled');
				},
				enable: function(key)
				{
					this.button.get(key).removeClass('redactor-button-disabled');
				},
				disableAll: function(key)
				{
					var $btns = this.button.toolbar().find('a.re-button');
					if (typeof key !== 'undefined')
					{
						$btns = $btns.not('.re-' + key);
					}

					$btns.addClass('redactor-button-disabled');
				},
				enableAll: function()
				{
					this.button.toolbar().find('a.re-button').removeClass('redactor-button-disabled');
				},
				remove: function(key)
				{
					this.button.get(key).remove();
				}
			};
		},

		// =caret
		caret: function()
		{
			return {
				set: function(node1, node2, end)
				{
					this.core.editor().focus();

					end = (typeof end === 'undefined') ? 0 : 1;

					node1 = node1[0] || node1;
					node2 = node2[0] || node2;

					var sel = this.selection.get();
					var range = this.selection.range(sel);

					try
					{
						range.setStart(node1, 0);
						range.setEnd(node2, end);
					}
					catch (e) {}

					this.selection.update(sel, range);
				},
				prepare: function(node)
				{
					// firefox focus
					if (this.detect.isFirefox() && typeof this.start !== 'undefined')
					{
						this.core.editor().focus();
					}

					return node[0] || node;
				},
				start: function(node)
				{
					var sel, range;
					node = this.caret.prepare(node);

					if (!node)
					{
						return;
					}

					if (node.tagName === 'BR')
					{
						return this.caret.before(node);
					}

					var $first = $(node).children().first();

					// empty or inline tag
					var inline = this.utils.isInlineTag(node.tagName);
					if (node.innerHTML === '' || inline)
					{
                        this.caret.setStartEmptyOrInline(node, inline);
					}
					// empty inline inside
                    else if ($first && $first.length !== 0 && this.utils.isInlineTag($first[0].tagName) && $first.text() === '')
                    {
                       this.caret.setStartEmptyOrInline($first[0], true);
                    }
                    // block tag
					else
					{
                        sel = window.getSelection();
                        sel.removeAllRanges();

                        range = document.createRange();
                        range.selectNodeContents(node);
                        range.collapse(true);
                        sel.addRange(range);
					}


				},
				setStartEmptyOrInline: function(node, inline)
				{
                    var sel = window.getSelection();
				    var range = document.createRange();
					var textNode = document.createTextNode('\u200B');

					range.setStart(node, 0);
					range.insertNode(textNode);
					range.setStartAfter(textNode);
					range.collapse(true);

					sel.removeAllRanges();
					sel.addRange(range);

					// remove invisible text node
					if (!inline)
					{
						this.core.editor().on('keydown.redactor-remove-textnode', function()
						{
							$(textNode).remove();
							$(this).off('keydown.redactor-remove-textnode');
						});
					}
				},
				end: function(node)
				{
					var sel, range;
					node = this.caret.prepare(node);

					if (!node)
					{
						return;
					}

					// empty node
					if (node.tagName !== 'BR' && node.innerHTML === '')
					{
						return this.caret.start(node);
					}

					// br
					if (node.tagName === 'BR')
					{
						var space = document.createElement('span');
						space.className = 'redactor-invisible-space';
						space.innerHTML = '&#x200b;';

						$(node).after(space);

						sel = window.getSelection();
						sel.removeAllRanges();

						range = document.createRange();

						range.setStartBefore(space);
						range.setEndBefore(space);
						sel.addRange(range);

						$(space).replaceWith(function()
						{
							return $(this).contents();
						});

						return;
					}

					if (node.lastChild && node.lastChild.nodeType === 1)
					{
						return this.caret.after(node.lastChild);
					}

					sel = window.getSelection();
					sel.removeAllRanges();

					range = document.createRange();
					range.selectNodeContents(node);
					range.collapse(false);
					sel.addRange(range);
				},
				after: function(node)
				{
					var sel, range;
					node = this.caret.prepare(node);


					if (!node)
					{
						return;
					}

					if (node.tagName === 'BR')
					{
						return this.caret.end(node);
					}

					// block tag
					if (this.utils.isBlockTag(node.tagName))
					{
						var next = this.caret.next(node);

						if (typeof next === 'undefined')
						{
							this.caret.end(node);
						}
						else
						{
							// table
							if (next.tagName === 'TABLE')
							{
								next = $(next).find('th, td').first()[0];
							}
							// list
							else if (next.tagName === 'UL' || next.tagName === 'OL')
							{
								next = $(next).find('li').first()[0];
							}

							this.caret.start(next);
						}

						return;
					}

					// inline tag
					var textNode = document.createTextNode('\u200B');

					sel = window.getSelection();
					sel.removeAllRanges();

					range = document.createRange();
					range.setStartAfter(node);
					range.insertNode(textNode);
					range.setStartAfter(textNode);
					range.collapse(true);

					sel.addRange(range);

				},
				before: function(node)
				{
					var sel, range;
					node = this.caret.prepare(node);


					if (!node)
					{
						return;
					}

					// block tag
					if (this.utils.isBlockTag(node.tagName))
					{
						var prev = this.caret.prev(node);

						if (typeof prev === 'undefined')
						{
							this.caret.start(node);
						}
						else
						{
							// table
							if (prev.tagName === 'TABLE')
							{
								prev = $(prev).find('th, td').last()[0];
							}
							// list
							else if (prev.tagName === 'UL' || prev.tagName === 'OL')
							{
								prev = $(prev).find('li').last()[0];
							}

							this.caret.end(prev);
						}

						return;
					}

					// inline tag
					sel = window.getSelection();
					sel.removeAllRanges();

					range = document.createRange();

			        range.setStartBefore(node);
			        range.collapse(true);

			        sel.addRange(range);
				},
				next: function(node)
				{
					var $next = $(node).next();
					if ($next.hasClass('redactor-script-tag, redactor-selection-marker'))
					{
						return $next.next()[0];
					}
					else
					{
						return $next[0];
					}
				},
				prev: function(node)
				{
					var $prev = $(node).prev();
					if ($prev.hasClass('redactor-script-tag, redactor-selection-marker'))
					{
						return $prev.prev()[0];
					}
					else
					{
						return $prev[0];
					}
				},

				// #backward
				offset: function(node)
				{
					return this.offset.get(node);
				}

			};
		},

		// =clean
		clean: function()
		{
			return {
				onSet: function(html)
				{
					html = this.clean.savePreCode(html);
					html = this.clean.saveFormTags(html);

					// convert script tag
					if (this.opts.script)
					{
						html = html.replace(/<script(.*?[^>]?)>([\w\W]*?)<\/script>/gi, '<pre class="redactor-script-tag" $1>$2</pre>');
					}

					// converting entity
					html = html.replace(/\$/g, '&#36;');
					html = html.replace(/&amp;/g, '&');

					// replace special characters in links
					html = html.replace(/<a href="(.*?[^>]?)®(.*?[^>]?)">/gi, '<a href="$1&reg$2">');

					// save markers
					html = html.replace(/<span id="selection-marker-1"(.*?[^>]?)>​<\/span>/gi, '###marker1###');
					html = html.replace(/<span id="selection-marker-2"(.*?[^>]?)>​<\/span>/gi, '###marker2###');

					// replace tags
					var self = this;
					var $div = $("<div/>").html($.parseHTML(html, document, true));

					var replacement = this.opts.replaceTags;
					if (replacement)
					{
                        var keys = Object.keys(this.opts.replaceTags);
    					$div.find(keys.join(',')).each(function(i,s)
    					{
    						self.utils.replaceToTag(s, replacement[s.tagName.toLowerCase()]);
    					});
					}

					// add span marker
					$div.find('span, a').attr('data-redactor-span', true).each(function()
					{
    					// add style cache
    					var $el = $(this);

    					if ($el.attr('style'))
    					{
        					$el.attr('data-redactor-style-cache', $el.attr('style'));
    					}
					});

					html = $div.html();

					// remove tags
					var tags = ['font', 'html', 'head', 'link', 'body', 'meta', 'applet'];
					if (!this.opts.script)
					{
						tags.push('script');
					}

					html = this.clean.stripTags(html, tags);

					// remove html comments
					if (this.opts.removeComments)
					{
					    html = html.replace(/<!--[\s\S]*?-->/gi, '');
					}

					// paragraphize
					html = this.paragraphize.load(html);

					// restore markers
					html = html.replace('###marker1###', '<span id="selection-marker-1" class="redactor-selection-marker">​</span>');
					html = html.replace('###marker2###', '<span id="selection-marker-2" class="redactor-selection-marker">​</span>');

					// empty
					if (html.search(/^(||\s||<br\s?\/?>||&nbsp;)$/i) !== -1)
					{
						return this.opts.emptyHtml;
					}

					return html;
				},
				onGet: function(html)
				{
					return this.clean.onSync(html);
				},
				onSync: function(html)
				{
					// remove invisible spaces
					html = html.replace(/\u200B/g, '');
					html = html.replace(/&#x200b;/gi, '');
					//html = html.replace(/&nbsp;&nbsp;/gi, '&nbsp;');

					if (html.search(/^<p>(||\s||<br\s?\/?>||&nbsp;)<\/p>$/i) !== -1)
					{
						return '';
					}

					// remove image resize
					html = html.replace(/<span(.*?)id="redactor-image-box"(.*?[^>])>([\w\W]*?)<img(.*?)><\/span>/gi, '$3<img$4>');
					html = html.replace(/<span(.*?)id="redactor-image-resizer"(.*?[^>])>(.*?)<\/span>/gi, '');
					html = html.replace(/<span(.*?)id="redactor-image-editter"(.*?[^>])>(.*?)<\/span>/gi, '');
					html = html.replace(/<img(.*?)style="(.*?)opacity: 0\.5;(.*?)"(.*?)>/gi, '<img$1style="$2$3"$4>');

					var $div = $("<div/>").html($.parseHTML(html, document, true));

					// remove empty atributes
					$div.find('*[style=""]').removeAttr('style');
					$div.find('*[class=""]').removeAttr('class');
					$div.find('*[rel=""]').removeAttr('rel');

					// remove markers
					$div.find('.redactor-invisible-space, .redactor-unlink').each(function()
					{
						$(this).contents().unwrap();
					});

					// remove span without attributes & span marker
				    $div.find('span, a').removeAttr('data-redactor-span data-redactor-style-cache').each(function()
					{
    					if (this.attributes.length === 0)
    					{
						    $(this).contents().unwrap();
						}
					});

					// remove rel attribute from img
					$div.find('img').removeAttr('rel');

					$div.find('.redactor-selection-marker, #redactor-insert-marker').remove();

					html = $div.html();

					// reconvert script tag
					if (this.opts.script)
					{
						html = html.replace(/<pre class="redactor-script-tag"(.*?[^>]?)>([\w\W]*?)<\/pre>/gi, '<script$1>$2</script>');
					}

					// restore form tag
					html = this.clean.restoreFormTags(html);

					// remove br in|of li/header tags
					html = html.replace(new RegExp('<br\\s?/?></h', 'gi'), '</h');
					html = html.replace(new RegExp('<br\\s?/?></li>', 'gi'), '</li>');
					html = html.replace(new RegExp('</li><br\\s?/?>', 'gi'), '</li>');

					// pre class
					html = html.replace(/<pre>/gi, "<pre>\n");
					if (this.opts.preClass)
					{
						html = html.replace(/<pre>/gi, '<pre class="' + this.opts.preClass + '">');
					}

					// link nofollow
					if (this.opts.linkNofollow)
					{
						html = html.replace(/<a(.*?)rel="nofollow"(.*?[^>])>/gi, '<a$1$2>');
						html = html.replace(/<a(.*?[^>])>/gi, '<a$1 rel="nofollow">');
					}

					// replace special characters
					var chars = {
						'\u2122': '&trade;',
						'\u00a9': '&copy;',
						'\u2026': '&hellip;',
						'\u2014': '&mdash;',
						'\u2010': '&dash;'
					};

					$.each(chars, function(i,s)
					{
						html = html.replace(new RegExp(i, 'g'), s);
					});

					html = html.replace(/&amp;/g, '&');

					// remove empty paragpraphs
					html = html.replace(/<p><\/p>/gi, "");

					// remove new lines
                    html = html.replace(/\n{2,}/g, "\n");

                    // remove all newlines
                    if (this.opts.removeNewlines)
                    {
                        html = html.replace(/\r?\n/g, "");
                    }

					return html;
				},
				onPaste: function(html, data, insert)
				{
					// if paste event
					if (insert !== true)
					{
    					// remove google docs markers
                        html = html.replace(/<b\sid="internal-source-marker(.*?)">([\w\W]*?)<\/b>/gi, "$2");
    					html = html.replace(/<b(.*?)id="docs-internal-guid(.*?)">([\w\W]*?)<\/b>/gi, "$3");

                        // google docs styles
                        html = html.replace(/<span[^>]*(font-style: italic; font-weight: bold|font-weight: bold; font-style: italic)[^>]*>([\w\W]*?)<\/span>/gi, '<b><i>$2</i></b>');
                        html = html.replace(/<span[^>]*(font-style: italic; font-weight: 700|font-weight: 700; font-style: italic)[^>]*>([\w\W]*?)<\/span>/gi, '<b><i>$2</i></b>');
                        html = html.replace(/<span[^>]*font-style: italic[^>]*>([\w\W]*?)<\/span>/gi, '<i>$1</i>');
                        html = html.replace(/<span[^>]*font-weight: bold[^>]*>([\w\W]*?)<\/span>/gi, '<b>$1</b>');
                        html = html.replace(/<span[^>]*font-weight: 700[^>]*>([\w\W]*?)<\/span>/gi, '<b>$1</b>');

						var msword = this.clean.isHtmlMsWord(html);
						if (msword)
						{
							html = this.clean.cleanMsWord(html);
						}
					}

					html = $.trim(html);

					if (data.pre)
					{
						if (this.opts.preSpaces)
						{
							html = html.replace(/\t/g, new Array(this.opts.preSpaces + 1).join(' '));
						}
					}
					else
					{
						html = this.clean.replaceBrToNl(html);
						html = this.clean.removeTagsInsidePre(html);
					}

					// if paste event
					if (insert !== true)
					{
						html = this.clean.removeEmptyInlineTags(html);

						if (data.encode === false)
						{
							html = html.replace(/&/g, '&amp;');
							html = this.clean.convertTags(html, data);
							html = this.clean.getPlainText(html);
							html = this.clean.reconvertTags(html, data);
						}

					}

					if (data.text)
					{
						html = this.clean.replaceNbspToSpaces(html);
						html = this.clean.getPlainText(html);
					}

					if (data.lists)
					{
    					html = html.replace("\n", '<br>');
    				}

					if (data.encode)
					{
						html = this.clean.encodeHtml(html);
					}

					if (data.paragraphize)
					{

						html = this.paragraphize.load(html);
					}

					return html;

				},
				getCurrentType: function(html, insert)
				{
					var blocks = this.selection.blocks();

					var data = {
						text: false,
						encode: false,
						paragraphize: true,
						line: this.clean.isHtmlLine(html),
						blocks: this.clean.isHtmlBlocked(html),
						pre: false,
						lists: false,
						block: true,
						inline: true,
						links: true,
						images: true
					};

					if (blocks.length === 1 && this.utils.isCurrentOrParent(['h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'a', 'figcaption']))
					{
						data.text = true;
						data.paragraphize = false;
						data.inline = false;
						data.images = false;
						data.links = false;
						data.line = true;
					}
					else if (this.opts.type === 'inline' || this.opts.enterKey === false)
					{
						data.paragraphize = false;
						data.block = false;
						data.line = true;
					}
					else if (blocks.length === 1 && this.utils.isCurrentOrParent(['li']))
					{
						data.lists = true;
						data.block = false;
						data.paragraphize = false;
						data.images = false;
					}
					else if (blocks.length === 1 && this.utils.isCurrentOrParent(['th', 'td', 'blockquote']))
					{
						data.block = false;
						data.paragraphize = false;

					}
					else if (this.opts.type === 'pre' || (blocks.length === 1 && this.utils.isCurrentOrParent('pre')))
					{
						data.inline = false;
						data.block = false;
						data.encode = true;
						data.pre = true;
						data.paragraphize = false;
						data.images = false;
						data.links = false;
					}

					if (data.line === true)
					{
						data.paragraphize = false;
					}

					if (insert === true)
					{
						data.text = false;
					}

					return data;

				},
				isHtmlBlocked: function(html)
				{
					var match1 = html.match(new RegExp('</(' + this.opts.blockTags.join('|' ).toUpperCase() + ')>', 'gi'));
					var match2 = html.match(new RegExp('<hr(.*?[^>])>', 'gi'));

					return (match1 === null && match2 === null) ? false : true;
				},
				isHtmlLine: function(html)
				{
					if (this.clean.isHtmlBlocked(html))
					{
						return false;
					}

					var matchBR = html.match(/<br\s?\/?>/gi);
					var matchNL = html.match(/\n/gi);

					return (!matchBR && !matchNL) ? true : false;
				},
				isHtmlMsWord: function(html)
				{
					return html.match(/class="?Mso|style="[^"]*\bmso-|style='[^'']*\bmso-|w:WordDocument/i);
				},
				removeEmptyInlineTags: function(html)
				{
					var tags = this.opts.inlineTags;
    				var $div = $("<div/>").html($.parseHTML(html, document, true));
                    var self = this;

					var $spans = $div.find('span');
					var $tags = $div.find(tags.join(','));

					$tags.removeAttr('style');

					$tags.each(function()
					{
    					var tagHtml = $(this).html();
    					if (this.attributes.length === 0 && self.utils.isEmpty(tagHtml))
    					{
        					$(this).replaceWith(function()
        					{
        						return $(this).contents();
        					});
    					}
					});

                    $spans.each(function()
					{
    					var tagHtml = $(this).html();
    					if (this.attributes.length === 0)
    					{
        					$(this).replaceWith(function()
        					{
        						return $(this).contents();
        					});
    					}
					});

					html = $div.html();

					$div.remove();

					return html;
				},
				cleanMsWord: function(html)
				{
    				html = html.replace(/<!--[\s\S]*?-->/g, "");
    				html = html.replace(/<o:p>[\s\S]*?<\/o:p>/gi, '');
					html = html.replace(/\n/g, " ");
					html = html.replace(/<br\s?\/?>|<\/p>|<\/div>|<\/li>|<\/td>/gi, '\n\n');

					// lists
					var $div = $("<div/>").html(html);

					var lastList = false;
					var lastLevel = 1;
					var listsIds = [];

					$div.find("p[style]").each(function()
					{
						var matches = $(this).attr('style').match(/mso\-list\:l([0-9]+)\slevel([0-9]+)/);

						if (matches)
						{
							var currentList = parseInt(matches[1]);
							var currentLevel = parseInt(matches[2]);
							var listType = $(this).html().match(/^[\w]+\./) ? "ol" : "ul";

							var $li = $("<li/>").html($(this).html());

							$li.html($li.html().replace(/^([\w\.]+)</, '<'));
							$li.find("span:first").remove();

							if (currentLevel == 1 && $.inArray(currentList, listsIds) == -1)
							{
								var $list = $("<" + listType + "/>").attr({"data-level": currentLevel, "data-list": currentList}).html($li);
								$(this).replaceWith($list);

								lastList = currentList;
								listsIds.push(currentList);
							}
							else
							{
								if (currentLevel > lastLevel)
								{
									var $prevList = $div.find('[data-level="' + lastLevel + '"][data-list="' + lastList + '"]');
									var $lastList = $prevList;

									for(var i = lastLevel; i < currentLevel; i++)
									{
										$list = $("<" + listType + "/>");
										$list.appendTo($lastList.find("li").last());

										$lastList = $list;
									}

									$lastList.attr({"data-level": currentLevel, "data-list": currentList}).html($li);

								}
								else
								{
									var $prevList = $div.find('[data-level="' + currentLevel + '"][data-list="' + currentList + '"]').last();

									$prevList.append($li);
								}

								lastLevel = currentLevel;
								lastList = currentList;

								$(this).remove();
							}
						}
					});

					$div.find('[data-level][data-list]').removeAttr('data-level data-list');
					html = $div.html();

					return html;
				},
				replaceNbspToSpaces: function(html)
				{
					return html.replace('&nbsp;', ' ');
				},
				replaceBrToNl: function(html)
				{
					return html.replace(/<br\s?\/?>/gi, '\n');
				},
				replaceNlToBr: function(html)
				{
					return html.replace(/\n/g, '<br />');
				},
				convertTags: function(html, data)
				{
                    var $div = $('<div>').html(html);

                    // remove iframe
					$div.find('iframe').remove();

					// link target & attrs
					var $links = $div.find('a');
					$links.removeAttr('style');
					if (this.opts.pasteLinkTarget !== false)
					{
    					$links.attr('target', this.opts.pasteLinkTarget);
					}

                    // links
                    if (data.links && this.opts.pasteLinks)
                    {
                    	$div.find('a').each(function(i, link)
                    	{
                    		if (link.href)
                    		{
                    			var tmp = '##%a href="' + link.href + '"';
                    			var attr;
                    			for (var j = 0, length = link.attributes.length; j < length; j++)
                    			{
                    				attr = link.attributes.item(j);
                    				if (attr.name !== 'href')
                    				{
                    					tmp += ' ' + attr.name + '="' + attr.value + '"';
                    				}
                    			}

                    			link.outerHTML = tmp + '%##' + link.innerHTML + '##%/a%##';
                    		}
                    	});
                    }

                    html = $div.html();

                    // images
					if (data.images && this.opts.pasteImages)
					{
						html = html.replace(/<img(.*?)src="(.*?)"(.*?[^>])>/gi, '##%img$1src="$2"$3%##');
					}

					// plain text
					if (this.opts.pastePlainText)
					{
						return html;
					}

					// all tags
					var blockTags = (data.lists) ? ['ul', 'ol', 'li'] : this.opts.pasteBlockTags;

					var tags;
					if (data.block || data.lists)
					{
						tags = (data.inline) ? blockTags.concat(this.opts.pasteInlineTags) : blockTags;
					}
					else
					{
						tags = (data.inline) ? this.opts.pasteInlineTags : [];
					}

					var len = tags.length;
					for (var i = 0; i < len; i++)
					{
						html = html.replace(new RegExp('<\/' + tags[i] + '>', 'gi'), '###/' + tags[i] + '###');

						if (tags[i] === 'td' || tags[i] === 'th')
						{
							html = html.replace(new RegExp('<' + tags[i] + '(.*?[^>])((colspan|rowspan)="(.*?[^>])")?(.*?[^>])>', 'gi'), '###' + tags[i] + ' $2###');
						}
						else if (tags[i] === 'span')
						{
    						html = html.replace(new RegExp('<' + tags[i] + '([^>]*)class="([^>]*)"[^>]*>', 'gi'), '###' + tags[i] + ' class="$2"###');
                            html = html.replace(new RegExp('<' + tags[i] + '([^>]*)data-redactor-style-cache="([^>]*)"[^>]*>', 'gi'), '###' + tags[i] + ' cache="$2"###');
						}
						else
						{
							html = html.replace(new RegExp('<' + tags[i] + '[^>]*>', 'gi'), '###' + tags[i] + '###');
						}
					}

					return html;

				},
				reconvertTags: function(html, data)
				{
					// links & images
					if ((data.links && this.opts.pasteLinks) || (data.images && this.opts.pasteImages))
					{
						html = html.replace(new RegExp('##%', 'gi'), '<');
						html = html.replace(new RegExp('%##', 'gi'), '>');
                    }

					// plain text
					if (this.opts.pastePlainText)
					{
						return html;
					}

					var blockTags = (data.lists) ? ['ul', 'ol', 'li'] : this.opts.pasteBlockTags;

					var tags;
					if (data.block || data.lists)
					{
						tags = (data.inline) ? blockTags.concat(this.opts.pasteInlineTags) : blockTags;
					}
					else
					{
						tags = (data.inline) ? this.opts.pasteInlineTags : [];
					}

					var len = tags.length;
					for (var i = 0; i < len; i++)
					{
						html = html.replace(new RegExp('###\/' + tags[i] + '###', 'gi'), '</' + tags[i] + '>');
                    }

                    for (var i = 0; i < len; i++)
					{
    					html = html.replace(new RegExp('###' + tags[i] + '###', 'gi'), '<' + tags[i] + '>');
    				}

					for (var i = 0; i < len; i++)
					{
                        if (tags[i] === 'td' || tags[i] === 'th')
                        {
						    html = html.replace(new RegExp('###' + tags[i] + '\s?(.*?[^#])###', 'gi'), '<' + tags[i] + '$1>');
                        }
                        else if (tags[i] === 'span')
                        {
                            html = html.replace(new RegExp('###' + tags[i] + ' cache="(.*?[^#])"###', 'gi'), '<' + tags[i] + ' style="$1" data-redactor-span="true" data-redactor-style-cache="$1">');
                            html = html.replace(new RegExp('###' + tags[i] + '\s?(.*?[^#])###', 'gi'), '<' + tags[i] + '$1>');
                        }
                    }

					return html;

				},
				cleanPre: function(block)
				{
					block = (typeof block === 'undefined') ? $(this.selection.block()).closest('pre', this.core.editor()[0]) : block;

					$(block).find('br').replaceWith(function()
					{
						return document.createTextNode('\n');
					});

					$(block).find('p').replaceWith(function()
					{
						return $(this).contents();
					});

				},
				removeTagsInsidePre: function(html)
				{
					var $div = $('<div />').append(html);
					$div.find('pre').replaceWith(function()
					{
						var str = $(this).html();
						str = str.replace(/<br\s?\/?>|<\/p>|<\/div>|<\/li>|<\/td>/gi, '\n');
						str = str.replace(/(<([^>]+)>)/gi, '');

						return $('<pre />').append(str);
					});

					html = $div.html();
					$div.remove();

					return html;

				},
				getPlainText: function(html)
				{
					html = html.replace(/<!--[\s\S]*?-->/gi, '');
					html = html.replace(/<style[\s\S]*?style>/gi, '');
					html = html.replace(/<\/p>|<\/div>|<\/li>|<\/td>/gi, '\n');
					html = html.replace(/<\/H[1-6]>/gi, '\n\n');

					var tmp = document.createElement('div');
					tmp.innerHTML = html;
					html = tmp.textContent || tmp.innerText;

					return $.trim(html);
				},
				savePreCode: function(html)
				{
					html = this.clean.savePreFormatting(html);
					html = this.clean.saveCodeFormatting(html);
					html = this.clean.restoreSelectionMarkers(html);

					return html;
				},
				savePreFormatting: function(html)
				{
					var pre = html.match(/<pre(.*?)>([\w\W]*?)<\/pre>/gi);
					if (pre === null)
					{
						return html;
					}

					$.each(pre, $.proxy(function(i,s)
					{
    					var arr = [];
    					var codeTag = false;
    					var contents, attr1, attr2;

    					if (s.match(/<pre(.*?)>(([\n\r\s]+)?)<code(.*?)>/i))
    					{

        					arr = s.match(/<pre(.*?)>(([\n\r\s]+)?)<code(.*?)>([\w\W]*?)<\/code><\/pre>/i);
        					codeTag = true;

                            contents = arr[5];
                            attr1 = arr[1];
                            attr2 = arr[4];
    					}
                        else
						{
    						arr = s.match(/<pre(.*?)>([\w\W]*?)<\/pre>/i);

                            contents = arr[2];
                            attr1 = arr[1];
                        }

						contents = contents.replace(/<br\s?\/?>/g, '\n');
						contents = contents.replace(/&nbsp;/g, ' ');

						if (this.opts.preSpaces)
						{
							contents = contents.replace(/\t/g, new Array(this.opts.preSpaces + 1).join(' '));
						}

                        contents = this.clean.encodeEntities(contents);

						// $ fix
						contents = contents.replace(/\$/g, '&#36;');

                        if (codeTag)
                        {
                            html = html.replace(s, '<pre' + attr1 + '><code' + attr2 + '>' + contents + '</code></pre>');
                        }
                        else
                        {
                            html = html.replace(s, '<pre' + attr1 + '>' + contents + '</pre>');
                        }


					}, this));

					return html;
				},
				saveCodeFormatting: function(html)
				{
					var code = html.match(/<code(.*?)>([\w\W]*?)<\/code>/gi);
					if (code === null)
					{
						return html;
					}

					$.each(code, $.proxy(function(i,s)
					{
						var arr = s.match(/<code(.*?)>([\w\W]*?)<\/code>/i);

						arr[2] = arr[2].replace(/&nbsp;/g, ' ');
						arr[2] = this.clean.encodeEntities(arr[2]);
						arr[2] = arr[2].replace(/\$/g, '&#36;');

						html = html.replace(s, '<code' + arr[1] + '>' + arr[2] + '</code>');

					}, this));

					return html;
				},
				restoreSelectionMarkers: function(html)
				{
					html = html.replace(/&lt;span id=&quot;selection-marker-([0-9])&quot; class=&quot;redactor-selection-marker&quot;&gt;​&lt;\/span&gt;/g, '<span id="selection-marker-$1" class="redactor-selection-marker">​</span>');

					return html;
				},
				saveFormTags: function(html)
				{
					return html.replace(/<form(.*?)>([\w\W]*?)<\/form>/gi, '<section$1 rel="redactor-form-tag">$2</section>');
				},
				restoreFormTags: function(html)
				{
					return html.replace(/<section(.*?) rel="redactor-form-tag"(.*?)>([\w\W]*?)<\/section>/gi, '<form$1$2>$3</form>');
				},
				encodeHtml: function(html)
				{
					html = html.replace(/”/g, '"');
					html = html.replace(/“/g, '"');
					html = html.replace(/‘/g, '\'');
					html = html.replace(/’/g, '\'');
					html = this.clean.encodeEntities(html);

					return html;
				},
				encodeEntities: function(str)
				{
					str = String(str).replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&quot;/g, '"');
					str = str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');

					return str;
				},
				stripTags: function(input, denied)
				{
					if (typeof denied === 'undefined')
					{
						return input.replace(/(<([^>]+)>)/gi, '');
					}

				    var tags = /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi;

				    return input.replace(tags, function ($0, $1)
				    {
				        return denied.indexOf($1.toLowerCase()) === -1 ? $0 : '';
				    });
				},
				removeMarkers: function(html)
				{
					return html.replace(/<span(.*?[^>]?)class="redactor-selection-marker"(.*?[^>]?)>([\w\W]*?)<\/span>/gi, '');
				},
				removeSpaces: function(html)
				{
					html = $.trim(html);
					html = html.replace(/\n/g, '');
					html = html.replace(/[\t]*/g, '');
					html = html.replace(/\n\s*\n/g, "\n");
					html = html.replace(/^[\s\n]*/g, ' ');
					html = html.replace(/[\s\n]*$/g, ' ');
					html = html.replace( />\s{2,}</g, '> <'); // between inline tags can be only one space
					html = html.replace(/\n\n/g, "\n");
					html = html.replace(/\u200B/g, '');

					return html;
				},
				removeSpacesHard: function(html)
				{
					html = $.trim(html);
					html = html.replace(/\n/g, '');
					html = html.replace(/[\t]*/g, '');
					html = html.replace(/\n\s*\n/g, "\n");
					html = html.replace(/^[\s\n]*/g, '');
					html = html.replace(/[\s\n]*$/g, '');
					html = html.replace( />\s{2,}</g, '><');
					html = html.replace(/\n\n/g, "\n");
					html = html.replace(/\u200B/g, '');

					return html;
				},
				normalizeCurrentHeading: function()
				{
					var heading = this.selection.block();
					if (this.utils.isCurrentOrParentHeader() && heading)
					{
						heading.normalize();
					}
				}
			};
		},

		// =code
		code: function()
		{
			return {
				syncFire: true,
				html: false,
				start: function(html)
				{
					html = $.trim(html);
					html = html.replace(/^(<span id="selection-marker-1" class="redactor-selection-marker">​<\/span>)/, '');

					// clean
					if (this.opts.type === 'textarea')
					{
						html = this.clean.onSet(html);
					}
					else if (this.opts.type === 'div' && html === '')
					{
						html = this.opts.emptyHtml;
					}

					html = html.replace(/<p><span id="selection-marker-1" class="redactor-selection-marker">​<\/span><\/p>/, '');

					this.events.stopDetectChanges();
					this.core.editor().html(html);
					this.observe.load();
					this.events.startDetectChanges();
				},
				set: function(html, options)
				{
					html = $.trim(html);

                    options = options || {};

                    // start
                    if (options.start)
                    {
                        this.start = options.start;
                    }

					// clean
					if (this.opts.type === 'textarea')
					{
						html = this.clean.onSet(html);
					}
					else if (this.opts.type === 'div' && html === '')
					{
						html = this.opts.emptyHtml;
					}

					this.core.editor().html(html);

					if (this.opts.type === 'textarea')
					{
    					this.code.sync();
					}

					this.placeholder.enable();
				},
				get: function()
				{
					if (this.opts.type === 'textarea')
					{
						return this.core.textarea().val();
                    }
					else
					{
						var html = this.core.editor().html();

						// clean
						html = this.clean.onGet(html);

						return html;
					}
				},
				sync: function()
				{
					if (!this.code.syncFire)
					{
						return;
					}

					var html = this.core.editor().html();
					var htmlCleaned = this.code.cleaned(html);

					// is there a need to synchronize
					if (this.code.isSync(htmlCleaned))
					{
						// do not sync
						return;
					}

					// save code
					this.code.html = htmlCleaned;

					if (this.opts.type !== 'textarea')
					{
						this.core.callback('sync', html);
						this.core.callback('change', html);
						return;
					}

					if (this.opts.type === 'textarea')
					{
						setTimeout($.proxy(function()
						{
							this.code.startSync(html);

						}, this), 10);
					}
				},
				startSync: function(html)
				{
					// before clean callback
					html = this.core.callback('syncBefore', html);

					// clean
					html = this.clean.onSync(html);

					// set code
					this.core.textarea().val(html);

					// after sync callback
					this.core.callback('sync', html);

					// change callback
					if (this.start === false)
					{
						this.core.callback('change', html);
					}

					this.start = false;
				},
				isSync: function(htmlCleaned)
				{
					var html = (this.code.html !== false) ? this.code.html : false;

					return (html !== false && html === htmlCleaned);
				},
				cleaned: function(html)
				{
					html = html.replace(/\u200B/g, '');
					return this.clean.removeMarkers(html);
				}
			};
		},

		// =core
		core: function()
		{
			return {

				id: function()
				{
					return this.$editor.attr('id');
				},
				element: function()
				{
					return this.$element;
				},
				editor: function()
				{
					return (typeof this.$editor === 'undefined') ? $() : this.$editor;
				},
				textarea: function()
				{
					return this.$textarea;
				},
				box: function()
				{
					return (this.opts.type === 'textarea') ? this.$box : this.$element;
				},
				toolbar: function()
				{
					return (this.$toolbar) ? this.$toolbar : false;
				},
				air: function()
				{
					return (this.$air) ? this.$air : false;
				},
				object: function()
				{
					return $.extend({}, this);
				},
				structure: function()
				{
					this.core.editor().toggleClass('redactor-structure');
				},
				addEvent: function(name)
				{
					this.core.event = name;
				},
				getEvent: function()
				{
					return this.core.event;
				},
				callback: function(type, e, data)
				{
					var eventNamespace = 'redactor';
					var returnValue = false;
					var events = $._data(this.core.element()[0], 'events');

					// on callback
					if (typeof events !== 'undefined' && typeof events[type] !== 'undefined')
					{
						var len = events[type].length;
						for (var i = 0; i < len; i++)
						{
							var namespace = events[type][i].namespace;
							if (namespace === 'callback.' + eventNamespace)
							{
								var handler = events[type][i].handler;
								var args = (typeof data === 'undefined') ? [e] : [e, data];
								returnValue = (typeof args === 'undefined') ? handler.call(this, e) : handler.call(this, e, args);
							}
						}
					}

					if (returnValue)
					{
						return returnValue;
					}

					// no callback
					if (typeof this.opts.callbacks[type] === 'undefined')
					{
						return (typeof data === 'undefined') ? e : data;
					}

					// callback
					var callback = this.opts.callbacks[type];

					if ($.isFunction(callback))
					{
						return (typeof data === 'undefined') ? callback.call(this, e) : callback.call(this, e, data);
					}
					else
					{
						return (typeof data === 'undefined') ? e : data;
					}
				},
				destroy: function()
				{
					this.opts.destroyed = true;

					this.core.callback('destroy');

					// placeholder
					this.placeholder.destroy();

					// progress
					this.progress.destroy();

					// help label
					$('#redactor-voice-' + this.uuid).remove();

					this.core.editor().removeClass('redactor-in redactor-styles redactor-structure redactor-layer-img-edit');

					// caret service
					this.core.editor().off('keydown.redactor-remove-textnode');

					// observer
					this.core.editor().off('.redactor-observe.' + this.uuid);

					// off events and remove data
					this.$element.off('.redactor').removeData('redactor');
					this.core.editor().off('.redactor');

					$(document).off('.redactor-dropdown');
					$(document).off('.redactor-air.' + this.uuid);
					$(document).off('mousedown.redactor-blur.' + this.uuid);
					$(document).off('mousedown.redactor.' + this.uuid);
					$(document).off('touchstart.redactor.' + this.uuid + ' click.redactor.' + this.uuid);
					$(window).off('.redactor-toolbar.' + this.uuid);
					$(window).off('touchmove.redactor.' + this.uuid);
					$("body").off('scroll.redactor.' + this.uuid);

					$(this.opts.toolbarFixedTarget).off('scroll.redactor.' + this.uuid);

					// plugins events
					var self = this;
					if (this.opts.plugins !== false)
					{
						$.each(this.opts.plugins, function(i,s)
						{
							$(window).off('.redactor-plugin-' + s);
							$(document).off('.redactor-plugin-' + s);
							$("body").off('.redactor-plugin-' + s);
							self.core.editor().off('.redactor-plugin-' + s);
						});
					}

					// click to edit
					this.$element.off('click.redactor-click-to-edit');
					this.$element.removeClass('redactor-click-to-edit');

					// common
					this.core.editor().removeClass('redactor-layer');
					this.core.editor().removeAttr('contenteditable');

					var html = this.code.get();

					if (this.opts.toolbar && this.$toolbar)
					{
						// dropdowns off
						this.$toolbar.find('a').each(function()
						{
							var $el = $(this);
							if ($el.data('dropdown'))
							{
								$el.data('dropdown').remove();
								$el.data('dropdown', {});
							}
						});
					}

					if (this.opts.type === 'textarea')
					{
						this.$box.after(this.$element);
						this.$box.remove();
						this.$element.val(html).show();
					}

					// air
					if (this.opts.air)
					{
						this.$air.remove();
					}

					if (this.opts.toolbar && this.$toolbar)
					{
						this.$toolbar.remove();
					}

					// modal
					if (this.$modalBox)
					{
						this.$modalBox.remove();
					}

					if (this.$modalOverlay)
					{
						this.$modalOverlay.remove();
					}

					// hide link's tooltip
					$('.redactor-link-tooltip').remove();

					// autosave
					clearInterval(this.autosaveTimeout);
				}
			};
		},

		// =detect
		detect: function()
		{
			return {

				// public
				isWebkit: function()
				{
					return /webkit/.test(this.opts.userAgent);
				},
				isFirefox: function()
				{
					return this.opts.userAgent.indexOf('firefox') > -1;
				},
				isIe: function(v)
				{
                    if (document.documentMode || /Edge/.test(navigator.userAgent))
                    {
                        return 'edge';
                    }

					var ie;
					ie = RegExp('msie' + (!isNaN(v)?('\\s'+v):''), 'i').test(navigator.userAgent);

					if (!ie)
					{
						ie = !!navigator.userAgent.match(/Trident.*rv[ :]*11\./);
					}

					return ie;
				},
				isMobile: function()
				{
					return /(iPhone|iPod|BlackBerry|Android)/.test(navigator.userAgent);
				},
				isDesktop: function()
				{
					return !/(iPhone|iPod|iPad|BlackBerry|Android)/.test(navigator.userAgent);
				},
				isIpad: function()
				{
					return /iPad/.test(navigator.userAgent);
				}

			};
		},

		// =dropdown
		dropdown: function()
		{
			return {
				active: false,
				button: false,
				key: false,
				position: [],
				getDropdown: function()
				{
					return this.dropdown.active;
				},
				build: function(name, $dropdown, dropdownObject)
				{
					dropdownObject = this.dropdown.buildFormatting(name, dropdownObject);

					$.each(dropdownObject, $.proxy(function(btnName, btnObject)
					{
						var $item = this.dropdown.buildItem(btnName, btnObject);

						this.observe.addDropdown($item, btnName, btnObject);
						$dropdown.attr('rel', name).append($item);

					}, this));
				},
				buildFormatting: function(name, dropdownObject)
				{
					if (name !== 'format' || this.opts.formattingAdd === false)
					{
						return dropdownObject;
					}

					$.each(this.opts.formattingAdd, $.proxy(function(i,s)
					{
						var type = (this.utils.isBlockTag(s.args[0])) ? 'block' : 'inline';

						dropdownObject[i] = {
							func: (type === 'block') ? 'block.format' : 'inline.format',
							args: s.args,
							title: s.title
						};

					}, this));

					return dropdownObject;
				},
				buildItem: function(btnName, btnObject)
				{
					var $itemContainer = $('<li />');
					if (typeof btnObject.classname !== 'undefined')
					{
    					$itemContainer.addClass(btnObject.classname);
					}

					if (btnName.search(/^divider/i) !== -1)
					{
    					$itemContainer.addClass('redactor-dropdown-divider');

    					return $itemContainer;
					}

					var $item = $('<a href="#" class="redactor-dropdown-' + btnName + '" role="button" />');
					var $itemSpan = $('<span />').html(btnObject.title);

					$item.append($itemSpan);
					$item.on('mousedown', $.proxy(function(e)
					{
						e.preventDefault();

						this.dropdown.buildClick(e, btnName, btnObject);

					}, this));

					$itemContainer.append($item);

					return $itemContainer;

				},
				buildClick: function(e, btnName, btnObject)
				{
					if ($(e.target).hasClass('redactor-dropdown-link-inactive'))
					{
						return;
					}

					var command = this.dropdown.buildCommand(btnObject);

					if (typeof btnObject.args !== ' undefined')
					{
						this.button.toggle(e, btnName, command.type, command.callback, btnObject.args);
					}
					else
					{
						this.button.toggle(e, btnName, command.type, command.callback);
					}
				},
				buildCommand: function(btnObject)
				{
					var command = {};
					command.type = 'func';
					command.callback = btnObject.func;

					if (btnObject.command)
					{
						command.type = 'command';
						command.callback = btnObject.command;
					}
					else if (btnObject.dropdown)
					{
						command.type = 'dropdown';
						command.callback = btnObject.dropdown;
					}

					return command;
				},
				show: function(e, key)
				{
					if (this.detect.isDesktop())
					{
						this.core.editor().focus();
					}

					this.dropdown.hideAll(false, key);

					this.dropdown.key = key;
					this.dropdown.button = this.button.get(this.dropdown.key);

					if (this.dropdown.button.hasClass('dropact'))
					{
						this.dropdown.hide();
						return;
					}

					// re append
					this.dropdown.active = this.dropdown.button.data('dropdown').appendTo(document.body);

					// callback
					this.core.callback('dropdownShow', { dropdown: this.dropdown.active, key: this.dropdown.key, button: this.dropdown.button });

					// set button
					this.button.setActive(this.dropdown.key);
					this.dropdown.button.addClass('dropact');

					// position
					this.dropdown.getButtonPosition();

					// show
					if (this.button.toolbar().hasClass('toolbar-fixed-box') && this.detect.isDesktop())
					{
						this.dropdown.showIsFixedToolbar();
					}
					else
					{
						this.dropdown.showIsUnFixedToolbar();
					}

					// disable scroll whan dropdown scroll
					if (this.detect.isDesktop() && !this.detect.isFirefox())
					{
						this.dropdown.active.on('mouseover.redactor-dropdown', $.proxy(this.utils.disableBodyScroll, this));
						this.dropdown.active.on('mouseout.redactor-dropdown mousedown.redactor-dropdown', $.proxy(this.utils.enableBodyScroll, this));
					}

					e.stopPropagation();

				},
				showIsFixedToolbar: function()
				{
					var top = this.dropdown.button.position().top + this.dropdown.button.innerHeight() + this.opts.toolbarFixedTopOffset;

					var position = 'fixed';
					if (this.opts.toolbarFixedTarget !== document)
					{
						top = (this.dropdown.button.innerHeight() + this.$toolbar.offset().top) + this.opts.toolbarFixedTopOffset;
						position = 'absolute';
					}

					this.dropdown.active.css({

						position: position,
						left: this.dropdown.position.left + 'px',
						top: top + 'px'

					}).show();

					// animate
					this.dropdown.active.redactorAnimation('slideDown', { duration: 0.2 }, $.proxy(function()
					{
						this.dropdown.enableCallback();
						this.dropdown.enableEvents();

					}, this));
				},
				showIsUnFixedToolbar: function()
				{
					this.dropdown.active.css({

						position: 'absolute',
						left: this.dropdown.position.left + 'px',
						top: (this.dropdown.button.innerHeight() + this.dropdown.position.top) + 'px'

					}).show();

					// animate
					this.dropdown.active.redactorAnimation(((this.opts.animation) ? 'slideDown' : 'show'), { duration: 0.2 }, $.proxy(function()
					{
						this.dropdown.enableCallback();
						this.dropdown.enableEvents();

					}, this));
				},
				enableEvents: function()
				{
					$(document).on('mousedown.redactor-dropdown', $.proxy(this.dropdown.hideAll, this));
					this.core.editor().on('touchstart.redactor-dropdown', $.proxy(this.dropdown.hideAll, this));
					$(document).on('keyup.redactor-dropdown', $.proxy(this.dropdown.closeHandler, this));
				},
				enableCallback: function()
				{
					this.core.callback('dropdownShown', { dropdown: this.dropdown.active, key: this.dropdown.key, button: this.dropdown.button });
				},
				getButtonPosition: function()
				{
					this.dropdown.position = this.dropdown.button.offset();

					// fix right placement
					var dropdownWidth = this.dropdown.active.width();
					if ((this.dropdown.position.left + dropdownWidth) > $(document).width())
					{
						this.dropdown.position.left = Math.max(0, this.dropdown.position.left - dropdownWidth + parseInt(this.dropdown.button.innerWidth()));
					}

				},
				closeHandler: function(e)
				{
					if (e.which !== this.keyCode.ESC)
					{
						return;
					}

					this.dropdown.hideAll(e);
					this.core.editor().focus();
				},
				hideAll: function(e, key)
				{
					if (this.detect.isDesktop())
					{
						this.utils.enableBodyScroll();
					}

					if (e !== false && $(e.target).closest('.redactor-dropdown').length !== 0)
					{
						return;
					}

					var $buttons = (typeof key === 'undefined') ? this.button.toolbar().find('a.dropact') : this.button.toolbar().find('a.dropact').not('.re-' + key);
					var $elements = (typeof key === 'undefined') ? $('.redactor-dropdown-' + this.uuid) : $('.redactor-dropdown-' + this.uuid).not('.redactor-dropdown-box-' + key);

					if ($elements.length !== 0)
					{
						$(document).off('.redactor-dropdown');
						this.core.editor().off('.redactor-dropdown');

						$.each($elements, $.proxy(function(i,s)
						{
							var $el = $(s);

							this.core.callback('dropdownHide', $el);

							$el.hide();
							$el.off('mouseover mouseout').off('.redactor-dropdown');

						}, this));

						$buttons .removeClass('redactor-act dropact');
					}

				},
				hide: function ()
				{
					if (this.dropdown.active === false)
					{
						return;
					}

					if (this.detect.isDesktop())
					{
						this.utils.enableBodyScroll();
					}

					this.dropdown.active.redactorAnimation(((this.opts.animation) ? 'slideUp' : 'hide'), { duration: 0.2 }, $.proxy(function()
					{
						$(document).off('.redactor-dropdown');
						this.core.editor().off('.redactor-dropdown');

						this.dropdown.hideOut();


					}, this));
				},
				hideOut: function()
				{
					this.core.callback('dropdownHide', this.dropdown.active);

					this.dropdown.button.removeClass('redactor-act dropact');
					this.dropdown.active.off('mouseover mouseout').off('.redactor-dropdown');
					this.dropdown.button = false;
					this.dropdown.key = false;
					this.dropdown.active = false;
				}
			};
		},

		// =events
		events: function()
		{
			return {
				focused: false,
				blured: true,
				dropImage: false,
				stopChanges: false,
				stopDetectChanges: function()
				{
					this.events.stopChanges = true;
				},
				startDetectChanges: function()
				{
					var self = this;
					setTimeout(function()
					{
						self.events.stopChanges = false;
					}, 1);
				},
				dragover: function(e)
				{
					e.preventDefault();
					e.stopPropagation();

					if (e.target.tagName === 'IMG')
					{
						$(e.target).addClass('redactor-image-dragover');
					}

				},
				dragleave: function(e)
				{
					// remove image dragover
					this.core.editor().find('img').removeClass('redactor-image-dragover');
				},
				drop: function(e)
				{
					e = e.originalEvent || e;

					// remove image dragover
					this.core.editor().find('img').removeClass('redactor-image-dragover');

					if (this.opts.type === 'inline' || this.opts.type === 'pre')
					{
						e.preventDefault();
						return false;
					}

					if (window.FormData === undefined || !e.dataTransfer)
					{
						return true;
					}

					if (e.dataTransfer.files.length === 0)
					{
						return this.events.onDrop(e);
					}
					else
					{
						this.events.onDropUpload(e);
					}

					this.core.callback('drop', e);

				},
				click: function(e)
				{
					var event = this.core.getEvent();
					var type = (event === 'click' || event === 'arrow') ? false : 'click';

                    this.core.addEvent(type);
					this.utils.disableSelectAll();
					this.core.callback('click', e);
				},
				focus: function(e)
				{
					if (this.rtePaste)
					{
						return;
					}

					if (this.events.isCallback('focus'))
					{
						this.core.callback('focus', e);
					}

					this.events.focused = true;
					this.events.blured = false;

					// tab
					if (this.selection.current() === false)
					{
						var sel = this.selection.get();
						var range = this.selection.range(sel);

						range.setStart(this.core.editor()[0], 0);
						range.setEnd(this.core.editor()[0], 0);
						this.selection.update(sel, range);
					}

				},
				blur: function(e)
				{
					if (this.start || this.rtePaste)
					{
						return;
					}

					if ($(e.target).closest('#' + this.core.id() + ', .redactor-toolbar, .redactor-dropdown, #redactor-modal-box').length !== 0)
					{
						return;
					}

					if (!this.events.blured && this.events.isCallback('blur'))
					{
						this.core.callback('blur', e);
					}

					this.events.focused = false;
					this.events.blured = true;
				},
				touchImageEditing: function()
				{
					var scrollTimer = -1;
					this.events.imageEditing = false;
					$(window).on('touchmove.redactor.' + this.uuid, $.proxy(function()
					{
						this.events.imageEditing = true;
						if (scrollTimer !== -1)
						{
							clearTimeout(scrollTimer);
						}

						scrollTimer = setTimeout($.proxy(function()
						{
							this.events.imageEditing = false;

						}, this), 500);

					}, this));
				},
				init: function()
				{
					this.core.editor().on('dragover.redactor dragenter.redactor', $.proxy(this.events.dragover, this));
					this.core.editor().on('dragleave.redactor', $.proxy(this.events.dragleave, this));
					this.core.editor().on('drop.redactor', $.proxy(this.events.drop, this));
					this.core.editor().on('click.redactor', $.proxy(this.events.click, this));
					this.core.editor().on('paste.redactor', $.proxy(this.paste.init, this));
					this.core.editor().on('keydown.redactor', $.proxy(this.keydown.init, this));
					this.core.editor().on('keyup.redactor', $.proxy(this.keyup.init, this));
					this.core.editor().on('focus.redactor', $.proxy(this.events.focus, this));

					$(document).on('mousedown.redactor-blur.' + this.uuid, $.proxy(this.events.blur, this));

					this.events.touchImageEditing();

					this.events.createObserver();
					this.events.setupObserver();

				},
				createObserver: function()
				{
					var self = this;
					this.events.observer = new MutationObserver(function(mutations)
					{
						mutations.forEach($.proxy(self.events.iterateObserver, self));
					});

				},
				iterateObserver: function(mutation)
				{

					var stop = false;

					// target
					if (((this.opts.type === 'textarea' || this.opts.type === 'div')
					    && (!this.detect.isFirefox() && mutation.target === this.core.editor()[0]))
					    || (mutation.attributeName === 'class' && mutation.target === this.core.editor()[0])
                    )
					{
						stop = true;
					}

					if (!stop)
					{
    					this.observe.load();
						this.events.changeHandler();
					}
				},
				setupObserver: function()
				{
					this.events.observer.observe(this.core.editor()[0], {
						 attributes: true,
						 subtree: true,
						 childList: true,
						 characterData: true,
						 characterDataOldValue: true
					});
				},
				changeHandler: function()
				{
					if (this.events.stopChanges)
					{
						return;
					}

					this.code.sync();

					// autosave
					if (this.autosave.is())
					{
						clearTimeout(this.autosaveTimeout);
						this.autosaveTimeout = setTimeout($.proxy(this.autosave.send, this), 300);
					}

				},
				onDropUpload: function(e)
				{
					e.preventDefault();
					e.stopPropagation();

					if ((!this.opts.dragImageUpload && !this.opts.dragFileUpload) || (this.opts.imageUpload === null && this.opts.fileUpload === null))
					{
						return;
					}

					if (e.target.tagName === 'IMG')
					{
						this.events.dropImage = e.target;
					}

					var files = e.dataTransfer.files;
                    var len = files.length;
					for (var i = 0; i < len; i++)
					{
    					this.upload.directUpload(files[i], e);
    				}
				},
				onDrop: function(e)
				{
					this.core.callback('drop', e);
				},
				isCallback: function(name)
				{
					return (typeof this.opts.callbacks[name] !== 'undefined' && $.isFunction(this.opts.callbacks[name]));
				},

				// #backward
				stopDetect: function()
				{
					this.events.stopDetectChanges();
				},
				startDetect: function()
				{
					this.events.startDetectChanges();
				}

			};
		},

		// =file
		file: function()
		{
			return {
				is: function()
				{
					return !(!this.opts.fileUpload || !this.opts.fileUpload && !this.opts.s3);
				},
				show: function()
				{
					// build modal
					this.modal.load('file', this.lang.get('file'), 700);

					// build upload
					this.upload.init('#redactor-modal-file-upload', this.opts.fileUpload, this.file.insert);

					// set selected text
					$('#redactor-filename').val(this.selection.get().toString());

					// show
					this.modal.show();
				},
				insert: function(json, direct, e)
				{
					// error callback
					if (typeof json.error !== 'undefined')
					{
						this.modal.close();
						this.core.callback('fileUploadError', json);
						return;
					}

					this.file.release(e, direct);

					// prepare
					this.buffer.set();
					this.air.collapsed();

					// get
					var text = this.file.text(json);
					var $link = $('<a />').attr('href', json.url).text(text);
					var id = (typeof json.id === 'undefined') ? '' : json.id;
					var type = (typeof json.s3 === 'undefined') ? 'file' : 's3';

					// set id
					$link.attr('data-' + type, id);

					// insert
					$link = $(this.insert.node($link));

					// focus
					this.caret.after($link);

					// callback
					this.storage.add({ type: type, node: $link[0], url: $link[0].href, id: id });

					if (direct !== null)
					{
						this.core.callback('fileUpload', $link, json);
					}

				},
				release: function(e, direct)
				{
					if (direct)
					{
						// drag and drop upload
						this.marker.remove();
						this.insert.nodeToPoint(e, this.marker.get());
						this.selection.restore();
					}
					else
					{
						// upload from modal
						this.modal.close();
					}
				},
				text: function(json)
				{
					var text = $('#redactor-filename').val();

					return (typeof text === 'undefined' || text === '') ? json.name : text;
				}
			};
		},

		// =focus
		focus: function()
		{
			return {
				start: function()
				{
					this.core.editor().focus();

					if (this.opts.type === 'inline')
					{
						return;
					}

					var $first = this.focus.first();
					if ($first !== false)
					{
						this.caret.start($first);
					}
				},
				end: function()
				{
					this.core.editor().focus();

					var last = (this.opts.inline) ? this.core.editor() : this.focus.last();
					if (last.length === 0)
					{
						return;
					}

					// get inline last node
					var lastNode = this.focus.lastChild(last);
					if (!this.detect.isWebkit() && lastNode !== false)
					{
						this.caret.end(lastNode);
					}
					else
					{
						var sel = this.selection.get();
						var range = this.selection.range(sel);

						if (range !== null)
						{
							range.selectNodeContents(last[0]);
							range.collapse(false);

							this.selection.update(sel, range);
						}
						else
						{
							this.caret.end(last);
						}
					}

				},
				first: function()
				{
					var $first = this.core.editor().children().first();
					if ($first.length === 0 && ($first[0].length === 0 || $first[0].tagName === 'BR' || $first[0].tagName === 'HR' || $first[0].nodeType === 3))
					{
						return false;
					}

					if ($first[0].tagName === 'UL' || $first[0].tagName === 'OL')
					{
						return $first.find('li').first();
					}

					return $first;

				},
				last: function()
				{
					return this.core.editor().children().last();
				},
				lastChild: function(last)
				{
					var lastNode = last[0].lastChild;

					return (lastNode !== null && this.utils.isInlineTag(lastNode.tagName)) ? lastNode : false;
				},
				is: function()
				{
					return (this.core.editor()[0] === document.activeElement);
				}
			};
		},

		// =image
		image: function()
		{
			return {
				is: function()
				{
					return !(!this.opts.imageUpload || !this.opts.imageUpload && !this.opts.s3);
				},
				show: function()
				{
					// build modal
					this.modal.load('image', this.lang.get('image'), 700);

					// build upload
					this.upload.init('#redactor-modal-image-droparea', this.opts.imageUpload, this.image.insert);
					this.modal.show();

				},
				insert: function(json, direct, e)
				{
					var $img;

					// error callback
					if (typeof json.error !== 'undefined')
					{
						this.modal.close();
						this.events.dropImage = false;
						this.core.callback('imageUploadError', json, e);
						return;
					}

					// change image
					if (this.events.dropImage !== false)
					{
						$img = $(this.events.dropImage);

						this.core.callback('imageDelete', $img[0].src, $img);

						$img.attr('src', json.url);

						this.events.dropImage = false;
						this.core.callback('imageUpload', $img, json);
						return;
					}

					this.placeholder.hide();
					var $figure = $('<' + this.opts.imageTag + '>');

					$img = $('<img>');
					$img.attr('src', json.url);

					// set id
					var id = (typeof json.id === 'undefined') ? '' : json.id;
					var type = (typeof json.s3 === 'undefined') ? 'image' : 's3';
					$img.attr('data-' + type, id);

					$figure.append($img);

					var pre = this.utils.isTag(this.selection.current(), 'pre');

					if (direct)
					{
						this.air.collapsed();
						this.marker.remove();

						var node = this.insert.nodeToPoint(e, this.marker.get());
						var $next = $(node).next();

						this.selection.restore();

						// buffer
						this.buffer.set();

						// insert
						if (typeof $next !== 'undefined' && $next.length !== 0 && $next[0].tagName === 'IMG')
						{
							// delete callback
							this.core.callback('imageDelete', $next[0].src, $next);

							// replace
							$next.closest('figure, p', this.core.editor()[0]).replaceWith($figure);
							this.caret.after($figure);
						}
						else
						{
							if (pre)
							{
								$(pre).after($figure);
							}
							else
							{
								this.insert.node($figure);
							}

							this.caret.after($figure);
						}

					}
					else
					{
						this.modal.close();

						// buffer
						this.buffer.set();

						// insert
						this.air.collapsed();

						if (pre)
						{
							$(pre).after($figure);
						}
						else
						{
							this.insert.node($figure);
						}

						this.caret.after($figure);
					}

					this.events.dropImage = false;

					this.storage.add({ type: type, node: $img[0], url: $img[0].src, id: id });

					if (direct !== null)
					{
						this.core.callback('imageUpload', $img, json);
					}
					else
					{
    					this.core.callback('imageInserted', $img, json);
					}
				},
				setEditable: function($image)
				{
					$image.on('dragstart', function(e)
					{
						e.preventDefault();
					});

                    if (this.opts.imageResizable)
                    {
    					var handler = $.proxy(function(e)
    					{
    						this.observe.image = $image;
    						this.image.resizer = this.image.loadEditableControls($image);

    						$(document).on('mousedown.redactor-image-resize-hide.' + this.uuid, $.proxy(this.image.hideResize, this));

    						if (this.image.resizer)
    						{
                                this.image.resizer.on('mousedown.redactor touchstart.redactor', $.proxy(function(e)
        						{
        							this.image.setResizable(e, $image);
        						}, this));
    						}

    					}, this);

    					$image.off('mousedown.redactor').on('mousedown.redactor', $.proxy(this.image.hideResize, this));
    					$image.off('click.redactor touchstart.redactor').on('click.redactor touchstart.redactor', handler);
                    }
                    else
                    {
    					$image.off('click.redactor touchstart.redactor').on('click.redactor touchstart.redactor', $.proxy(function(e)
    					{
    						setTimeout($.proxy(function()
    						{
    							this.image.showEdit($image);

    						}, this), 200);

    					}, this));
                    }

				},
				setResizable: function(e, $image)
				{
					e.preventDefault();

				    this.image.resizeHandle = {
				        x : e.pageX,
				        y : e.pageY,
				        el : $image,
				        ratio: $image.width() / $image.height(),
				        h: $image.height()
				    };

				    e = e.originalEvent || e;

				    if (e.targetTouches)
				    {
				         this.image.resizeHandle.x = e.targetTouches[0].pageX;
				         this.image.resizeHandle.y = e.targetTouches[0].pageY;
				    }

					this.image.startResize();


				},
				startResize: function()
				{
					$(document).on('mousemove.redactor-image-resize touchmove.redactor-image-resize', $.proxy(this.image.moveResize, this));
					$(document).on('mouseup.redactor-image-resize touchend.redactor-image-resize', $.proxy(this.image.stopResize, this));
				},
				moveResize: function(e)
				{
					e.preventDefault();

					e = e.originalEvent || e;

					var height = this.image.resizeHandle.h;

		            if (e.targetTouches) height += (e.targetTouches[0].pageY -  this.image.resizeHandle.y);
		            else height += (e.pageY -  this.image.resizeHandle.y);

					var width = Math.round(height * this.image.resizeHandle.ratio);

					if (height < 50 || width < 100) return;

					var height = Math.round(this.image.resizeHandle.el.width() / this.image.resizeHandle.ratio);

					this.image.resizeHandle.el.attr({width: width, height: height});
		            this.image.resizeHandle.el.width(width);
		            this.image.resizeHandle.el.height(height);

                    $('#redactor-image-dimension').html(parseInt(width)+'x'+parseInt(height));

		            this.code.sync();
				},
				stopResize: function()
				{
					this.handle = false;
					$(document).off('.redactor-image-resize');

					this.image.hideResize();
				},
                hideResize: function(e)
				{
					if (e && $(e.target).closest('#redactor-image-box', this.$editor[0]).length !== 0) return;
					if (e && e.target.tagName == 'IMG')
					{
						var $image = $(e.target);
					}

					var imageBox = this.$editor.find('#redactor-image-box');
					if (imageBox.length === 0) return;

					$('#redactor-image-editter').remove();
					$('#redactor-image-resizer').remove();
					$('#redactor-image-dimension').remove();

					imageBox.find('img').css({
						marginTop: imageBox[0].style.marginTop,
						marginBottom: imageBox[0].style.marginBottom,
						marginLeft: imageBox[0].style.marginLeft,
						marginRight: imageBox[0].style.marginRight
					});

					imageBox.css('margin', '');
					imageBox.find('img').css('opacity', '');
					imageBox.replaceWith(function()
					{
						return $(this).contents();
					});

					$(document).off('mousedown.redactor-image-resize-hide.' + this.uuid);

					if (typeof this.image.resizeHandle !== 'undefined')
					{
						this.image.resizeHandle.el.attr('rel', this.image.resizeHandle.el.attr('style'));
					}
				},
				loadResizableControls: function($image, imageBox)
				{
					if (this.opts.imageResizable && !this.detect.isMobile())
					{
						var imageResizer = $('<span id="redactor-image-resizer" data-redactor="verified"></span>');
						var imageDimension = $('<span id="redactor-image-dimension"></span>');

						imageDimension.html(parseInt($image.height())+'x'+parseInt($image.width()));

						if (!this.detect.isDesktop())
						{
							imageResizer.css({ width: '15px', height: '15px' });
						}

						imageResizer.attr('contenteditable', false);
						imageBox.append(imageResizer);
						imageBox.append(imageDimension);
						imageBox.append($image);

						return imageResizer;
					}
					else
					{
						imageBox.append($image);
						return false;
					}
				},
				loadEditableControls: function($image)
				{
					var imageBox = $('<span id="redactor-image-box" data-redactor="verified">');
					imageBox.css('float', $image.css('float')).attr('contenteditable', false);

					if ($image[0].style.margin != 'auto')
					{
						imageBox.css({
							marginTop: $image[0].style.marginTop,
							marginBottom: $image[0].style.marginBottom,
							marginLeft: $image[0].style.marginLeft,
							marginRight: $image[0].style.marginRight
						});

						$image.css('margin', '');
					}
					else
					{
						imageBox.css({ 'display': 'block', 'margin': 'auto' });
					}

					$image.css('opacity', '.5').after(imageBox);


					if (this.opts.imageEditable)
					{
						// editter
						this.image.editter = $('<span id="redactor-image-editter" data-redactor="verified">' + this.lang.get('edit') + '</span>');
						this.image.editter.attr('contenteditable', false);
						this.image.editter.on('click', $.proxy(function()
						{
							this.image.showEdit($image);
						}, this));

						imageBox.append(this.image.editter);

						// position correction
						var editerWidth = this.image.editter.innerWidth();
						this.image.editter.css('margin-left', '-' + editerWidth/2 + 'px');
					}

					return this.image.loadResizableControls($image, imageBox);

				},
				showEdit: function($image)
				{
					if (this.events.imageEditing)
					{
						return;
					}

					this.observe.image = $image;

					var $link = $image.closest('a', this.$editor[0]);
    				var $figure = $image.closest('figure', this.$editor[0]);
    				var $container = ($figure.length !== 0) ? $figure : $image;

					this.modal.load('image-edit', this.lang.get('edit'), 705);

					this.image.buttonDelete = this.modal.getDeleteButton().text(this.lang.get('delete'));
					this.image.buttonSave = this.modal.getActionButton().text(this.lang.get('save'));

					this.image.buttonDelete.on('click', $.proxy(this.image.remove, this));
					this.image.buttonSave.on('click', $.proxy(this.image.update, this));

					if (this.opts.imageCaption === false)
					{
						$('#redactor-image-caption').val('').hide().prev().hide();
					}
					else
					{
						var $parent = $image.closest(this.opts.imageTag, this.$editor[0]);
						var $ficaption = $parent.find('figcaption');
						if ($ficaption !== 0)
						{

							$('#redactor-image-caption').val($ficaption.text()).show();
						}
					}

					if (!this.opts.imagePosition)
					{
    					$('.redactor-image-position-option').hide();
    				}
					else
					{
    					var isCentered = ($figure.length !== 0) ? ($container.css('text-align') === 'center') : ($container.css('display') == 'block' && $container.css('float') == 'none');
						var floatValue = (isCentered) ? 'center' : $container.css('float');
						$('#redactor-image-align').val(floatValue);
					}

					$('#redactor-image-preview').html($('<img src="' + $image.attr('src') + '" style="max-width: 100%;">'));
					$('#redactor-image-title').val($image.attr('alt'));
					$('#redactor-image-width').val(parseInt($image.width()));

					var $redactorImageLink = $('#redactor-image-link');
					$redactorImageLink.attr('href', $image.attr('src'));
					if ($link.length !== 0)
					{
						$redactorImageLink.val($link.attr('href'));
						if ($link.attr('target') === '_blank')
						{
							$('#redactor-image-link-blank').prop('checked', true);
						}
					}

					// hide link's tooltip
					$('.redactor-link-tooltip').remove();

					this.modal.show();

					// focus
					if (this.detect.isDesktop())
					{
						$('#redactor-image-title').focus();
					}

				},
				update: function()
				{
					var $image = this.observe.image;
					var $link = $image.closest('a', this.core.editor()[0]);

					var title = $('#redactor-image-title').val().replace(/(<([^>]+)>)/ig,"");
					$image.attr('alt', title).attr('title', title);
					$image.attr('width', $('#redactor-image-width').val());

                    this.image.setFloating($image);

					// as link
					var link = $.trim($('#redactor-image-link').val()).replace(/(<([^>]+)>)/ig,"");
					if (link !== '')
					{
						// test url (add protocol)
						var pattern = '((xn--)?[a-z0-9]+(-[a-z0-9]+)*\\.)+[a-z]{2,}';
						var re = new RegExp('^(http|ftp|https)://' + pattern, 'i');
						var re2 = new RegExp('^' + pattern, 'i');

						if (link.search(re) === -1 && link.search(re2) === 0 && this.opts.linkProtocol)
						{
							link = this.opts.linkProtocol + '://' + link;
						}

						var target = ($('#redactor-image-link-blank').prop('checked')) ? true : false;

						if ($link.length === 0)
						{
							var a = $('<a href="' + link + '" id="redactor-img-tmp">' + this.utils.getOuterHtml($image) + '</a>');
							if (target)
							{
								a.attr('target', '_blank');
							}

							$image = $image.replaceWith(a);
							$link = this.core.editor().find('#redactor-img-tmp');
							$link.removeAttr('id');
						}
						else
						{
							$link.attr('href', link);
							if (target)
							{
								$link.attr('target', '_blank');
							}
							else
							{
								$link.removeAttr('target');
							}
						}
					}
					else if ($link.length !== 0)
					{
						$link.replaceWith(this.utils.getOuterHtml($image));
					}

                    this.image.addCaption($image, $link);
					this.modal.close();

					// buffer
					this.buffer.set();

				},
				setFloating: function($image)
				{
    				var $figure = $image.closest('figure', this.$editor[0]);
    				var $container = ($figure.length !== 0) ? $figure : $image;
					var floating = $('#redactor-image-align').val();

					var imageFloat = '';
					var imageDisplay = '';
					var imageMargin = '';
					var textAlign = '';

					switch (floating)
					{
						case 'left':
							imageFloat = 'left';
							imageMargin = '0 ' + this.opts.imageFloatMargin + ' ' + this.opts.imageFloatMargin + ' 0';
						break;
						case 'right':
							imageFloat = 'right';
							imageMargin = '0 0 ' + this.opts.imageFloatMargin + ' ' + this.opts.imageFloatMargin;
						break;
						case 'center':

                            if ($figure.length !== 0)
                            {
                                textAlign = 'center';
                            }
                            else
                            {
	    						imageDisplay = 'block';
    							imageMargin = 'auto';
							}

						break;
					}

					$container.css({ 'float': imageFloat, 'display': imageDisplay, 'margin': imageMargin, 'text-align': textAlign });
					$container.attr('rel', $image.attr('style'));
				},
				addCaption: function($image, $link)
				{
                    var caption = $('#redactor-image-caption').val();

                    var $target = ($link.length !== 0) ? $link : $image;
					var $figcaption = $target.next();

					if ($figcaption.length === 0 || $figcaption[0].tagName !== 'FIGCAPTION')
					{
						$figcaption = false;
					}

					if (caption !== '')
					{
						if ($figcaption === false)
						{
							$figcaption = $('<figcaption />').text(caption);
							$target.after($figcaption);
						}
						else
						{
							$figcaption.text(caption);
						}
					}
					else if ($figcaption !== false)
					{
						$figcaption.remove();
					}
				},
				remove: function(e, $image, index)
				{
					$image = (typeof $image === 'undefined') ? $(this.observe.image) : $image;

					// delete from modal
					if (typeof e !== 'boolean')
					{
						this.buffer.set();
					}

					this.events.stopDetectChanges();

					var $link = $image.closest('a', this.core.editor()[0]);
					var $figure = $image.closest(this.opts.imageTag, this.core.editor()[0]);
					var $parent = $image.parent();

					// callback
                    var imageDeleteStop = this.core.callback('imageDelete', e, $image[0]);
					if (imageDeleteStop === false)
					{
						e.preventDefault();
						return false;
					}

					if ($('#redactor-image-box').length !== 0)
					{
						$parent = $('#redactor-image-box').parent();
					}

					var $next, $prev;
					if ($figure.length !== 0)
					{
						$prev = $figure.prev();
						$next = $figure.next();
						$figure.remove();
					}
					else if ($link.length !== 0)
					{
						$parent = $link.parent();
						$link.remove();
					}
					else
					{
						$image.remove();
					}

					$('#redactor-image-box').remove();

					if (e !== false)
					{
						if ($next && $next.length !== 0)
						{
							this.caret.start($next);
						}
						else if ($prev && $prev.length !== 0)
						{
                            this.caret.end($prev);
						}
					}

					if (typeof e !== 'boolean')
					{
						this.modal.close();
					}

					this.utils.restoreScroll();
					this.observe.image = false;
					this.events.startDetectChanges();
					this.placeholder.enable();
					this.code.sync();

				}
			};
		},

		// =indent
		indent: function()
		{
			return {
				increase: function()
				{
					if (!this.list.get())
					{
						return;
					}

					var $current = $(this.selection.current()).closest('li');
					var $list = $current.closest('ul, ol', this.core.editor()[0]);

					var $li = $current.closest('li');
					var $prev = $li.prev();
					if ($prev.length === 0 || $prev[0].tagName !== 'LI')
					{
						return;
					}

					this.buffer.set();


					if (this.utils.isCollapsed())
					{
						var listTag = $list[0].tagName;
						var $newList = $('<' + listTag + ' />');

						this.selection.save();

                        var $ol = $prev.find('ol').first();
                        if ($ol.length === 1)
                        {
                            $ol.append($current);
                        }
                        else
                        {
                            var listTag = $list[0].tagName;
                            var $newList = $('<' + listTag + ' />');
                            $newList.append($current);
                            $prev.append($newList);
                        }

						this.selection.restore();
					}
					else
					{
						document.execCommand('indent');

						// normalize
						this.selection.save();
						this.indent.removeEmpty();
						this.indent.normalize();
						this.selection.restore();
					}
				},
				decrease: function()
				{
					if (!this.list.get())
					{
						return;
					}

					var $current = $(this.selection.current()).closest('li');
					var $list = $current.closest('ul, ol', this.core.editor()[0]);

					this.buffer.set();

					document.execCommand('outdent');

					var $item = $(this.selection.current()).closest('li', this.core.editor()[0]);

					if (this.utils.isCollapsed())
					{
						this.indent.repositionItem($item);
					}

					if ($item.length === 0)
					{
						document.execCommand('formatblock', false, 'p');
						$item = $(this.selection.current());
						var $next = $item.next();
						if ($next.length !== 0 && $next[0].tagName === 'BR')
						{
							$next.remove();
						}
					}

					// normalize
					this.selection.save();
					this.indent.removeEmpty();
					this.indent.normalize();
					this.selection.restore();

				},
				repositionItem: function($item)
				{
    				var $next = $item.next();
    				if ($next.length !== 0 && ($next[0].tagName !== 'UL' || $next[0].tagName !== 'OL'))
    				{
        				$item.append($next);
    				}

					var $prev = $item.prev();
					if ($prev.length !== 0 && $prev[0].tagName !== 'LI')
					{
						this.selection.save();
						var $li = $item.parents('li', this.core.editor()[0]);
						$li.after($item);
						this.selection.restore();
					}
				},
				normalize: function()
				{
					this.core.editor().find('li').each($.proxy(function(i,s)
					{
						var $el = $(s);

						// remove style
						$el.find(this.opts.inlineTags.join(',')).each(function()
						{
							$(this).removeAttr('style');
						});

						var $parent = $el.parent();
						if ($parent.length !== 0 && $parent[0].tagName === 'LI')
						{
							$parent.after($el);
							return;
						}

						var $next = $el.next();
						if ($next.length !== 0 && ($next[0].tagName === 'UL' || $next[0].tagName === 'OL'))
						{
							$el.append($next);
						}

					}, this));

				},
				removeEmpty: function($list)
				{
					var $lists = this.core.editor().find('ul, ol');
					var $items = this.core.editor().find('li');

					$items.each($.proxy(function(i, s)
					{
						this.indent.removeItemEmpty(s);

					}, this));

					$lists.each($.proxy(function(i, s)
					{
						this.indent.removeItemEmpty(s);

					}, this));

					$items.each($.proxy(function(i, s)
					{
						this.indent.removeItemEmpty(s);

					}, this));
				},
				removeItemEmpty: function(s)
				{
					var html = s.innerHTML.replace(/[\t\s\n]/g, '');
					html = html.replace(/<span><\/span>/g, '');

					if (html === '')
					{
						$(s).remove();
					}
				}
			};
		},

		// =inline
		inline: function()
		{
			return {
    			getClearedNodes: function()
    			{
                    var nodes = this.selection.nodes();
        			var newNodes = [];
        			var len = nodes.length;
                    var started = 0;

                    // find array slice
                    for (var i = 0; i < len; i++)
					{
						if ($(nodes[i]).hasClass('redactor-selection-marker'))
						{
    						started = i + 2;
    						break;
						}
					}

                    // find selected inline & text nodes
                    for (var i = 0; i < len; i++)
					{
						if (i >= started && !this.utils.isBlockTag(nodes[i].tagName))
						{
                            newNodes.push(nodes[i]);
						}
					}

					return newNodes;
    			},
                isConvertableAttr: function(node, attr, value)
                {
                    var nodeAttrValue = $(node).attr(attr);
                    if (nodeAttrValue)
                    {
                        if (attr === 'style')
                        {

                            value = $.trim(value).replace(/;$/, '')

                            var rules = value.split(';');
                            var count = 0;
                            for (var i = 0; i < rules.length; i++)
                            {
                                var arr = rules[i].split(':');
                                var ruleName = $.trim(arr[0]);
                                var ruleValue = $.trim(arr[1]);

                                if (ruleName.search(/color/) !== -1)
                                {
                                    var val = $(node).css(ruleName);
                                    if (val && (val === ruleValue || this.utils.rgb2hex(val) === ruleValue))
                                    {
                                        count++;
                                    }
                                }
                                else if ($(node).css(ruleName) === ruleValue)
                                {
                                    count++;
                                }
                            }

                            if (count === rules.length)
                            {
                                return 1;
                            }
                        }
                        else if (nodeAttrValue === value)
                        {
                            return 1;
                        }
                    }

                    return 0;

                },
    			isConvertable: function(node, nodeTag, tag, attr)
    			{
                    if (nodeTag === tag)
                    {
                        if (attr)
                        {
                            var count = 0;
                            for (var key in attr)
                            {
                                count += this.inline.isConvertableAttr(node, key, attr[key]);
                            }

                            if (count === Object.keys(attr).length)
                            {
                                return true;
                            }
                        }
                        else
                        {
                            return true;
                        }
                    }

                    return false;
    			},
    			setNodesStriked: function(nodes, tag, attr)
    			{
                    for (var i = 0; i < nodes.length; i++)
					{
                        var nodeTag = (nodes[i].tagName) ? nodes[i].tagName.toLowerCase() : undefined;

                        var parent = nodes[i].parentNode;
                        var parentTag = (parent && parent.tagName) ? parent.tagName.toLowerCase() : undefined;

                        var convertable = this.inline.isConvertable(parent, parentTag, tag, attr);
                        if (convertable)
                        {
                            var $el = $(parent).replaceWith(function()
                            {
                                return $('<strike>').append($(this).contents());
                            });

                            $el.attr('data-redactor-inline-converted');
                        }

                        var convertable = this.inline.isConvertable(nodes[i], nodeTag, tag, attr);
                        if (convertable)
                        {
                            var $el = $(nodes[i]).replaceWith(function()
                            {
                                return $('<strike>').append($(this).contents());
                            });
                        }
    				}
    			},
				format: function(tag, attr, value, type)
				{
    				if (typeof attr !== 'undefined' && typeof attr !== 'object')
    				{
        				var obj = {};
        				obj[attr] = value;
        				attr = obj;
    				}

                    tag = tag.toLowerCase();

					// Stop formatting pre/code
					if (this.utils.isCurrentOrParent(['PRE', 'CODE']))
					{
						return;
					}

					var tags = ['b', 'bold', 'i', 'italic', 'underline', 'strikethrough', 'deleted', 'superscript', 'subscript'];
					var replaced = ['strong', 'strong', 'em', 'em', 'u', 'del', 'del', 'sup', 'sub'];

					for (var i = 0; i < tags.length; i++)
					{
						if (tag === tags[i])
						{
							tag = replaced[i];
						}
					}

                    this.placeholder.hide();
					this.buffer.set();

					if (this.utils.isCollapsed())
					{
    					this.inline.formatCollapsed(tag, attr, value, type);
    				}
    				else
    				{
        				this.inline.formatUncollapsed(tag, attr, value, type);
    				}
				},
				formatUncollapsed: function(tag, attr, value, type)
				{
    				this.selection.save();

                    var nodes = this.inline.getClearedNodes();
                    this.inline.setNodesStriked(nodes, tag, attr);

                    this.selection.restore();

                    document.execCommand('strikethrough');

                    this.selection.saveInstant();

                    var self = this;
                    this.core.editor().find('strike').each(function()
    				{
                        var $el = self.utils.replaceToTag(this, tag);
        				for (var key in attr)
                        {
        				    self.inline.setAttr($el, key, attr[key], type);
        				}

        				// remove inside
        				var $inside = $el.find(tag);
        				if ($inside.length !== 0)
        				{
            				for (var key in attr)
                            {
            				    self.inline.removeSpecificAttr($inside, key, attr[key]);
            				}
        				}

                        // same parent
                        var $parent = $el.parent();
                        if ($parent.html() == $el[0].outerHTML)
                        {
                            for (var key in attr)
                            {
            				    self.inline.removeSpecificAttr($parent, key, attr[key]);
            				}
                        }

                        // cache style
                        $el.attr('data-redactor-style-cache', $el.attr('style'));

    				});

    				this.selection.restoreInstant();
				},
				formatCollapsed: function(tag, attr, value, type)
				{
    				var inline = this.selection.inline();
    				if (inline)
					{
                        var currentTag = inline.tagName.toLowerCase();
                        if (currentTag === tag)
						{
							// empty = remove
							if (this.utils.isEmpty(inline.innerHTML))
							{
								this.caret.after(inline);
								$(inline).remove();
							}
							// not empty = break
							else
							{
								var $first = this.inline.insertBreakpoint(inline, currentTag);
								this.caret.after($first);
							}
						}
                        else if ($(inline).closest(tag).length === 0)
                        {
							this.inline.insertInline(tag, attr, value, type);
						}
						else
						{
    						this.caret.start(inline);
						}
    				}
    				else
    				{
                        this.inline.insertInline(tag, attr, value, type);
    				}
				},
                insertBreakpoint: function(inline, currentTag)
				{
					var breakpoint = document.createElement('span');
					breakpoint.id = 'redactor-inline-breakpoint';
					breakpoint = this.insert.node(breakpoint);

					var end = this.utils.isEndOfElement(inline);
					var code = this.utils.getOuterHtml(inline);
					var endTag = (end) ? '' : '<' + currentTag + '>';

					code = code.replace(/<span\sid="redactor-inline-breakpoint">​<\/span>/i, '</' + currentTag + '>' + endTag);
					var $code = $(code);
					$(inline).replaceWith($code);

					if (endTag !== '')
					{
    					this.utils.cloneAttributes(inline, $code.last());
					}

					return $code.first();
				},
				insertInline: function(tag, attr, value, type)
				{
					var node = document.createElement(tag);
					node = this.inline.setAttr(node, attr, value, type);

					this.insert.node(node);
					this.caret.start(node);
				},
                setAttr: function(inline, attr, value, type)
				{
					if (typeof attr === 'undefined')
					{
						return inline;
					}

					var func = (typeof type === 'undefined') ? 'toggle' : type;

					if (attr === 'class')
					{
						inline = this.inline[func + 'Class'](value, inline);
					}
					else
					{
						if (func === 'remove')
						{
							inline = this.inline[func + 'Attr'](attr, inline);
						}
						else if (func === 'removeAll')
						{
							inline = this.inline[func + 'Attr'](inline);
						}
						else
						{
							inline = this.inline[func + 'Attr'](attr, value, inline);

							if (attr === 'style' && inline[0].tagName === 'SPAN')
							{
							    $(inline).attr('data-redactor-span', true);
							}
						}
					}

					return inline;
				},
                getInlines: function(inline)
				{
					return (typeof inline === 'undefined') ? this.selection.inlines() : inline;
				},
				update: function(tag, attr, value, type)
				{
					var inlines = this.selection.inlines();
					var result = [];
					var self = this;

					$.each(inlines, function(i,s)
					{
						if ($.isArray(tag))
						{
							if ($.inArray(s.tagName.toLowerCase(), tag) === -1)
							{
								return;
							}
						}
						else
						{
							if (tag !== '*' && s.tagName.toLowerCase() !== tag)
							{
								return;
							}
						}

						result.push(self.inline.setAttr(s, attr, value, type));

					});

					return result;

				},
				replaceClass: function(value, inline)
				{
					return $(this.inline.getInlines(inline)).removeAttr('class').addClass(value)[0];
				},
				toggleClass: function(value, inline)
				{
					return $(this.inline.getInlines(inline)).toggleClass(value)[0];
				},
				addClass: function(value, inline)
				{
					return $(this.inline.getInlines(inline)).addClass(value)[0];
				},
				removeClass: function(value, inline)
				{
					return $(this.inline.getInlines(inline)).removeClass(value)[0];
				},
				removeAllClass: function(inline)
				{
					return $(this.inline.getInlines(inline)).removeAttr('class')[0];
				},
				replaceAttr: function(inline, attr, value)
				{
					inline = this.inline.removeAttr(attr, this.inline.getInlines(inline));

					return $(inline).attr(attr, value)[0];
				},
				toggleAttr: function(attr, value, inline)
				{
					inline = this.inline.getInlines(inline);

					var self = this;
					var returned = [];
					$.each(inline, function(i,s)
					{
						var $el = $(s);
						if ($el.attr(attr))
						{
							returned.push(self.inline.removeAttr(attr, s));
						}
						else
						{
							returned.push(self.inline.addAttr(attr, value, s));
						}
					});

					return returned;

				},
				addAttr: function(attr, value, inline)
				{
					return $(this.inline.getInlines(inline)).attr(attr, value)[0];
				},
				removeSpecificAttr: function(inline, key, value)
				{
    				if (key === 'style')
    				{
        				var arr = value.split(':');
        				var name = arr[0].trim();
                        $(inline).css(name, '');
                        this.utils.removeEmptyAttr(inline, 'style');
    				}
    				else
    				{
        				$(inline).removeAttr(key)[0];
    				}
				},
				removeAttr: function(attr, inline)
				{
					return $(this.inline.getInlines(inline)).removeAttr(attr)[0];
				},
				removeAllAttr: function(inline)
				{
					inline = this.inline.getInlines(inline);

					var returned = [];
					$.each(inline, function(i, s)
					{
						if (typeof s.attributes === 'undefined')
						{
							returned.push(s);
						}

						var $el = $(s);
						var len = s.attributes.length;
						for (var z = 0; z < len; z++)
						{
							$el.removeAttr(s.attributes[z].name);
						}

						returned.push($el[0]);
					});

					return returned;
				},
				removeFormat: function()
				{
					document.execCommand('removeFormat');
				},
				removeStyleRule: function(name)
				{
					this.buffer.set();
					var parent = this.selection.parent();
					var nodes = this.selection.inlines();

					this.selection.save();

					if (parent && parent.tagName === 'SPAN')
					{
						var $s = $(parent);

						$s.css(name, '');
						$s.removeAttr('data-redactor-span');
						this.utils.removeEmptyAttr($s, 'style');
						if ($s[0].attributes.length === 0)
						{
							$s.replaceWith($s.contents());
						}
					}

					$.each(nodes, $.proxy(function(i,s)
					{
						var $s = $(s);
						if ($.inArray(s.tagName.toLowerCase(), this.opts.inlineTags) != -1 && !$s.hasClass('redactor-selection-marker'))
						{
							$s.css(name, '');
							this.utils.removeEmptyAttr($s, 'style');
							if ($s[0].attributes.length === 0)
							{
								$s.replaceWith($s.contents());
							}
						}
					}, this));

					this.selection.restore();
				}

			};
		},

		// =insert
		insert: function()
		{
			return {
				set: function(html)
				{
					this.placeholder.hide();

					this.code.set(html);
					this.focus.end();

					this.placeholder.enable();
				},
				html: function(html, data)
				{
					this.placeholder.hide();
					this.core.editor().focus();

					var block = this.selection.block();
					var inline = this.selection.inline();

					// clean
					if (typeof data === 'undefined')
					{
						data = this.clean.getCurrentType(html, true);
						html = this.clean.onPaste(html, data, true);
					}

					html = $.parseHTML(html);

					// delete selected content
					var sel = this.selection.get();
					var range = this.selection.range(sel);
					range.deleteContents();

					this.selection.update(sel, range);

					// insert list in list
					if (data.lists)
					{
						var $list = $(html);
						if ($list.length !== 0 && ($list[0].tagName === 'UL' || $list[0].tagName === 'OL'))
						{

							this.insert.appendLists(block, $list);
							return;
						}
					}

					if (data.blocks && block)
					{
						if (this.utils.isSelectAll())
						{
							this.core.editor().html(html);
							this.focus.end();
						}
						else
						{
							var breaked = this.utils.breakBlockTag();
							if (breaked === false)
							{
								this.insert.placeHtml(html);
							}
							else
							{
    							var $last = $(html).children().last();
								$last.append(this.marker.get());

								if (breaked.type === 'start')
								{
									breaked.$block.before(html);
								}
								else
								{
									breaked.$block.after(html);
								}

								this.selection.restore();
								this.core.editor().find('p').each(function()
								{
									if ($.trim(this.innerHTML) === '')
									{
										$(this).remove();
									}
								});
							}
						}
					}
					else
					{
						if (inline)
						{
							// remove same tag inside
							var $div = $("<div/>").html(html);
							$div.find(inline.tagName.toLowerCase()).each(function()
							{
								$(this).contents().unwrap();
							});

							html = $div.html();

						}

						if (this.utils.isSelectAll())
						{
							var $node = $(this.opts.emptyHtml);
							this.core.editor().html('').append($node);
							$node.html(html);
							this.caret.end($node);
						}
						else
						{
							this.insert.placeHtml(html);
						}
					}


					this.utils.disableSelectAll();
					this.linkify.format();

					if (data.pre)
					{
						this.clean.cleanPre();
					}

				},
				text: function(text)
				{
					text = text.toString();
					text = $.trim(text);

					var tmp = document.createElement('div');
					tmp.innerHTML = text;
					text = tmp.textContent || tmp.innerText;

					if (typeof text === 'undefined')
					{
						return;
					}

					this.placeholder.hide();
					this.core.editor().focus();

					// blocks
					var blocks = this.selection.blocks();

					// nl to spaces
					text = text.replace(/\n/g, ' ');

					// select all
					if (this.utils.isSelectAll())
					{
						var $node = $(this.opts.emptyHtml);
						this.core.editor().html('').append($node);
						$node.html(text);
						this.caret.end($node);
					}
					else
					{
						// insert
						var sel = this.selection.get();
						var node = document.createTextNode(text);

						if (sel.getRangeAt && sel.rangeCount)
						{
							var range = sel.getRangeAt(0);
							range.deleteContents();
							range.insertNode(node);
							range.setStartAfter(node);
							range.collapse(true);

							this.selection.update(sel, range);
						}

						// wrap node if selected two or more block tags
						if (blocks.length > 1)
						{
							$(node).wrap('<p>');
							this.caret.after(node);
						}
					}

					this.utils.disableSelectAll();
					this.linkify.format();
					this.clean.normalizeCurrentHeading();

				},
				raw: function(html)
				{
					this.placeholder.hide();
					this.core.editor().focus();

					var sel = this.selection.get();

					var range = this.selection.range(sel);
					range.deleteContents();

		            var el = document.createElement("div");
		            el.innerHTML = html;

		            var frag = document.createDocumentFragment(), node, lastNode;
		            while ((node = el.firstChild))
		            {
		                lastNode = frag.appendChild(node);
		            }

		            range.insertNode(frag);

					if (lastNode)
					{
						range = range.cloneRange();
						range.setStartAfter(lastNode);
						range.collapse(true);
						sel.removeAllRanges();
						sel.addRange(range);
					}
				},
				node: function(node, deleteContent)
				{
					this.placeholder.hide();

					if (typeof this.start !== 'undefined')
					{
						this.core.editor().focus();
					}

					node = node[0] || node;

					var block = this.selection.block();
					var gap = this.utils.isBlockTag(node.tagName);
					var result = true;

					if (this.utils.isSelectAll())
					{
						if (gap)
						{
							this.core.editor().html(node);
						}
						else
						{
							this.core.editor().html($('<p>').html(node));
						}

						this.code.sync();
					}
					else if (gap && block)
					{
						var breaked = this.utils.breakBlockTag();
						if (breaked === false)
						{
							this.insert.placeNode(node, deleteContent);
						}
						else
						{
							if (breaked.type === 'start')
							{
								breaked.$block.before(node);
							}
							else
							{
								breaked.$block.after(node);
							}

							this.core.editor().find('p:empty').remove();
						}
					}
					else
					{
						result = this.insert.placeNode(node, deleteContent);
					}

					this.utils.disableSelectAll();

					if (result)
					{
					    this.caret.end(node);
					}

					return node;

				},
				appendLists: function(block, $list)
				{
					var $block = $(block);
					var last;
					var isEmpty = this.utils.isEmpty(block.innerHTML);

					if (isEmpty || this.utils.isEndOfElement(block))
					{
						last = $block;
						$list.find('li').each(function()
						{
							last.after(this);
							last = $(this);
						});

						if (isEmpty)
						{
							$block.remove();
						}
					}
					else if (this.utils.isStartOfElement(block))
					{
						$list.find('li').each(function()
						{
							$block.before(this);
							last = $(this);
						});
					}
					else
					{
				        var endOfNode = this.selection.extractEndOfNode(block);

				        $block.after($('<li>').append(endOfNode));
				        $block.append($list);
						last = $list;
					}

					this.marker.remove();

					if (last)
					{
						this.caret.end(last);
					}

					this.linkify.format();
				},
				placeHtml: function(html)
				{
					var marker = document.createElement('span');
					marker.id = 'redactor-insert-marker';
					marker = this.insert.node(marker);

					$(marker).before(html);
					this.selection.restore();
					this.caret.after(marker);
					$(marker).remove();
				},
				placeNode: function(node, deleteContent)
				{
					var sel = this.selection.get();
					var range = this.selection.range(sel);
					if (range == null)
					{
    					return false;
					}

					if (deleteContent !== false)
					{
						range.deleteContents();
					}

					range.insertNode(node);
					range.collapse(false);

					this.selection.update(sel, range);
				},
				nodeToPoint: function(e, node)
				{
					this.placeholder.hide();

					node = node[0] || node;

					if (this.utils.isEmpty())
					{
						node = (this.utils.isBlock(node)) ? node : $('<p />').append(node);

						this.core.editor().html(node);

						return node;
					}

					var range;
					var x = e.clientX, y = e.clientY;
					if (document.caretPositionFromPoint)
					{
					    var pos = document.caretPositionFromPoint(x, y);
					    var sel = document.getSelection();
					    range = sel.getRangeAt(0);
					    range.setStart(pos.offsetNode, pos.offset);
					    range.collapse(true);
					    range.insertNode(node);
					}
					else if (document.caretRangeFromPoint)
					{
					    range = document.caretRangeFromPoint(x, y);
					    range.insertNode(node);
					}
					else if (typeof document.body.createTextRange !== "undefined")
					{
				        range = document.body.createTextRange();
				        range.moveToPoint(x, y);
				        var endRange = range.duplicate();
				        endRange.moveToPoint(x, y);
				        range.setEndPoint("EndToEnd", endRange);
				        range.select();
					}

					return node;

				},

				// #backward
				nodeToCaretPositionFromPoint: function(e, node)
				{
					this.insert.nodeToPoint(e, node);
				},
				marker: function()
				{
					this.marker.insert();
				}
			};
		},

		// =keydown
		keydown: function()
		{
			return {
				init: function(e)
				{
					if (this.rtePaste)
					{
						return;
					}

					var key = e.which;
					var arrow = (key >= 37 && key <= 40);

					this.keydown.ctrl = e.ctrlKey || e.metaKey;
					this.keydown.parent = this.selection.parent();
					this.keydown.current = this.selection.current();
					this.keydown.block = this.selection.block();

			        // detect tags
					this.keydown.pre = this.utils.isTag(this.keydown.current, 'pre');
					this.keydown.blockquote = this.utils.isTag(this.keydown.current, 'blockquote');
					this.keydown.figcaption = this.utils.isTag(this.keydown.current, 'figcaption');
					this.keydown.figure = this.utils.isTag(this.keydown.current, 'figure');

					// callback
					var keydownStop = this.core.callback('keydown', e);
					if (keydownStop === false)
					{
						e.preventDefault();
						return false;
					}

					// shortcuts setup
					this.shortcuts.init(e, key);

					// buffer
					this.keydown.checkEvents(arrow, key);
                    this.keydown.setupBuffer(e, key);

					if (this.utils.isSelectAll() && ( key === this.keyCode.ENTER || key === this.keyCode.BACKSPACE || key === this.keyCode.DELETE))
					{
						e.preventDefault();

						this.code.set(this.opts.emptyHtml);

						return;
					}

					this.keydown.addArrowsEvent(arrow);
					this.keydown.setupSelectAll(e, key);

					// turn off enter key
					if (!this.opts.enterKey && key === this.keyCode.ENTER)
					{
						e.preventDefault();

						// remove selected
						var sel = this.selection.get();
						var range = this.selection.range(sel);

						if (!range.collapsed)
						{
							range.deleteContents();
						}

						return;
					}

					// down
					if (this.opts.enterKey && key === this.keyCode.DOWN)
					{
						this.keydown.onArrowDown();
					}

					// up
					if (this.opts.enterKey && key === this.keyCode.UP)
					{
						this.keydown.onArrowUp();
					}


					// replace to p before / after the table or into body
					if ((this.opts.type === 'textarea' || this.opts.type === 'div') && this.keydown.current && this.keydown.current.nodeType === 3 && $(this.keydown.parent).hasClass('redactor-in'))
					{
						this.keydown.wrapToParagraph();
					}

					// on Shift+Space or Ctrl+Space
					if (!this.keyup.lastShiftKey && key === this.keyCode.SPACE && (e.ctrlKey || e.shiftKey))
					{
						e.preventDefault();

						return this.keydown.onShiftSpace();
					}

					// on Shift+Enter or Ctrl+Enter
					if (key === this.keyCode.ENTER && (e.ctrlKey || e.shiftKey))
					{
						e.preventDefault();

						return this.keydown.onShiftEnter(e);
					}

					// on enter
					if (key === this.keyCode.ENTER && !e.shiftKey && !e.ctrlKey && !e.metaKey)
					{
						return this.keydown.onEnter(e);
					}

					// tab or cmd + [
					if (key === this.keyCode.TAB || e.metaKey && key === 221 || e.metaKey && key === 219)
					{
						return this.keydown.onTab(e, key);
					}

                    // firefox bugfix
					if (this.detect.isFirefox() && key === this.keyCode.BACKSPACE && this.keydown.block && this.keydown.block.tagName === 'P' && this.utils.isStartOfElement(this.keydown.block))
					{
    					var $prev = $(this.keydown.block).prev();
    					if ($prev.length !== 0)
    					{
        					e.preventDefault();

        					$prev.append(this.marker.get());
        					$prev.append($(this.keydown.block).html());
        					$(this.keydown.block).remove();

                            this.selection.restore();

        					return;
    					}
					}

					// backspace & delete
					if (key === this.keyCode.BACKSPACE || key === this.keyCode.DELETE)
					{
    					if (this.observe.image && typeof this.observe.image !== 'undefined' && $('#redactor-image-box').length !== 0)
    					{
        					e.preventDefault();

        					var $prev = this.observe.image.closest('figure, p').prev()
        					this.image.remove(false);
                            this.observe.image = false;

        					if ($prev && $prev.length !== 0)
        					{
            					this.caret.end($prev);
        					}
        					else
        					{
            					this.core.editor().focus();
        					}

        					return;
    					}

						this.keydown.onBackspaceAndDeleteBefore();
					}

					if (key === this.keyCode.DELETE)
					{
						var $next = $(this.keydown.block).next();

						// delete figure
						if (this.utils.isEndOfElement(this.keydown.block) && $next.length !== 0 && $next[0].tagName === 'FIGURE')
						{
							$next.remove();
							return false;
						}

						// append list (safari bug)
						var tagLi = (this.keydown.block && this.keydown.block.tagName === 'LI') ? this.keydown.block : false;
						if (tagLi)
						{
							var $list = $(this.keydown.block).parents('ul, ol').last();
							var $nextList = $list.next();

							if (this.utils.isRedactorParent($list) && this.utils.isEndOfElement($list) && $nextList.length !== 0
								&& ($nextList[0].tagName === 'UL' || $nextList[0].tagName === 'OL'))
							{
								e.preventDefault();

								$list.append($nextList.contents());
								$nextList.remove();

								return false;
							}
						}

						// append pre
						if (this.utils.isEndOfElement(this.keydown.block) && $next.length !== 0 && $next[0].tagName === 'PRE')
						{
							$(this.keydown.block).append($next.text());
							$next.remove();
							return false;
						}

					}

					// image delete
					if (key === this.keyCode.DELETE && $('#redactor-image-box').length !== 0)
					{
						this.image.remove();
					}

					// backspace
					if (key === this.keyCode.BACKSPACE)
					{
						if (this.detect.isFirefox())
						{
							this.line.removeOnBackspace(e);
						}

                        // combine list after and before if paragraph is empty
                        if (this.list.combineAfterAndBefore(this.keydown.block))
                        {
                            e.preventDefault();
                            return;
                        }

						// backspace as outdent
						var block = this.selection.block();
						if (block && block.tagName === 'LI' && this.utils.isCollapsed() && this.utils.isStartOfElement())
						{
							this.indent.decrease();
							e.preventDefault();
							return;
						}

						this.keydown.removeInvisibleSpace();
						this.keydown.removeEmptyListInTable(e);

					}

					if (key === this.keyCode.BACKSPACE || key === this.keyCode.DELETE)
					{
						this.keydown.onBackspaceAndDeleteAfter(e);
					}

				},
				onShiftSpace: function()
				{
					this.buffer.set();
					this.insert.raw('&nbsp;');

					return false;
				},
				onShiftEnter: function(e)
				{
					this.buffer.set();

					return (this.keydown.pre) ? this.keydown.insertNewLine(e) : this.insert.raw('<br>');
				},
				onBackspaceAndDeleteBefore: function()
				{
					this.utils.saveScroll();
				},
				onBackspaceAndDeleteAfter: function(e)
				{
					// remove style tag
					setTimeout($.proxy(function()
					{
						this.code.syncFire = false;
						this.keydown.removeEmptyLists();

						this.core.editor().find('*[style]').not('img, figure, #redactor-image-box, #redactor-image-editter, [data-redactor-span]').removeAttr('style');

						this.keydown.formatEmpty(e);
						this.code.syncFire = true;

					}, this), 1);
				},
				onEnter: function(e)
				{
					var stop = this.core.callback('enter', e);
					if (stop === false)
					{
						e.preventDefault();
						return false;
					}

					// blockquote exit
					if (this.keydown.blockquote && this.keydown.exitFromBlockquote(e) === true)
					{
						return false;
					}

					// pre
					if (this.keydown.pre)
					{
						return this.keydown.insertNewLine(e);
					}
					// blockquote & figcaption
					else if (this.keydown.blockquote || this.keydown.figcaption)
					{
						return this.keydown.insertBreakLine(e);
					}
					// figure
					else if (this.keydown.figure)
					{
						setTimeout($.proxy(function()
						{
							this.keydown.replaceToParagraph('FIGURE');

						}, this), 1);
					}
					// paragraphs
					else if (this.keydown.block)
					{
						setTimeout($.proxy(function()
						{
							this.keydown.replaceToParagraph('DIV');

						}, this), 1);

						// empty list exit
						if (this.keydown.block.tagName === 'LI')
						{
							var current = this.selection.current();
							var $parent = $(current).closest('li', this.$editor[0]);
							var $list = $parent.parents('ul,ol', this.$editor[0]).last();

							if ($parent.length !== 0 && this.utils.isEmpty($parent.html()) && $list.next().length === 0 && this.utils.isEmpty($list.find("li").last().html()))
							{
								$list.find("li").last().remove();

								var node = $(this.opts.emptyHtml);
								$list.after(node);
								this.caret.start(node);

								return false;
							}
						}

					}
					// outside
					else if (!this.keydown.block)
					{
						return this.keydown.insertParagraph(e);
					}

                    // firefox enter into inline element
					if (this.detect.isFirefox() && this.utils.isInline(this.keydown.parent))
					{
                        this.keydown.insertBreakLine(e);
                        return;
                    }


					// remove inline tags in new-empty paragraph
					setTimeout($.proxy(function()
					{
						var inline = this.selection.inline();
						if (inline && this.utils.isEmpty(inline.innerHTML))
						{
							var parent = this.selection.block();
							$(inline).remove();
							//this.caret.start(parent);

                            var range = document.createRange();
                            range.setStart(parent, 0);

                            var textNode = document.createTextNode('\u200B');

                            range.insertNode(textNode);
                            range.setStartAfter(textNode);
                            range.collapse(true);

                            var sel = window.getSelection();
            				sel.removeAllRanges();
            				sel.addRange(range);
						}


					}, this), 1);
				},
				checkEvents: function(arrow, key)
				{
					if (!arrow && (this.core.getEvent() === 'click' || this.core.getEvent() === 'arrow'))
					{
						this.core.addEvent(false);

						if (this.keydown.checkKeyEvents(key))
						{
							this.buffer.set();
						}
					}
				},
				checkKeyEvents: function(key)
				{
					var k = this.keyCode;
					var keys = [k.BACKSPACE, k.DELETE, k.ENTER, k.ESC, k.TAB, k.CTRL, k.META, k.ALT, k.SHIFT];

					return ($.inArray(key, keys) === -1) ? true : false;

				},
				addArrowsEvent: function(arrow)
				{
					if (!arrow)
					{
						return;
					}

					if ((this.core.getEvent() === 'click' || this.core.getEvent() === 'arrow'))
					{
						this.core.addEvent(false);
						return;
					}

				    this.core.addEvent('arrow');
				},
				setupBuffer: function(e, key)
				{
					if (this.keydown.ctrl && key === 90 && !e.shiftKey && !e.altKey && this.opts.buffer.length) // z key
					{
						e.preventDefault();
						this.buffer.undo();
						return;
					}
					// redo
					else if (this.keydown.ctrl && key === 90 && e.shiftKey && !e.altKey && this.opts.rebuffer.length !== 0)
					{
						e.preventDefault();
						this.buffer.redo();
						return;
					}
					else if (!this.keydown.ctrl)
					{
						if (key === this.keyCode.SPACE || key === this.keyCode.BACKSPACE || key === this.keyCode.DELETE || (key === this.keyCode.ENTER && !e.ctrlKey && !e.shiftKey))
						{
							this.buffer.set();
						}
					}
				},
				exitFromBlockquote: function(e)
				{

					if (!this.utils.isEndOfElement(this.keydown.blockquote))
					{
						return;
					}

					var tmp = this.clean.removeSpacesHard($(this.keydown.blockquote).html());
					if (tmp.search(/(<br\s?\/?>){3}$/i) !== -1)
					{
						e.preventDefault();

						var $last = $(this.keydown.blockquote).children().last().prev();

						$last.prev().filter('br').remove();
						$last.filter('br').remove();
						$(this.keydown.blockquote).children().last().filter('br').remove();
						$(this.keydown.blockquote).children().last().filter('span').remove();

						var node = $(this.opts.emptyHtml);
						$(this.keydown.blockquote).after(node);
						this.caret.start(node);

						return true;

					}

					return;

				},
				onArrowDown: function()
				{
					var tags = [this.keydown.blockquote, this.keydown.pre, this.keydown.figcaption];

					for (var i = 0; i < tags.length; i++)
					{
						if (tags[i])
						{
							this.keydown.insertAfterLastElement(tags[i]);
							return false;
						}
					}
				},
				onArrowUp: function()
				{
					var tags = [this.keydown.blockquote, this.keydown.pre, this.keydown.figcaption];

					for (var i = 0; i < tags.length; i++)
					{
						if (tags[i])
						{
							this.keydown.insertBeforeFirstElement(tags[i]);
							return false;
						}
					}
				},
				insertAfterLastElement: function(element)
				{
					if (!this.utils.isEndOfElement(element))
					{
						return;
					}

					var last = this.core.editor().contents().last();
					var $next = (element.tagName === 'FIGCAPTION') ? $(this.keydown.block).parent().next() : $(this.keydown.block).next();

					if ($next.length !== 0)
					{
						return;
					}
					else if (last.length === 0 && last[0] !== element)
					{
						this.caret.start(last);
						return;
					}
					else
					{
						var node = $(this.opts.emptyHtml);

						if (element.tagName === 'FIGCAPTION')
						{
						    $(element).parent().after(node);
						}
						else
						{
    						$(element).after(node);
						}

						this.caret.start(node);
					}

				},
				insertBeforeFirstElement: function(element)
				{
					if (!this.utils.isStartOfElement())
					{
						return;
					}

					if (this.core.editor().contents().length > 1 && this.core.editor().contents().first()[0] !== element)
					{
						return;
					}

					var node = $(this.opts.emptyHtml);
					$(element).before(node);
					this.caret.start(node);

				},
				onTab: function(e, key)
				{
					if (!this.opts.tabKey)
					{
						return true;
					}

					var isList = (this.keydown.block && this.keydown.block.tagName === 'LI')
					if (this.utils.isEmpty(this.code.get()) || (!isList && !this.keydown.pre && this.opts.tabAsSpaces === false))
					{
						return true;
					}

					e.preventDefault();
					this.buffer.set();

                    var isListStart = (isList && this.utils.isStartOfElement(this.keydown.block));
					var node;

					if (this.keydown.pre && !e.shiftKey)
					{
						node = (this.opts.preSpaces) ? document.createTextNode(Array(this.opts.preSpaces + 1).join('\u00a0')) : document.createTextNode('\t');
						this.insert.node(node);
					}
					else if (this.opts.tabAsSpaces !== false && !isListStart)
					{
						node = document.createTextNode(Array(this.opts.tabAsSpaces + 1).join('\u00a0'));
						this.insert.node(node);
					}
					else
					{
						if (e.metaKey && key === 219)
						{
							this.indent.decrease();
						}
						else if (e.metaKey && key === 221)
						{
							this.indent.increase();
						}
						else if (!e.shiftKey)
						{
							this.indent.increase();
						}
						else
						{
							this.indent.decrease();
						}
					}

					return false;
				},
				setupSelectAll: function(e, key)
				{
					if (this.keydown.ctrl && key === 65)
					{
						this.utils.enableSelectAll();
					}
					else if (key !== this.keyCode.LEFT_WIN && !this.keydown.ctrl)
					{
						this.utils.disableSelectAll();
					}
				},
				insertNewLine: function(e)
				{
					e.preventDefault();

					var node = document.createTextNode('\n');

					var sel = this.selection.get();
					var range = this.selection.range(sel);

					range.deleteContents();
					range.insertNode(node);

					this.caret.after(node);

					return false;
				},
				insertParagraph: function(e)
				{
					e.preventDefault();

					var p = document.createElement('p');
					p.innerHTML = this.opts.invisibleSpace;

					var sel = this.selection.get();
					var range = this.selection.range(sel);

					range.deleteContents();
					range.insertNode(p);

					this.caret.start(p);

					return false;
				},
				insertBreakLine: function(e)
				{
					return this.keydown.insertBreakLineProcessing(e);
				},
				insertDblBreakLine: function(e)
				{
					return this.keydown.insertBreakLineProcessing(e, true);
				},
				insertBreakLineProcessing: function(e, dbl)
				{
					e.stopPropagation();

					var br1 = document.createElement('br');
					this.insert.node(br1);

					if (dbl === true)
					{
						var br2 = document.createElement('br');
						this.insert.node(br2);
					}

					return false;

				},
				wrapToParagraph: function()
				{
					var $current = $(this.keydown.current);
					var	node = $('<p>').append($current.clone());
					$current.replaceWith(node);


					var next = $(node).next();
					if (typeof(next[0]) !== 'undefined' && next[0].tagName === 'BR')
					{
						next.remove();
					}

					this.caret.end(node);

				},
				replaceToParagraph: function(tag)
				{
					var blockElem = this.selection.block();
					var $prev = $(blockElem).prev();

					var blockHtml = blockElem.innerHTML.replace(/<br\s?\/?>/gi, '');
					if (blockElem.tagName === tag && this.utils.isEmpty(blockHtml) && !$(blockElem).hasClass('redactor-in'))
					{
						var p = document.createElement('p');
						$(blockElem).replaceWith(p);

                        this.keydown.setCaretToParagraph(p);

						return false;
					}
					else if (blockElem.tagName === 'P')
					{
						$(blockElem).removeAttr('class').removeAttr('style');

						// fix #227
						if (this.detect.isIe() && this.utils.isEmpty(blockHtml) && this.utils.isInline(this.keydown.parent))
                        {
                            $(blockElem).on('input', $.proxy(function()
                            {
                                var parent = this.selection.parent();
                                if (this.utils.isInline(parent))
                                {
                                    var html = $(parent).html();
                                    $(blockElem).html(html);
                                    this.caret.end(blockElem);
                                }

                                $(blockElem).off('keyup');

                            }, this));
						}

						return false;
					}
					else if ($prev.hasClass(this.opts.videoContainerClass))
					{
    					$prev.removeAttr('class');

    					var p = document.createElement('p');
						$prev.replaceWith(p);

						this.keydown.setCaretToParagraph(p);

						return false;
					}
				},
				setCaretToParagraph: function(p)
				{
                    var range = document.createRange();
                    range.setStart(p, 0);

                    var textNode = document.createTextNode('\u200B');

                    range.insertNode(textNode);
                    range.setStartAfter(textNode);
                    range.collapse(true);

                    var sel = window.getSelection();
    				sel.removeAllRanges();
    				sel.addRange(range);
				},
				removeInvisibleSpace: function()
				{
					var $current = $(this.keydown.current);
					if ($current.text().search(/^\u200B$/g) === 0)
					{
						$current.remove();
					}
				},
				removeEmptyListInTable: function(e)
				{
					var $current = $(this.keydown.current);
					var $parent = $(this.keydown.parent);
					var td = $current.closest('td', this.$editor[0]);

					if (td.length !== 0 && $current.closest('li', this.$editor[0]) && $parent.children('li').length === 1)
					{
						if (!this.utils.isEmpty($current.text()))
						{
							return;
						}

						e.preventDefault();

						$current.remove();
						$parent.remove();

						this.caret.start(td);
					}
				},
				removeEmptyLists: function()
				{
					var removeIt = function()
					{
						var html = $.trim(this.innerHTML).replace(/\/t\/n/g, '');
						if (html === '')
						{
							$(this).remove();
						}
					};

					this.core.editor().find('li').each(removeIt);
					this.core.editor().find('ul, ol').each(removeIt);
				},
				formatEmpty: function(e)
				{
					var html = $.trim(this.core.editor().html());

					if (!this.utils.isEmpty(html))
					{
						return;
					}

					e.preventDefault();

					if (this.opts.type === 'inline' || this.opts.type === 'pre')
					{
						this.core.editor().html(this.marker.html());
						this.selection.restore();
					}
					else
					{
						this.core.editor().html(this.opts.emptyHtml);
						this.focus.start();
					}

					return false;

				}
			};
		},

		// =keyup
		keyup: function()
		{
			return {
				init: function(e)
				{
					if (this.rtePaste)
					{
						return;
					}

					var key = e.which;
					this.keyup.block = this.selection.block();
					this.keyup.current = this.selection.current();
					this.keyup.parent = this.selection.parent();
					this.keyup.lastShiftKey = e.shiftKey;


					// callback
					var stop = this.core.callback('keyup', e);
					if (stop === false)
					{
						e.preventDefault();
						return false;
					}

                    // replace a prev figure to paragraph if caret is before image
                    if (key === this.keyCode.ENTER)
                    {
                        if (this.keyup.block && this.keyup.block.tagName === 'FIGURE')
                        {
                            var $prev = $(this.keyup.block).prev();
                            if ($prev.length !== 0 && $prev[0].tagName === 'FIGURE')
                            {
                                var $newTag = this.utils.replaceToTag($prev, 'p');
                                this.caret.start($newTag);
                                return;
                            }
                        }
                    }

					// replace figure to paragraph
					if (key === this.keyCode.BACKSPACE || key === this.keyCode.DELETE)
					{
						if (this.utils.isSelectAll())
						{
							this.focus.start();

							return;
						}


						// if caret before figure - delete image
						if (this.keyup.block && this.keydown.block && this.keyup.block.tagName === 'FIGURE' && this.utils.isStartOfElement(this.keydown.block))
						{
    						e.preventDefault();

                            this.selection.save();
                            $(this.keyup.block).find('figcaption').remove();
    						$(this.keyup.block).find('img').first().remove();
    						this.utils.replaceToTag(this.keyup.block, 'p');

    						var $marker = this.marker.find();
    						$('html, body').animate({ scrollTop: $marker.position().top + 20 }, 500);

    						this.selection.restore();
    						return;
						}


						// if paragraph does contain only image replace to figure
						if (this.keyup.block && this.keyup.block.tagName === 'P')
						{
							var isContainImage = $(this.keyup.block).find('img').length;
							var text = $(this.keyup.block).text().replace(/\u200B/g, '');
							if (text === '' && isContainImage !== 0)
							{
								this.utils.replaceToTag(this.keyup.block, 'figure');
							}
						}

						// if figure does not contain image - replace to paragraph
						if (this.keyup.block && this.keyup.block.tagName === 'FIGURE' && $(this.keyup.block).find('img').length === 0)
						{
							this.selection.save();
							this.utils.replaceToTag(this.keyup.block, 'p');
							this.selection.restore();
						}
					}

					// linkify
					if (this.linkify.isKey(key))
					{
						this.linkify.format();
					}

				}

			};
		},

		// =lang
		lang: function()
		{
			return {
				load: function()
				{
					this.opts.curLang = this.opts.langs[this.opts.lang];
				},
				get: function(name)
				{
					return (typeof this.opts.curLang[name] !== 'undefined') ? this.opts.curLang[name] : '';
				}
			};
		},

		// =line
		line: function()
		{
			return {
				insert: function()
				{
					this.buffer.set();

					// insert
					this.insert.html(this.line.getLineHtml());

					// find
					var $hr = this.core.editor().find('#redactor-hr-tmp-id');
					$hr.removeAttr('id');

					this.core.callback('insertedLine', $hr);

					return $hr;
				},
				getLineHtml: function()
				{
					var html = '<hr id="redactor-hr-tmp-id" />';
					if (!this.detect.isFirefox() && this.utils.isEmpty())
					{
						html += '<p>' + this.opts.emptyHtml + '</p>';
					}

					return html;
				},
				// ff only
				removeOnBackspace: function(e)
				{
					if (!this.utils.isCollapsed())
					{
						return;
					}

					var $block = $(this.selection.block());
					if ($block.length === 0 || !this.utils.isStartOfElement($block))
					{
						return;
					}

					// if hr is previous element
					var $prev = $block.prev();
					if ($prev && $prev.length !== 0 && $prev[0].tagName === 'HR')
					{
						e.preventDefault();
						$prev.remove();
					}
				}
			};
		},

		// =link
		link: function()
		{
			return {

				// public
				get: function()
				{
					return $(this.selection.inlines('a'));
				},
				is: function()
				{
					var nodes = this.selection.nodes() ;
					var $link = $(this.selection.current()).closest('a', this.core.editor()[0]);

					return ($link.length === 0 || nodes.length > 1) ? false : $link;
				},
				unlink: function(e)
				{
					// if call from clickable element
					if (typeof e !== 'undefined' && e.preventDefault)
					{
						e.preventDefault();
					}

					// buffer
					this.buffer.set();

					var links = this.selection.inlines('a');
					if (links.length === 0)
					{
						return;
					}

					var $links = this.link.replaceLinksToText(links);

					this.observe.closeAllTooltip();
					this.core.callback('deletedLink', $links);

				},
				insert: function(link, cleaned)
				{
					var $el = this.link.is();

					if (cleaned !== true)
					{
						link = this.link.buildLinkFromObject($el, link);
						if (link === false)
						{
							return false;
						}
					}

					// buffer
					this.buffer.set();

					// callback
					link = this.core.callback('beforeInsertingLink', link);

					if ($el === false)
					{
						// insert
						$el = $('<a />');
						$el = this.link.update($el, link);
						$el = $(this.insert.node($el));

						var $parent = $el.parent();
						if (this.utils.isRedactorParent($parent) === false)
						{
							$el.wrap('<p>');
						}

						// remove unlink wrapper
						if ($parent.hasClass('redactor-unlink'))
						{
							$parent.replaceWith(function(){
								return $(this).contents();
							});
						}

						this.caret.after($el);
						this.core.callback('insertedLink', $el);
					}
					else
					{
						// update
						$el = this.link.update($el, link);
						this.caret.after($el);
					}

				},
				update: function($el, link)
				{
					$el.text(link.text);
					$el.attr('href', link.url);

					this.link.target($el, link.target);

					return $el;

				},
				target: function($el, target)
				{
					return (target) ? $el.attr('target', '_blank') : $el.removeAttr('target');
				},
				show: function(e)
				{
					// if call from clickable element
					if (typeof e !== 'undefined' && e.preventDefault)
					{
						e.preventDefault();
					}

					// close tooltip
					this.observe.closeAllTooltip();

					// is link
					var $el = this.link.is();

					// build modal
					this.link.buildModal($el);

					// build link
					var link = this.link.buildLinkFromElement($el);

					// if link cut & paste inside editor browser added self host to a link
					link.url = this.link.removeSelfHostFromUrl(link.url);

                    // new tab target
					if (this.opts.linkNewTab && !$el)
					{
    					link.target = true;
					}

					// set modal values
					this.link.setModalValues(link);

					// show modal
					this.modal.show();

					// focus
					if (this.detect.isDesktop())
					{
						$('#redactor-link-url').focus();
					}
				},

				// private
				setModalValues: function(link)
				{
					$('#redactor-link-blank').prop('checked', link.target);
					$('#redactor-link-url').val(link.url);
					$('#redactor-link-url-text').val(link.text);
				},
				buildModal: function($el)
				{
					this.modal.load('link', this.lang.get(($el === false) ? 'link-insert' : 'link-edit'), 600);

					// button insert
					var $btn = this.modal.getActionButton();
					$btn.text(this.lang.get(($el === false) ? 'insert' : 'save')).on('click', $.proxy(this.link.callback, this));

				},
				callback: function()
				{
					// build link
					var link = this.link.buildLinkFromModal();
					if (link === false)
					{
						return false;
					}

					// close
					this.modal.close();

					// insert or update
					this.link.insert(link, true);
				},
				cleanUrl: function(url)
				{
					return (typeof url === 'undefined') ? '' : $.trim(url.replace(/[^\W\w\D\d+&\'@#/%?=~_|!:,.;\(\)]/gi, ''));
				},
				cleanText: function(text)
				{
					return (typeof text === 'undefined') ? '' :$.trim(text.replace(/(<([^>]+)>)/gi, ''));
				},
				getText: function(link)
				{
					return (link.text === '' && link.url !== '') ? this.link.truncateUrl(link.url.replace(/<|>/g, '')) : link.text;
				},
				isUrl: function(url)
				{
					var pattern = '((xn--)?[\\W\\w\\D\\d]+(-[\\W\\w\\D\\d]+)*\\.)+[\\W\\w]{2,}';

					var re1 = new RegExp('^(http|ftp|https)://' + pattern, 'i');
					var re2 = new RegExp('^' + pattern, 'i');
					var re3 = new RegExp('\.(html|php)$', 'i');
					var re4 = new RegExp('^/', 'i');
					var re5 = new RegExp('^tel:(.*?)', 'i');

					// add protocol
					if (url.search(re1) === -1 && url.search(re2) !== -1 && url.search(re3) === -1 && url.substring(0, 1) !== '/')
					{
						url = 'http://' + url;
					}

					if (url.search(re1) !== -1 || url.search(re3) !== -1 || url.search(re4) !== -1 || url.search(re5) !== -1)
					{
						return url;
					}

					return false;
				},
				isMailto: function(url)
				{
					return (url.search('@') !== -1 && /(http|ftp|https):\/\//i.test(url) === false);
				},
				isEmpty: function(link)
				{
					return (link.url === '' || (link.text === '' && link.url === ''));
				},
				truncateUrl: function(url)
				{
					return (url.length > this.opts.linkSize) ? url.substring(0, this.opts.linkSize) + '...' : url;
				},
				parse: function(link)
				{
					// mailto
					if (this.link.isMailto(link.url))
					{
						link.url = 'mailto:' + link.url.replace('mailto:', '');
					}
					// url
					else if (link.url.search('#') !== 0)
					{
						link.url = this.link.isUrl(link.url);
					}

					// empty url or text or isn't url
					return (this.link.isEmpty(link) || link.url === false) ? false : link;

				},
				buildLinkFromModal: function()
				{
					var link = {};

					// url
					link.url = this.link.cleanUrl($('#redactor-link-url').val());

					// text
					link.text = this.link.cleanText($('#redactor-link-url-text').val());
					link.text = this.link.getText(link);

					// target
					link.target = ($('#redactor-link-blank').prop('checked')) ? true : false;

					// parse
					return this.link.parse(link);

				},
				buildLinkFromObject: function($el, link)
				{
					// url
					link.url = this.link.cleanUrl(link.url);

					// text
					link.text = (typeof link.text === 'undefined' && this.selection.is()) ? this.selection.text() : this.link.cleanText(link.text);
					link.text = this.link.getText(link);

					// target
					link.target = ($el === false) ? link.target : this.link.buildTarget($el);

					// parse
					return this.link.parse(link);

				},
				buildLinkFromElement: function($el)
				{
					var link = {
						url: '',
						text: (this.selection.is()) ? this.selection.text() : '',
						target: false
					};

					if ($el !== false)
					{
						link.url = $el.attr('href');
						link.text = $el.text();
						link.target = this.link.buildTarget($el);
					}

					return link;
				},
				buildTarget: function($el)
				{
					return (typeof $el.attr('target') !== 'undefined' && $el.attr('target') === '_blank') ? true : false;
				},
				removeSelfHostFromUrl: function(url)
				{
					var href = self.location.href.replace('#', '').replace(/\/$/i, '');
					return url.replace(/^\/\#/, '#').replace(href, '').replace('mailto:', '');
				},
				replaceLinksToText: function(links)
				{
					var $first;
					var $links = $.each(links, function(i,s)
					{
						var $el = $(s);
						var $unlinked = $('<span class="redactor-unlink" />').append($el.contents());
						$el.replaceWith($unlinked);

						if (i === 0)
						{
							$first = $unlinked;
						}

						return $el;
					});

					// set caret after unlinked node
					if (links.length === 1 && this.selection.isCollapsed())
					{
						this.caret.after($first);
					}

					return $links;
				}
			};
		},

		// =linkify
		linkify: function()
		{
			return {
				isKey: function(key)
				{
					return key === this.keyCode.ENTER || key === this.keyCode.SPACE;
				},
				isLink: function(node)
				{
					return (node.nodeValue.match(this.opts.regexps.linkyoutube) || node.nodeValue.match(this.opts.regexps.linkvimeo) || node.nodeValue.match(this.opts.regexps.linkimage) || node.nodeValue.match(this.opts.regexps.url));
				},
				isFiltered: function(i, node)
				{
					return node.nodeType === 3 && $.trim(node.nodeValue) !== "" && !$(node).parent().is("pre") && (this.linkify.isLink(node));
				},
				handler: function(i, node)
				{
					var $el = $(node);
					var text = $el.text();
					var html = text;

					if (html.match(this.opts.regexps.linkyoutube) || html.match(this.opts.regexps.linkvimeo))
					{
						html = this.linkify.convertVideoLinks(html);
					}
					else if (html.match(this.opts.regexps.linkimage))
					{
						html = this.linkify.convertImages(html);
					}
					else
					{
						html = this.linkify.convertLinks(html);
					}

					$el.before(text.replace(text, html)).remove();
				},
				format: function()
				{
					if (!this.opts.linkify || this.utils.isCurrentOrParent('pre'))
					{
						return;
					}


					this.core.editor().find(":not(iframe,img,a,pre,code,.redactor-unlink)").addBack().contents().filter($.proxy(this.linkify.isFiltered, this)).each($.proxy(this.linkify.handler, this));

					// collect
					var $objects = this.core.editor().find('.redactor-linkify-object').each($.proxy(function(i,s)
					{
						var $el = $(s);
						$el.removeClass('redactor-linkify-object');
						if ($el.attr('class') === '')
						{
							$el.removeAttr('class');
						}

						if (s.tagName === 'DIV') // video container
						{
							this.linkify.breakBlockTag($el, 'video');
						}
						else if (s.tagName === 'IMG') // image
						{
							this.linkify.breakBlockTag($el, 'image');
						}
						else if (s.tagName === 'A')
						{
							this.core.callback('insertedLink', $el);
						}

						return $el;

					}, this));

					// callback
					setTimeout($.proxy(function()
					{
						this.code.sync();
						this.core.callback('linkify', $objects);

					}, this), 100);

				},
				breakBlockTag: function($el, type)
				{
					var breaked = this.utils.breakBlockTag();
					if (breaked === false)
					{
						return;
					}

					var $newBlock = $el;
					if (type === 'image')
					{
						$newBlock = $('<figure />').append($el);
					}

					if (breaked.type === 'start')
					{
						breaked.$block.before($newBlock);
					}
					else
					{
						breaked.$block.after($newBlock);
					}


					if (type === 'image')
					{
						this.caret.after($newBlock);
					}

				},
				convertVideoLinks: function(html)
				{
					var iframeStart = '<div class="' + this.opts.videoContainerClass + ' redactor-linkify-object"><iframe class="redactor-linkify-object" width="500" height="281" src="';
					var iframeEnd = '" frameborder="0" allowfullscreen></iframe></div>';

					if (html.match(this.opts.regexps.linkyoutube))
					{
						html = html.replace(this.opts.regexps.linkyoutube, iframeStart + '//www.youtube.com/embed/$1' + iframeEnd);
					}

					if (html.match(this.opts.regexps.linkvimeo))
					{
						html = html.replace(this.opts.regexps.linkvimeo, iframeStart + '//player.vimeo.com/video/$2' + iframeEnd);
					}

					return html;
				},
				convertImages: function(html)
				{
					var matches = html.match(this.opts.regexps.linkimage);
					if (!matches)
					{
						return html;
					}

					return html.replace(html, '<img src="' + matches + '" class="redactor-linkify-object" />');
				},
				convertLinks: function(html)
				{
					var matches = html.match(this.opts.regexps.url);
					if (!matches)
					{
						return html;
					}

					matches = $.grep(matches, function(v, k) { return $.inArray(v, matches) === k; });

					var length = matches.length;

					for (var i = 0; i < length; i++)
					{
						var href = matches[i], text = href;
						var linkProtocol = (href.match(/(https?|ftp):\/\//i) !== null) ? '' : 'http://';

						if (text.length > this.opts.linkSize)
						{
							text = text.substring(0, this.opts.linkSize) + '...';
						}

						if (text.search('%') === -1)
						{
							text = decodeURIComponent(text);
						}

						var regexB = "\\b";

						if ($.inArray(href.slice(-1), ["/", "&", "="]) !== -1)
						{
							regexB = "";
						}

						// escaping url
						var regexp = new RegExp('(' + href.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&") + regexB + ')', 'g');

						html = html.replace(regexp, '<a href="' + linkProtocol + $.trim(href) + '" class="redactor-linkify-object">' + $.trim(text) + '</a>');
					}

					return html;
				}
			};
		},

		// =list
		list: function()
		{
			return {
				toggle: function(cmd)
				{
					if (this.utils.inBlocks(['table', 'td', 'th', 'tr']))
					{
						return;
					}

					var tag = (cmd === 'orderedlist' || cmd === 'ol') ? 'OL' : 'UL';
					cmd = (tag === 'OL') ? 'orderedlist' : 'unorderedlist'

					var $list = $(this.selection.current()).parentsUntil('.redactor-in', 'ul, ol').first();

					this.placeholder.hide();
					this.buffer.set();


					if ($list.length !== 0 && $list[0].tagName === tag && this.utils.isRedactorParent($list))
					{
						this.selection.save();

						// remove list
						$list.find('ul, ol').each(function()
						{
							var parent = $(this).closest('li');
							$(this).find('li').each(function()
							{
								$(parent).after(this);
							});
						});

						$list.find('ul, ol').remove();
						$list.find('li').each(function()
						{
							return $(this).replaceWith(function()
							{
								return $('<p />').append($(this).contents());
							});
						});


						$list.replaceWith(function()
						{
							return $(this).contents();
						});

						this.selection.restore();
						return;
					}


					this.selection.save();

					if ($list.length !== 0 && $list[0].tagName !== tag)
					{
                        $list.each($.proxy(function(i,s)
                        {
                            this.utils.replaceToTag(s, tag);

                        }, this));
					}
					else
					{
					    document.execCommand('insert' + cmd);
					}

					this.selection.restore();

					var $insertedList = this.list.get();
					if (!$insertedList)
					{
						if (!this.selection.block())
						{
							document.execCommand('formatblock', false, 'p');
						}

						return;
					}

					// clear span
					$insertedList.find('span').replaceWith(function()
					{
						return $(this).contents();
					});

					// remove style
					$insertedList.find(this.opts.inlineTags.join(',')).each(function()
					{
						$(this).removeAttr('style');
					});

					// remove block-element list wrapper
					var $listParent = $insertedList.parent();
					if (this.utils.isRedactorParent($listParent) && $listParent[0].tagName !== 'LI' && this.utils.isBlock($listParent))
					{
						this.selection.save();

						$listParent.replaceWith($listParent.contents());

						this.selection.restore();
					}

				},
				get: function()
				{
					var current = this.selection.current();
					var $list = $(current).closest('ul, ol', this.core.editor()[0]);

					return ($list.length === 0) ? false : $list;
				},
				combineAfterAndBefore: function(block)
				{
    				var $prev = $(block).prev();
    				var $next = $(block).next();
                    var isEmptyBlock = (block && block.tagName === 'P' && (block.innerHTML === '<br>' || block.innerHTML === ''));
                    var isBlockWrapped = ($prev.closest('ol, ul', this.core.editor()[0]).length === 1 && $next.closest('ol, ul', this.core.editor()[0]).length === 1);

                    if (isEmptyBlock && isBlockWrapped)
                    {
                        $prev.children('li').last().append(this.marker.get());
                        $prev.append($next.contents());
                        this.selection.restore();

                        return true;
                    }

                    return false;

				}
			};
		},

		// =marker
		marker: function()
		{
			return {

				// public
				get: function(num)
				{
					num = (typeof num === 'undefined') ? 1 : num;

					var marker = document.createElement('span');

					marker.id = 'selection-marker-' + num;
					marker.className = 'redactor-selection-marker';
					marker.innerHTML = this.opts.invisibleSpace;

					return marker;
				},
				html: function(num)
				{
					return this.utils.getOuterHtml(this.marker.get(num));
				},
				find: function(num)
				{
					num = (typeof num === 'undefined') ? 1 : num;

					return this.core.editor().find('span#selection-marker-' + num);
				},
				insert: function()
				{
					var sel = this.selection.get();
					var range = this.selection.range(sel);

					this.marker.insertNode(range, this.marker.get(1), true);
					if (range && range.collapsed === false)
					{
						this.marker.insertNode(range, this.marker.get(2), false);
					}

				},
				remove: function()
				{
					this.core.editor().find('.redactor-selection-marker').each(this.marker.iterateRemove);
				},

				// private
				insertNode: function(range, node, collapse)
				{
					var parent = this.selection.parent();
					if (range === null || $(parent).closest('.redactor-in').length === 0)
					{
						return;
					}

					range = range.cloneRange();

					try {
						range.collapse(collapse);
						range.insertNode(node);
					}
					catch (e)
					{
						this.focus.start();
					}
				},
				iterateRemove: function(i, el)
				{
					var $el = $(el);
					var text = $el.text().replace(/\u200B/g, '');

					return (text === '') ? $el.remove() : $el.replaceWith(function() { return $(this).contents(); });
				}
			};
		},

		// =modal
		modal: function()
		{
			return {
				callbacks: {},
				templates: function()
				{
					this.opts.modal = {
						'image-edit': String()
						+ '<div class="redactor-modal-tab redactor-group" data-title="General">'
							+ '<div id="redactor-image-preview" class="redactor-modal-tab-side">'
							+ '</div>'
							+ '<div class="redactor-modal-tab-area">'
								+ '<section>'
									+ '<label>' + this.lang.get('title') + '</label>'
									+ '<input type="text" id="redactor-image-title" />'
								+ '</section>'
								+ '<section>'
									+ '<label>' + this.lang.get('caption') + '</label>'
									+ '<input type="text" id="redactor-image-caption" aria-label="' + this.lang.get('caption') + '" />'
								+ '</section>'
								+ '<section>'
									+ '<label>' + this.lang.get('link') + '</label>'
									+ '<input type="text" id="redactor-image-link" aria-label="' + this.lang.get('link') + '" />'
								+ '</section>'
								+ '<section>'
									+ '<label>' + this.lang.get('width') + '</label>'
									+ '<input type="text" id="redactor-image-width" aria-label="' + this.lang.get('width') + '" />'
								+ '</section>'
								+ '<section>'
        							+ '<label class="redactor-image-position-option">' + this.lang.get('image-position') + '</label>'
        							+ '<select class="redactor-image-position-option" id="redactor-image-align" aria-label="' + this.lang.get('image-position') + '">'
        								+ '<option value="none">' + this.lang.get('none') + '</option>'
        								+ '<option value="left">' + this.lang.get('left') + '</option>'
        								+ '<option value="center">' + this.lang.get('center') + '</option>'
        								+ '<option value="right">' + this.lang.get('right') + '</option>'
        							+ '</select>'
								+ '</section>'
								+ '<section>'
									+ '<label class="checkbox"><input type="checkbox" id="redactor-image-link-blank" aria-label="' + this.lang.get('link-in-new-tab') + '"> ' + this.lang.get('link-in-new-tab') + '</label>'
								+ '</section>'
								+ '<section>'
									+ '<button id="redactor-modal-button-action">' + this.lang.get('insert') + '</button>'
									+ '<button id="redactor-modal-button-cancel">' + this.lang.get('cancel') + '</button>'
									+ '<button id="redactor-modal-button-delete" class="redactor-modal-button-offset">' + this.lang.get('delete') + '</button>'
								+ '</section>'
							+ '</div>'
						+ '</div>',

						'image': String()
						+ '<div class="redactor-modal-tab" data-title="Upload">'
							+ '<section>'
								+ '<div id="redactor-modal-image-droparea"></div>'
	 						+ '</section>'
 						+ '</div>',

						'file': String()
						+ '<div class="redactor-modal-tab" data-title="Upload">'
							+ '<section>'
								+ '<label>' + this.lang.get('filename') + ' <span class="desc">(' + this.lang.get('optional') + ')</span></label>'
								+ '<input type="text" id="redactor-filename" aria-label="' + this.lang.get('filename') + '" /><br><br>'
							+ '</section>'
							+ '<section>'
								+ '<div id="redactor-modal-file-upload"></div>'
							+ '</section>'
						+ '</div>',

						'link': String()
						+ '<div class="redactor-modal-tab" data-title="General">'
							+ '<section>'
								+ '<label>URL</label>'
								+ '<input type="url" id="redactor-link-url" aria-label="URL" />'
							+ '</section>'
							+ '<section>'
								+ '<label>' + this.lang.get('text') + '</label>'
								+ '<input type="text" id="redactor-link-url-text" aria-label="' + this.lang.get('text') + '" />'
							+ '</section>'
							+ '<section>'
								+ '<label class="checkbox"><input type="checkbox" id="redactor-link-blank"> ' + this.lang.get('link-in-new-tab') + '</label>'
							+ '</section>'
							+ '<section>'
								+ '<button id="redactor-modal-button-action">' + this.lang.get('insert') + '</button>'
								+ '<button id="redactor-modal-button-cancel">' + this.lang.get('cancel') + '</button>'
							+ '</section>'
						+ '</div>'
					};

					$.extend(this.opts, this.opts.modal);

				},
				addCallback: function(name, callback)
				{
					this.modal.callbacks[name] = callback;
				},
				addTemplate: function(name, template)
				{
					this.opts.modal[name] = template;
				},
				getTemplate: function(name)
				{
					return this.opts.modal[name];
				},
				getModal: function()
				{
					return this.$modalBody;
				},
				getActionButton: function()
				{
					return this.$modalBody.find('#redactor-modal-button-action');
				},
				getCancelButton: function()
				{
					return this.$modalBody.find('#redactor-modal-button-cancel');
				},
				getDeleteButton: function()
				{
					return this.$modalBody.find('#redactor-modal-button-delete');
				},
				load: function(templateName, title, width)
				{
					if (typeof this.$modalBox !== 'undefined' && this.$modalBox.hasClass('open'))
					{
						return;
					}

					this.modal.templateName = templateName;
					this.modal.width = width;

					this.modal.build();
					this.modal.enableEvents();
					this.modal.setTitle(title);
					this.modal.setDraggable();
					this.modal.setContent();

					// callbacks
					if (typeof this.modal.callbacks[templateName] !== 'undefined')
					{
						this.modal.callbacks[templateName].call(this);
					}

				},
				show: function()
				{

					if (!this.detect.isDesktop())
					{
						document.activeElement.blur();
					}

					this.selection.save();
					this.modal.buildTabber();

					if (this.detect.isMobile())
					{
						this.modal.width = '96%';
					}

					// resize
					setTimeout($.proxy(this.modal.buildWidth, this), 0);
					$(window).on('resize.redactor-modal', $.proxy(this.modal.buildWidth, this));


					this.$modalOverlay.redactorAnimation('fadeIn', {
						duration: 0.25
					});

					this.$modalBox.addClass('open').show();
					this.$modal.redactorAnimation('fadeIn', {
							timing: 'cubic-bezier(0.175, 0.885, 0.320, 1.105)'
						},
						$.proxy(function()
						{

							this.utils.saveScroll();
							this.utils.disableBodyScroll();

							// modal shown callback
							this.core.callback('modalOpened', this.modal.templateName, this.$modal);

							// fix bootstrap modal focus
							$(document).off('focusin.modal');

							// enter
							var $elements = this.$modal.find('input[type=text],input[type=url],input[type=email]');
							$elements.on('keydown.redactor-modal', $.proxy(this.modal.setEnter, this));

						}, this)
					);

				},
				buildWidth: function()
				{
					var windowHeight = $(window).height();
					var windowWidth = $(window).width();

					var number = (typeof this.modal.width === 'number');

					if (!number && this.modal.width.match(/%$/))
					{
						this.$modal.css({ 'width': this.modal.width, 'margin-bottom': '16px' });
					}
					else if (parseInt(this.modal.width) > windowWidth)
					{
						this.$modal.css({ 'width': '96%', 'margin-bottom': '2%' });
					}
					else
					{
						if (number)
						{
							this.modal.width += 'px';
						}

						this.$modal.css({ 'width': this.modal.width, 'margin-bottom': '16px' });
					}

					// margin top
					var height = this.$modal.outerHeight();
					var top = (windowHeight/2 - height/2) + 'px';

					if (this.detect.isMobile())
					{
						top = '2%';
					}
					else if (height > windowHeight)
					{
						top = '16px';

					}

					this.$modal.css('margin-top', top);
				},
				buildTabber: function()
				{
					this.modal.tabs = this.$modal.find('.redactor-modal-tab');

					if (this.modal.tabs.length < 2)
					{
						return;
					}

					this.modal.$tabsBox = $('<div id="redactor-modal-tabber" />');
					$.each(this.modal.tabs, $.proxy(function(i,s)
					{
						var a = $('<a href="#" rel="' + i + '" />').text($(s).attr('data-title'));

						a.on('click', $.proxy(this.modal.showTab, this));

						if (i === 0)
						{
							a.addClass('active');
						}

						this.modal.$tabsBox.append(a);

					}, this));

					this.$modalBody.prepend(this.modal.$tabsBox);

				},
				showTab: function(e)
				{
					e.preventDefault();

					var $el = $(e.target);
					var index = $el.attr('rel');

					this.modal.tabs.hide();
					this.modal.tabs.eq(index).show();

					$('#redactor-modal-tabber').find('a').removeClass('active');
					$el.addClass('active');

					return false;

				},
				setTitle: function(title)
				{
					this.$modalHeader.html(title);
				},
				setContent: function()
				{
					this.$modalBody.html(this.modal.getTemplate(this.modal.templateName));

					this.modal.getCancelButton().on('mousedown', $.proxy(this.modal.close, this));
				},
				setDraggable: function()
				{
					if (typeof $.fn.draggable === 'undefined')
					{
						return;
					}

					this.$modal.draggable({ handle: this.$modalHeader });
					this.$modalHeader.css('cursor', 'move');
				},
				setEnter: function(e)
				{
					if (e.which !== 13)
					{
						return;
					}

					e.preventDefault();
					this.modal.getActionButton().click();
				},
				build: function()
				{
					this.modal.buildOverlay();

					this.$modalBox = $('<div id="redactor-modal-box"/>').hide();
					this.$modal = $('<div id="redactor-modal" role="dialog" />');
					this.$modalHeader = $('<div id="redactor-modal-header" />');
					this.$modalClose = $('<button type="button" id="redactor-modal-close" aria-label="' + this.lang.get('close') + '" />').html('&times;');
					this.$modalBody = $('<div id="redactor-modal-body" />');

					this.$modal.append(this.$modalHeader);
					this.$modal.append(this.$modalBody);
					this.$modal.append(this.$modalClose);
					this.$modalBox.append(this.$modal);
					this.$modalBox.appendTo(document.body);

				},
				buildOverlay: function()
				{
					this.$modalOverlay = $('<div id="redactor-modal-overlay">').hide();
					$('body').prepend(this.$modalOverlay);
				},
				enableEvents: function()
				{
					this.$modalClose.on('mousedown.redactor-modal', $.proxy(this.modal.close, this));
					$(document).on('keyup.redactor-modal', $.proxy(this.modal.closeHandler, this));
					this.core.editor().on('keyup.redactor-modal', $.proxy(this.modal.closeHandler, this));
					this.$modalBox.on('click.redactor-modal', $.proxy(this.modal.close, this));
				},
				disableEvents: function()
				{
					this.$modalClose.off('mousedown.redactor-modal');
					$(document).off('keyup.redactor-modal');
					this.core.editor().off('keyup.redactor-modal');
					this.$modalBox.off('click§.redactor-modal');
					$(window).off('resize.redactor-modal');
				},
				closeHandler: function(e)
				{
					if (e.which !== this.keyCode.ESC)
					{
						return;
					}

					this.modal.close(false);
				},
				close: function(e)
				{
					if (e)
					{
						if ($(e.target).attr('id') !== 'redactor-modal-button-cancel' && e.target !== this.$modalClose[0] && e.target !== this.$modalBox[0])
						{
							return;
						}

						e.preventDefault();
					}

					if (!this.$modalBox)
					{
						return;
					}

					// restore selection
					this.selection.restore();

					this.modal.disableEvents();
					this.utils.enableBodyScroll();
					this.utils.restoreScroll();

					this.$modalOverlay.redactorAnimation('fadeOut', { duration: 0.4 }, $.proxy(function()
					{
						this.$modalOverlay.remove();

					}, this));

					this.$modal.redactorAnimation('fadeOut', {

						duration: 0.3,
						timing: 'cubic-bezier(0.175, 0.885, 0.320, 1.175)'

					}, $.proxy(function()
					{
						if (typeof this.$modalBox !== 'undefined')
						{
							this.$modalBox.remove();
							this.$modalBox = undefined;
						}

						$(document.body).css('overflow', this.modal.bodyOveflow);
						this.core.callback('modalClosed', this.modal.templateName);

					}, this));

				}
			};
		},

		// =observe
		observe: function()
		{
			return {
				load: function()
				{
					if (typeof this.opts.destroyed !== 'undefined')
					{
						return;
					}

					this.observe.links();
					this.observe.images();

				},
				isCurrent: function($el, $current)
				{
					if (typeof $current === 'undefined')
					{
						$current = $(this.selection.current());
					}

					return $current.is($el) || $current.parents($el).length > 0;
				},
				toolbar: function()
				{
					this.observe.buttons();
					this.observe.dropdowns();
				},
				buttons: function(e, btnName)
				{
					var current = this.selection.current();
					var parent = this.selection.parent();

					if (e !== false)
					{
						this.button.setInactiveAll();
					}
					else
					{
						this.button.setInactiveAll(btnName);
					}

					if (e === false && btnName !== 'html')
					{
						if ($.inArray(btnName, this.opts.activeButtons) !== -1)
						{
							this.button.toggleActive(btnName);
						}

						return;
					}

					if (!this.utils.isRedactorParent(current))
					{
						return;
					}

					// disable line
					if (this.utils.isCurrentOrParentHeader() || this.utils.isCurrentOrParent(['table', 'pre', 'blockquote', 'li']))
					{
						this.button.disable('horizontalrule');
					}
					else
					{
						this.button.enable('horizontalrule');
					}


					$.each(this.opts.activeButtonsStates, $.proxy(function(key, value)
					{
						var parentEl = $(parent).closest(key, this.$editor[0]);
						var currentEl = $(current).closest(key, this.$editor[0]);

						if (parentEl.length !== 0 && !this.utils.isRedactorParent(parentEl))
						{
							return;
						}

						if (!this.utils.isRedactorParent(currentEl))
						{
							return;
						}

						if (parentEl.length !== 0 || currentEl.closest(key, this.$editor[0]).length !== 0)
						{
							this.button.setActive(value);
						}

					}, this));

				},
				dropdowns: function()
				{
    				var finded = $('<div />').html(this.selection.html()).find('a').length;
					var $current = $(this.selection.current());
					var isRedactor = this.utils.isRedactorParent($current);

					$.each(this.opts.observe.dropdowns, $.proxy(function(key, value)
					{
						var observe = value.observe,
							element = observe.element,
							$item   = value.item,
							inValues = typeof observe['in'] !== 'undefined' ? observe['in'] : false,
							outValues = typeof observe.out !== 'undefined' ? observe.out : false;

						if (($current.closest(element).length > 0 && isRedactor) || (element === 'a' && finded !== 0))
						{
							this.observe.setDropdownProperties($item, inValues, outValues);
						}
						else
						{
							this.observe.setDropdownProperties($item, outValues, inValues);
						}

					}, this));
				},
				setDropdownProperties: function($item, addProperties, deleteProperties)
				{
					if (deleteProperties && typeof deleteProperties.attr !== 'undefined')
					{
						this.observe.setDropdownAttr($item, deleteProperties.attr, true);
					}

					if (typeof addProperties.attr !== 'undefined')
					{
						this.observe.setDropdownAttr($item, addProperties.attr);
					}

					if (typeof addProperties.title !== 'undefined')
					{
						$item.find('span').text(addProperties.title);
					}
				},
				setDropdownAttr: function($item, properties, isDelete)
				{
					$.each(properties, function(key, value)
					{
						if (key === 'class')
						{
							if (!isDelete)
							{
								$item.addClass(value);
							}
							else
							{
								$item.removeClass(value);
							}
						}
						else
						{
							if (!isDelete)
							{
								$item.attr(key, value);
							}
							else
							{
								$item.removeAttr(key);
							}
						}
					});
				},
				addDropdown: function($item, btnName, btnObject)
				{
					if (typeof btnObject.observe === "undefined")
					{
						return;
					}

					btnObject.item = $item;

					this.opts.observe.dropdowns.push(btnObject);
				},
				images: function()
				{
                    if (this.opts.imageEditable)
                    {
                        this.core.editor().addClass('redactor-layer-img-edit');
    					this.core.editor().find('img').each($.proxy(function(i, img)
    					{
    						var $img = $(img);

    						// IE fix (when we clicked on an image and then press backspace IE does goes to image's url)
    						$img.closest('a', this.$editor[0]).on('click', function(e) { e.preventDefault(); });

    						this.image.setEditable($img);


    					}, this));
                    }
				},
				links: function()
				{
					if (this.opts.linkTooltip)
					{
    					this.core.editor().find('a').each($.proxy(function(i, s)
    					{
        					var $link = $(s);
        					if ($link.data('cached') !== true)
        					{
            					$link.data('cached', true);
            					$link.on('touchstart.redactor.' + this.uuid + ' click.redactor.' + this.uuid, $.proxy(this.observe.showTooltip, this));
        					}

    					}, this));
					}
				},
				getTooltipPosition: function($link)
				{
					return $link.offset();
				},
				showTooltip: function(e)
				{
					var $el = $(e.target);

					if ($el[0].tagName === 'IMG')
					{
						return;
					}

					if ($el[0].tagName !== 'A')
					{
						$el = $el.closest('a', this.$editor[0]);
					}

					if ($el[0].tagName !== 'A')
					{
						return;
					}

					var $link = $el;

					var pos = this.observe.getTooltipPosition($link);
					var tooltip = $('<span class="redactor-link-tooltip"></span>');

					var href = $link.attr('href');
					if (href === undefined)
					{
						href = '';
					}

					if (href.length > 24)
					{
						href = href.substring(0, 24) + '...';
					}

					var aLink = $('<a href="' + $link.attr('href') + '" target="_blank" />').html(href).addClass('redactor-link-tooltip-action');
					var aEdit = $('<a href="#" />').html(this.lang.get('edit')).on('click', $.proxy(this.link.show, this)).addClass('redactor-link-tooltip-action');
					var aUnlink = $('<a href="#" />').html(this.lang.get('unlink')).on('click', $.proxy(this.link.unlink, this)).addClass('redactor-link-tooltip-action');

					tooltip.append(aLink).append(' | ').append(aEdit).append(' | ').append(aUnlink);

					var lineHeight = parseInt($link.css('line-height'), 10);
                    var lineClicked = Math.ceil((e.pageY - pos.top)/lineHeight);
                    var top = pos.top + lineClicked * lineHeight;

					tooltip.css({
						top: top + 'px',
						left: pos.left + 'px'
					});

					$('.redactor-link-tooltip').remove();
					$('body').append(tooltip);

					this.core.editor().on('touchstart.redactor.' + this.uuid + ' click.redactor.' + this.uuid, $.proxy(this.observe.closeTooltip, this));
					$(document).on('touchstart.redactor.' + this.uuid + ' click.redactor.' + this.uuid, $.proxy(this.observe.closeTooltip, this));
				},
				closeAllTooltip: function()
				{
					$('.redactor-link-tooltip').remove();
				},
				closeTooltip: function(e)
				{
					e = e.originalEvent || e;

					var target = e.target;
					var $parent = $(target).closest('a', this.$editor[0]);
					if ($parent.length !== 0 && $parent[0].tagName === 'A' && target.tagName !== 'A')
					{
						return;
					}
					else if ((target.tagName === 'A' && this.utils.isRedactorParent(target)) || $(target).hasClass('redactor-link-tooltip-action'))
					{
						return;
					}

					this.observe.closeAllTooltip();

					this.core.editor().off('touchstart.redactor.' + this.uuid + ' click.redactor.' + this.uuid, $.proxy(this.observe.closeTooltip, this));
					$(document).off('touchstart.redactor.' + this.uuid + ' click.redactor.' + this.uuid, $.proxy(this.observe.closeTooltip, this));
				}

			};
		},

		// =offset
		offset: function()
		{
			return {
				get: function(node)
				{
					var cloned = this.offset.clone(node);
					if (cloned === false)
					{
						return 0;
					}

					var div = document.createElement('div');
					div.appendChild(cloned.cloneContents());
					div.innerHTML = div.innerHTML.replace(/<img(.*?[^>])>$/gi, 'i');

			        var text = $.trim($(div).text()).replace(/[\t\n\r\n]/g, '').replace(/\u200B/g, '');

					return text.length;

				},
				clone: function(node)
				{
					var sel = this.selection.get();
					var range = this.selection.range(sel);

					if (range === null && typeof node === 'undefined')
					{
						return false;
					}

					node = (typeof node === 'undefined') ? this.$editor : node;
					if (node === false)
					{
						return false;
					}

					node = node[0] || node;

					var cloned = range.cloneRange();
					cloned.selectNodeContents(node);
					cloned.setEnd(range.endContainer, range.endOffset);

					return cloned;
				},
				set: function(start, end)
				{
					end = (typeof end === 'undefined') ? start : end;

					if (!this.focus.is())
					{
						this.focus.start();
					}

					var sel = this.selection.get();
					var range = this.selection.range(sel);
					var node, offset = 0;
					var walker = document.createTreeWalker(this.$editor[0], NodeFilter.SHOW_TEXT, null, null);

					while ((node = walker.nextNode()) !== null)
					{
						offset += node.nodeValue.length;
						if (offset > start)
						{
							range.setStart(node, node.nodeValue.length + start - offset);
							start = Infinity;
						}

						if (offset >= end)
						{
							range.setEnd(node, node.nodeValue.length + end - offset);
							break;
						}
					}

					range.collapse(false);
					this.selection.update(sel, range);
				}
			};
		},

		// =paragraphize
		paragraphize: function()
		{
			return {
				load: function(html)
				{
					if (this.opts.paragraphize === false || this.opts.type === 'inline' || this.opts.type === 'pre')
					{
						return html;
					}

					if (html === '' || html === '<p></p>')
					{
						return this.opts.emptyHtml;
					}

					html = html + "\n";

					this.paragraphize.safes = [];
					this.paragraphize.z = 0;

					// before
					html = html.replace(/(<br\s?\/?>){1,}\n?<\/blockquote>/gi, '</blockquote>');
					html = html.replace(/<\/pre>/gi, "</pre>\n\n");
					html = html.replace(/<p>\s<br><\/p>/gi, '<p></p>');

					html = this.paragraphize.getSafes(html);

					html = html.replace('<br>', "\n");
					html = this.paragraphize.convert(html);

					html = this.paragraphize.clear(html);
					html = this.paragraphize.restoreSafes(html);

					// after
					html = html.replace(new RegExp('<br\\s?/?>\n?<(' + this.opts.paragraphizeBlocks.join('|') + ')(.*?[^>])>', 'gi'), '<p><br /></p>\n<$1$2>');

					return $.trim(html);
				},
				getSafes: function(html)
				{
					var $div = $('<div />').append(html);

					// remove paragraphs in blockquotes
					$div.find('blockquote p').replaceWith(function()
					{
						return $(this).append('<br />').contents();
					});

                    $div.find(this.opts.paragraphizeBlocks.join(', ')).each($.proxy(function(i,s)
					{
						this.paragraphize.z++;
						this.paragraphize.safes[this.paragraphize.z] = s.outerHTML;

						return $(s).replaceWith("\n#####replace" + this.paragraphize.z + "#####\n\n");


					}, this));

                    // deal with redactor selection markers
                    $div.find('span.redactor-selection-marker').each($.proxy(function(i,s)
                    {
                        this.paragraphize.z++;
                        this.paragraphize.safes[this.paragraphize.z] = s.outerHTML;

                        return $(s).replaceWith("\n#####replace" + this.paragraphize.z + "#####\n\n");
                    }, this));

					return $div.html();
				},
				restoreSafes: function(html)
				{
					$.each(this.paragraphize.safes, function(i,s)
					{
						s = (typeof s !== 'undefined') ? s.replace(/\$/g, '&#36;') : s;
						html = html.replace('#####replace' + i + '#####', s);

					});

					return html;
				},
				convert: function(html)
				{
					html = html.replace(/\r\n/g, "xparagraphmarkerz");
					html = html.replace(/\n/g, "xparagraphmarkerz");
					html = html.replace(/\r/g, "xparagraphmarkerz");

					var re1 = /\s+/g;
					html = html.replace(re1, " ");
					html = $.trim(html);

					var re2 = /xparagraphmarkerzxparagraphmarkerz/gi;
					html = html.replace(re2, "</p><p>");

					var re3 = /xparagraphmarkerz/gi;
					html = html.replace(re3, "<br>");

					html = '<p>' + html + '</p>';

					html = html.replace("<p></p>", "");
					html = html.replace("\r\n\r\n", "");
					html = html.replace(/<\/p><p>/g, "</p>\r\n\r\n<p>");
					html = html.replace(new RegExp("<br\\s?/?></p>", "g"), "</p>");
					html = html.replace(new RegExp("<p><br\\s?/?>", "g"), "<p>");
					html = html.replace(new RegExp("<p><br\\s?/?>", "g"), "<p>");
					html = html.replace(new RegExp("<br\\s?/?></p>", "g"), "</p>");
					html = html.replace(/<p>&nbsp;<\/p>/gi, "");
					html = html.replace(/<p>\s?<br>&nbsp;<\/p>/gi, '');
					html = html.replace(/<p>\s?<br>/gi, '<p>');

					return html;
				},
				clear: function(html)
				{

					html = html.replace(/<p>(.*?)#####replace(.*?)#####\s?<\/p>/gi, '<p>$1</p>#####replace$2#####');
					html = html.replace(/(<br\s?\/?>){2,}<\/p>/gi, '</p>');

					html = html.replace(new RegExp('</blockquote></p>', 'gi'), '</blockquote>');
					html = html.replace(new RegExp('<p></blockquote>', 'gi'), '</blockquote>');
					html = html.replace(new RegExp('<p><blockquote>', 'gi'), '<blockquote>');
					html = html.replace(new RegExp('<blockquote></p>', 'gi'), '<blockquote>');

					html = html.replace(new RegExp('<p><p ', 'gi'), '<p ');
					html = html.replace(new RegExp('<p><p>', 'gi'), '<p>');
					html = html.replace(new RegExp('</p></p>', 'gi'), '</p>');
					html = html.replace(new RegExp('<p>\\s?</p>', 'gi'), '');
					html = html.replace(new RegExp("\n</p>", 'gi'), '</p>');
					html = html.replace(new RegExp('<p>\t?\t?\n?<p>', 'gi'), '<p>');
					html = html.replace(new RegExp('<p>\t*</p>', 'gi'), '');

					return html;
				}
			};
		},

		// =paste
		paste: function()
		{
			return {
				init: function(e)
				{
					this.rtePaste = true;
					var pre = (this.opts.type === 'pre' || this.utils.isCurrentOrParent('pre')) ? true : false;

					// clipboard event
					if (this.detect.isDesktop())
					{
    					if (!this.paste.pre && this.opts.clipboardImageUpload && this.opts.imageUpload && this.paste.detectClipboardUpload(e))
    					{
    						if (this.detect.isIe())
    						{
    							setTimeout($.proxy(this.paste.clipboardUpload, this), 100);
    						}

    						return;
    					}
					}

					this.utils.saveScroll();
					this.selection.save();
					this.paste.createPasteBox(pre);

					$(window).on('scroll.redactor-freeze', $.proxy(function()
					{
						$(window).scrollTop(this.saveBodyScroll);

					}, this));

					setTimeout($.proxy(function()
					{
						var html = this.paste.getPasteBoxCode(pre);

						// buffer
						this.buffer.set();
						this.selection.restore();

						this.utils.restoreScroll();

						// paste info
						var data = this.clean.getCurrentType(html);

						// clean
						html = this.clean.onPaste(html, data);

						// callback
						var returned = this.core.callback('paste', html);
						html = (typeof returned === 'undefined') ? html : returned;

						this.paste.insert(html, data);
						this.rtePaste = false;

						// clean pre breaklines
						if (pre)
						{
							this.clean.cleanPre();
						}

						$(window).off('scroll.redactor-freeze');

					}, this), 1);

				},
				getPasteBoxCode: function(pre)
				{
					var html = (pre) ? this.$pasteBox.val() : this.$pasteBox.html();
					this.$pasteBox.remove();

					return html;
				},
				createPasteBox: function(pre)
				{
					var css = { position: 'fixed', width: '1px', top: 0, left: '-9999px' };

					this.$pasteBox = (pre) ? $('<textarea>').css(css) : $('<div>').attr('contenteditable', 'true').css(css);
					this.paste.appendPasteBox();
					this.$pasteBox.focus();
				},
				appendPasteBox: function()
				{
					if (this.detect.isIe())
					{
						this.core.box().append(this.$pasteBox);
					}
					else
					{
						// bootstrap modal
						var $visibleModals = $('.modal-body:visible');
						if ($visibleModals.length > 0)
						{
							$visibleModals.append(this.$pasteBox);
						}
						else
						{
							$('body').prepend(this.$pasteBox);
						}
					}
				},
				detectClipboardUpload: function(e)
				{
					e = e.originalEvent || e;

					var clipboard = e.clipboardData;

					if (this.detect.isIe())
					{
						return true;
					}

					if (this.detect.isFirefox())
					{
						return false;
					}

					// prevent safari fake url
					var types = clipboard.types;
					if (types.indexOf('public.tiff') !== -1)
					{
						e.preventDefault();
						return false;
					}


					if (!clipboard.items || !clipboard.items.length)
					{
						return;
					}

					var file = clipboard.items[0].getAsFile();
					if (file === null)
					{
						return false;
					}

					var reader = new FileReader();
					reader.readAsDataURL(file);
					reader.onload = $.proxy(this.paste.insertFromClipboard, this);

					return true;
				},
				clipboardUpload: function()
				{
					var imgs = this.$editor.find('img');
					$.each(imgs, $.proxy(function(i,s)
					{
						if (s.src.search(/^data\:image/i) === -1)
						{
							return;
						}

						var formData = !!window.FormData ? new FormData() : null;
						if (!window.FormData)
						{
							return;
						}

						this.buffer.set();

						this.upload.direct = true;
						this.upload.type = 'image';
						this.upload.url = this.opts.imageUpload;
						this.upload.callback = $.proxy(function(data)
						{
							if (this.detect.isIe())
							{
								$(s).wrap($('<figure />'));
							}

							else
							{
								var $parent = $(s).parent();
								this.utils.replaceToTag($parent, 'figure');
							}

							s.src = data.url;
							this.core.callback('imageUpload', $(s), data);

						}, this);

						var blob = this.utils.dataURItoBlob(s.src);

						formData.append('clipboard', 1);
						formData.append(this.opts.imageUploadParam, blob);

						this.progress.show();
						this.upload.send(formData, false);
						this.code.sync();

					}, this));
				},
				insertFromClipboard: function(e)
				{
					var formData = !!window.FormData ? new FormData() : null;
					if (!window.FormData)
					{
						return;
					}

					this.buffer.set();

					this.upload.direct = true;
					this.upload.type = 'image';
					this.upload.url = this.opts.imageUpload;
					this.upload.callback = this.image.insert;

					var blob = this.utils.dataURItoBlob(e.target.result);

					formData.append('clipboard', 1);
					formData.append(this.opts.imageUploadParam, blob);

					this.progress.show();
					this.upload.send(formData, e);
				},
				insert: function(html, data)
				{
					if (data.pre)
					{
						this.insert.raw(html);
					}
					else if (data.text)
					{
						this.insert.text(html);
					}
					else
					{
						this.insert.html(html, data);
					}

					// Firefox Clipboard Observe
					if (this.detect.isFirefox() && this.opts.clipboardImageUpload)
					{
						setTimeout($.proxy(this.paste.clipboardUpload, this), 100);
					}

				}
			};
		},

		// =placeholder
		placeholder: function()
		{
			return {

				// public
				enable: function()
				{
					setTimeout($.proxy(function()
					{
						return (this.placeholder.isEditorEmpty()) ? this.placeholder.show() : this.placeholder.hide();

					}, this), 5);
				},
				show: function()
				{
					this.core.editor().addClass('redactor-placeholder');
				},
				update: function(text)
				{
					this.opts.placeholder = text;
					this.core.editor().attr('placeholder', text);
				},
				hide: function()
				{
					this.core.editor().removeClass('redactor-placeholder');
				},
				is: function()
				{
					return this.core.editor().hasClass('redactor-placeholder');
				},


				// private
				init: function()
				{
					if (!this.placeholder.enabled())
					{
						return;
					}

					if (!this.utils.isEditorRelative())
					{
						this.utils.setEditorRelative();
					}

					this.placeholder.build();
					this.placeholder.buildPosition();
					this.placeholder.enable();
					this.placeholder.enableEvents();

				},
				enabled: function()
				{
					return (this.opts.placeholder) ? this.core.element().attr('placeholder', this.opts.placeholder) : this.placeholder.isAttr();
				},
				enableEvents: function()
				{
					this.core.editor().on('keydown.redactor-placeholder.' + this.uuid, $.proxy(this.placeholder.enable, this));
				},
				disableEvents: function()
				{
					this.core.editor().off('.redactor-placeholder.' + this.uuid);
				},
				build: function()
				{
					this.core.editor().attr('placeholder', this.core.element().attr('placeholder'));
				},
				buildPosition: function()
				{
					var $style = $('<style />');
					$style.addClass('redactor-placeholder-style-tag');
					$style.html('#' + this.core.id() + '.redactor-placeholder::after ' + this.placeholder.getPosition());

					$('head').append($style);
				},
				getPosition: function()
				{
					return '{ top: ' + this.core.editor().css('padding-top') + '; left: ' + this.core.editor().css('padding-left') + '; }';
				},
				isEditorEmpty: function()
				{
					var html = $.trim(this.core.editor().html()).replace(/[\t\n]/g, '');
					var states = ['', '<p>​</p>', '<p>​<br></p>'];

					return ($.inArray(html, states) !== -1);
				},
				isAttr: function()
				{
					return (typeof this.core.element().attr('placeholder') !== 'undefined' && this.core.element().attr('placeholder') !== '');
				},
				destroy: function()
				{
					this.core.editor().removeAttr('placeholder');

					this.placeholder.hide();
					this.placeholder.disableEvents();

					$('.redactor-placeholder-style-tag').remove();
				}
			};
		},

		// =progress
		progress: function()
		{
			return {
				$box: null,
				$bar: null,
				target: document.body,  // or id selector

				// public
				show: function()
				{
					if (!this.progress.is())
					{
						this.progress.build();
						this.progress.$box.redactorAnimation('fadeIn');
					}
					else
					{
						this.progress.$box.show();
					}
				},
				hide: function()
				{
					if (this.progress.is())
					{
						this.progress.$box.redactorAnimation('fadeOut', { duration: 0.35 }, $.proxy(this.progress.destroy, this));
					}
				},
				update: function(value)
				{
					this.progress.show();
					this.progress.$bar.css('width', value + '%');
				},
				is: function()
				{
					return (this.progress.$box === null) ? false : true;
				},

				// private
				build: function()
				{
					this.progress.$bar = $('<span />');
					this.progress.$box = $('<div id="redactor-progress" />');

					this.progress.$box.append(this.progress.$bar);
					$(this.progress.target).append(this.progress.$box);
				},
				destroy: function()
				{
					if (this.progress.is())
					{
						this.progress.$box.remove();
					}

					this.progress.$box = null;
					this.progress.$bar = null;
				}
			};
		},

		// =selection
		selection: function()
		{
			return {
				get: function()
				{
					if (window.getSelection)
					{
						return window.getSelection();
					}
					else if (document.selection && document.selection.type !== "Control")
					{
						return document.selection;
					}

					return null;
				},
				range: function(sel)
				{
					if (typeof sel === 'undefined')
					{
						sel = this.selection.get();
					}

					if (sel.getRangeAt && sel.rangeCount)
					{
						return sel.getRangeAt(0);
					}

					return null;
				},
				is: function()
				{
					return (this.selection.isCollapsed()) ? false : true;
				},
				isRedactor: function()
				{
					var range = this.selection.range();

					if (range !== null)
					{
						var el = range.startContainer.parentNode;

						if ($(el).hasClass('redactor-in') || $(el).parents('.redactor-in').length !== 0)
						{
							return true;
						}
					}

					return false;
				},
				isCollapsed: function()
				{
					var sel = this.selection.get();

					return (sel === null) ? false : sel.isCollapsed;
				},
				update: function(sel, range)
				{
					if (range === null)
					{
						return;
					}

					sel.removeAllRanges();
					sel.addRange(range);
				},
				current: function()
				{
					var sel = this.selection.get();

					return (sel === null) ? false : sel.anchorNode;
				},
				parent: function()
				{
					var current = this.selection.current();

					return (current === null) ? false : current.parentNode;
				},
				block: function(node)
				{
					node = node || this.selection.current();

					while (node)
					{
						if (this.utils.isBlockTag(node.tagName))
						{
							return ($(node).hasClass('redactor-in')) ? false : node;
						}

						node = node.parentNode;
					}

					return false;
				},
				inline: function(node)
				{
					node = node || this.selection.current();

					while (node)
					{
						if (this.utils.isInlineTag(node.tagName))
						{
							return ($(node).hasClass('redactor-in')) ? false : node;
						}

						node = node.parentNode;
					}

					return false;
				},
				element: function(node)
				{
					if (!node)
					{
						node = this.selection.current();
					}

					while (node)
					{
						if (node.nodeType === 1)
						{
							if ($(node).hasClass('redactor-in'))
							{
								return false;
							}

							return node;
						}

						node = node.parentNode;
					}

					return false;
				},
				prev: function()
				{
					var current = this.selection.current();

					return (current === null) ? false : this.selection.current().previousSibling;
				},
				next: function()
				{
					var current = this.selection.current();

					return (current === null) ? false : this.selection.current().nextSibling;
				},
				blocks: function(tag)
				{
					var blocks = [];
					var nodes = this.selection.nodes(tag);

					$.each(nodes, $.proxy(function(i,node)
					{
						if (this.utils.isBlock(node))
						{
							blocks.push(node);
						}

					}, this));

					var block = this.selection.block();
					if (blocks.length === 0 && block === false)
					{
						return [];
					}
					else if (blocks.length === 0 && block !== false)
					{
						return [block];
					}
					else
					{
						return blocks;
					}

				},
				inlines: function(tag)
				{
					var inlines = [];
					var nodes = this.selection.nodes(tag);

					$.each(nodes, $.proxy(function(i,node)
					{
						if (this.utils.isInline(node))
						{
							inlines.push(node);
						}

					}, this));

					var inline = this.selection.inline();
					if (inlines.length === 0 && inline === false)
					{
						return [];
					}
					else if (inlines.length === 0 && inline !== false)
					{
						return [inline];
					}
					else
					{
						return inlines;
					}
				},
				nodes: function(tag)
				{
					var filter = (typeof tag === 'undefined') ? [] : (($.isArray(tag)) ? tag : [tag]);

					var sel = this.selection.get();
					var range = this.selection.range(sel);

					if (this.utils.isCollapsed())
					{
						return [this.selection.current()];
					}
					else
					{
						var node = range.startContainer;
						var endNode = range.endContainer;

						// single node
						if (node === endNode)
						{
							return [this.selection.parent()];
						}

						// iterate
						var nodes = [];
						while (node && node !== endNode)
						{
							nodes.push(node = this.selection.nextNode(node));
						}

						// partially selected nodes
						node = range.startContainer;
						while (node && node !== range.commonAncestorContainer)
						{
							nodes.unshift(node);
							node = node.parentNode;
						}

						// remove service nodes
						var resultNodes = [];
						$.each(nodes, function(i,s)
						{
    						if (s)
    						{
    							var tagName = (s.nodeType !== 1) ? false : s.tagName.toLowerCase();

    							if ($(s).hasClass('redactor-script-tag, redactor-selection-marker'))
    							{
    								return;
    							}
    							else if (tagName && filter.length !== 0 && $.inArray(tagName, filter) === -1)
    							{
    								return;
    							}
    							else
    							{
    								resultNodes.push(s);
    							}
							}
						});

						return (resultNodes.length === 0) ? [] : resultNodes;
					}

				},
				nextNode: function(node)
				{
					if (node.hasChildNodes())
					{
						return node.firstChild;
					}
					else
					{
						while (node && !node.nextSibling)
						{
							node = node.parentNode;
						}

						if (!node)
						{
							return null;
						}

						return node.nextSibling;
					}
				},
				save: function()
				{
 					this.marker.insert();
					this.savedSel = this.core.editor().html();
				},
				restore: function(removeMarkers)
				{
                    var node1 = this.marker.find(1);
					var node2 = this.marker.find(2);

					if (this.detect.isFirefox())
					{
						this.core.editor().focus();
					}

					if (node1.length !== 0 && node2.length !== 0)
					{
						this.caret.set(node1, node2);
					}
					else if (node1.length !== 0)
					{
						this.caret.start(node1);
					}
					else
					{
						this.core.editor().focus();
					}

					if (removeMarkers !== false)
					{
						this.marker.remove();
						this.savedSel = false;
					}
				},
                saveInstant: function()
                {
                    var el = this.core.editor()[0];
                    var doc = el.ownerDocument, win = doc.defaultView;
                    var sel = win.getSelection();

                    if (!sel.getRangeAt || !sel.rangeCount)
                    {
                        return;
                    }

                    var range = sel.getRangeAt(0);
                    var selectionRange = range.cloneRange();

                    selectionRange.selectNodeContents(el);
                    selectionRange.setEnd(range.startContainer, range.startOffset);

                    var start = selectionRange.toString().length;

                    this.saved = {
                        start: start,
                        end: start + range.toString().length,
                        node: range.startContainer
                    };

                    return this.saved;
                },
                restoreInstant: function(saved)
                {
                    if (typeof saved === 'undefined' && !this.saved)
                    {
                        return;
                    }

                    this.saved = (typeof saved !== 'undefined') ? saved : this.saved;

                    var $node = this.core.editor().find(this.saved.node);
                    if ($node.length !== 0 && $node.text().trim().replace(/\u200B/g, '').length === 0)
                    {
                       try {
                            var range = document.createRange();
                            range.setStart($node[0], 0);

                            var sel = window.getSelection();
                            sel.removeAllRanges();
                            sel.addRange(range);
                        }
                        catch(e) {}

                        return;
                    }

                    var el = this.core.editor()[0];
                    var doc = el.ownerDocument, win = doc.defaultView;
                    var charIndex = 0, range = doc.createRange();

                    range.setStart(el, 0);
                    range.collapse(true);

                    var nodeStack = [el], node, foundStart = false, stop = false;
                    while (!stop && (node = nodeStack.pop()))
                    {
                        if (node.nodeType == 3)
                        {
                            var nextCharIndex = charIndex + node.length;
                            if (!foundStart && this.saved.start >= charIndex && this.saved.start <= nextCharIndex)
                            {
                                range.setStart(node, this.saved.start - charIndex);
                                foundStart = true;
                            }

                            if (foundStart && this.saved.end >= charIndex && this.saved.end <= nextCharIndex)
                            {
                                range.setEnd(node, this.saved.end - charIndex);
                                stop = true;
                            }
                            charIndex = nextCharIndex;
                        }
                        else
                        {
                            var i = node.childNodes.length;
                            while (i--)
                            {
                                nodeStack.push(node.childNodes[i]);
                            }
                        }
                    }

                    var sel = win.getSelection();
                    sel.removeAllRanges();
                    sel.addRange(range);
                },
				node: function(node)
				{
					$(node).prepend(this.marker.get(1));
					$(node).append(this.marker.get(2));

					this.selection.restore();
				},
				all: function()
				{
					this.core.editor().focus();

					var sel = this.selection.get();
					var range = this.selection.range(sel);

					range.selectNodeContents(this.core.editor()[0]);

					this.selection.update(sel, range);
				},
				remove: function()
				{
					this.selection.get().removeAllRanges();
				},
				replace: function(html)
				{
					this.insert.html(html);
				},
				text: function()
				{
					return this.selection.get().toString();
				},
				html: function()
				{
					var html = '';
					var sel = this.selection.get();

					if (sel.rangeCount)
					{
						var container = document.createElement('div');
						var len = sel.rangeCount;
						for (var i = 0; i < len; ++i)
						{
							container.appendChild(sel.getRangeAt(i).cloneContents());
						}

						html = this.clean.onGet(container.innerHTML);
					}

					return html;
				},
				extractEndOfNode: function(node)
				{
					var sel = this.selection.get();
					var range = this.selection.range(sel);

			        var clonedRange = range.cloneRange();
			        clonedRange.selectNodeContents(node);
			        clonedRange.setStart(range.endContainer, range.endOffset);

			        return clonedRange.extractContents();
				},

				// #backward
				removeMarkers: function()
				{
					this.marker.remove();
				},
				marker: function(num)
				{
					return this.marker.get(num);
				},
				markerHtml: function(num)
				{
					return this.marker.html(num);
				}

			};
		},

		// =shortcuts
		shortcuts: function()
		{
			return {
				// based on https://github.com/jeresig/jquery.hotkeys
				hotkeysSpecialKeys: {
					8: "backspace", 9: "tab", 10: "return", 13: "return", 16: "shift", 17: "ctrl", 18: "alt", 19: "pause",
					20: "capslock", 27: "esc", 32: "space", 33: "pageup", 34: "pagedown", 35: "end", 36: "home",
					37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "del", 59: ";", 61: "=",
					96: "0", 97: "1", 98: "2", 99: "3", 100: "4", 101: "5", 102: "6", 103: "7",
					104: "8", 105: "9", 106: "*", 107: "+", 109: "-", 110: ".", 111 : "/",
					112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8",
					120: "f9", 121: "f10", 122: "f11", 123: "f12", 144: "numlock", 145: "scroll", 173: "-", 186: ";", 187: "=",
					188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'"
				},
				hotkeysShiftNums: {
					"`": "~", "1": "!", "2": "@", "3": "#", "4": "$", "5": "%", "6": "^", "7": "&",
					"8": "*", "9": "(", "0": ")", "-": "_", "=": "+", ";": ": ", "'": "\"", ",": "<",
					".": ">",  "/": "?",  "\\": "|"
				},
				init: function(e, key)
				{
					// disable browser's hot keys for bold and italic if shortcuts off
					if (this.opts.shortcuts === false)
					{
						if ((e.ctrlKey || e.metaKey) && (key === 66 || key === 73))
						{
							e.preventDefault();
						}

						return false;
					}
					else
					{
						// build
						$.each(this.opts.shortcuts, $.proxy(function(str, command)
						{
							this.shortcuts.build(e, str, command);

						}, this));
					}
				},
				build: function(e, str, command)
				{
					var handler = $.proxy(function()
					{
						this.shortcuts.buildHandler(command);

					}, this);

					var keys = str.split(',');
					var len = keys.length;
					for (var i = 0; i < len; i++)
					{
						if (typeof keys[i] === 'string')
						{
							this.shortcuts.handler(e, $.trim(keys[i]), handler);
						}
					}

				},
				buildHandler: function(command)
				{
					var func;
					if (command.func.search(/\./) !== '-1')
					{
						func = command.func.split('.');
						if (typeof this[func[0]] !== 'undefined')
						{
							this[func[0]][func[1]].apply(this, command.params);
						}
					}
					else
					{
						this[command.func].apply(this, command.params);
					}
				},
				handler: function(e, keys, origHandler)
				{
					keys = keys.toLowerCase().split(" ");

					var special = this.shortcuts.hotkeysSpecialKeys[e.keyCode];
					var character = String.fromCharCode(e.which).toLowerCase();
					var modif = "", possible = {};

					$.each([ "alt", "ctrl", "meta", "shift"], function(index, specialKey)
					{
						if (e[specialKey + 'Key'] && special !== specialKey)
						{
							modif += specialKey + '+';
						}
					});


					if (special)
					{
						possible[modif + special] = true;
					}

					if (character)
					{
						possible[modif + character] = true;
						possible[modif + this.shortcuts.hotkeysShiftNums[character]] = true;

						// "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
						if (modif === "shift+")
						{
							possible[this.shortcuts.hotkeysShiftNums[character]] = true;
						}
					}

					var len = keys.length;
					for (var i = 0; i < len; i++)
					{
						if (possible[keys[i]])
						{
							e.preventDefault();
							return origHandler.apply(this, arguments);
						}
					}
				}
			};
		},

		// =storage
		storage: function()
		{
			return {
				data: [],
				add: function(data)
				{
					// type, node, url, id
					data.status = true;
					data.url = decodeURI(this.link.removeSelfHostFromUrl(data.url));

					this.storage.data[data.url] = data;
				},
				status: function(url, status)
				{
					this.storage.data[decodeURI(url)].status = status;
				},
				observe: function()
				{
					var _this = this;

					var $images = this.core.editor().find('[data-image]');
					$images.each(function(i, s)
					{
						_this.storage.add({ type: 'image', node: s, url: s.src, id: $(s).attr('data-image') });
					});

					var $files = this.core.editor().find('[data-file]');
					$files.each(function(i, s)
					{
						_this.storage.add({ type: 'file', node: s, url: s.href, id: $(s).attr('data-file') });
					});

					var $s3 = this.core.editor().find('[data-s3]');
					$s3.each(function(i, s)
					{
						var url = (s.tagName === 'IMG') ? s.src : s.href;
						_this.storage.add({ type: 's3', node: s, url: url, id: $(s).attr('data-s3') });
					});

				},
				changes: function()
				{
					for (var key in this.storage.data)
					{
						var data = this.storage.data[key];
						var attr = (data.node.tagName === 'IMG') ? 'src' : 'href';
						var $el = this.core.editor().find('[data-' + data.type + '][' + attr + '="' + data.url + '"]');

						if ($el.length === 0)
						{
							this.storage.status(data.url, false);
						}
						else
						{
							this.storage.status(data.url, true);
						}
					}


					return this.storage.data;
				}

			};
		},

		// =toolbar
		toolbar: function()
		{
			return {
				build: function()
				{
					this.button.hideButtons();
					this.button.hideButtonsOnMobile();

					this.$toolbar = this.toolbar.createContainer();

					this.toolbar.append();
					this.button.$toolbar = this.$toolbar;
					this.button.setFormatting();
					this.button.load(this.$toolbar);
					this.toolbar.setFixed();

				},
				createContainer: function()
				{
					return $('<ul>').addClass('redactor-toolbar').attr({ 'id': 'redactor-toolbar-' + this.uuid, 'role': 'toolbar' });
				},
				append: function()
				{
					if (this.opts.toolbarExternal)
					{
						this.$toolbar.addClass('redactor-toolbar-external');
						$(this.opts.toolbarExternal).html(this.$toolbar);
					}
					else
					{
						if (this.opts.type === 'textarea')
						{
							this.$box.prepend(this.$toolbar);
						}
						else
						{
							this.$element.before(this.$toolbar);
						}

					}
				},
				setFixed: function()
				{
					if (!this.opts.toolbarFixed || this.opts.toolbarExternal)
					{
						return;
					}

					if (this.opts.toolbarFixedTarget !== document)
					{
						var $el = $(this.opts.toolbarFixedTarget);
						this.toolbarOffsetTop = ($el.length === 0) ? 0 : this.core.box().offset().top - $el.offset().top;
					}

					// bootstrap modal fix
					var late = (this.core.box().closest('.modal-body').length !== 0) ? 1000 : 0;

					setTimeout($.proxy(function()
					{
    					var self = this;
						this.toolbar.observeScroll(false);
						if (this.detect.isDesktop())
						{
							$(this.opts.toolbarFixedTarget).on('scroll.redactor.' + this.uuid, function()
							{
                                if (self.core.editor().height() < 100 || self.placeholder.isEditorEmpty())
            					{
                					return;
            					}

    							self.toolbar.observeScroll();
                            });
						}
						else
						{
							$(this.opts.toolbarFixedTarget).on('scroll.redactor.' + this.uuid, function()
							{
                                if (self.core.editor().height() < 100 || self.placeholder.isEditorEmpty())
            					{
                					return;
            					}

								self.core.toolbar().hide();
								clearTimeout($.data(this, "scrollCheck"));
								$.data(this, "scrollCheck", setTimeout(function()
								{
									self.core.toolbar().show();
									self.toolbar.observeScroll();
								}, 250) );

							});
						}

					}, this), late);

				},
				getBoxTop: function()
				{
					return (this.opts.toolbarFixedTarget === document) ? this.core.box().offset().top : this.toolbar.toolbarOffsetTop;
				},
				observeScroll: function(start)
				{
					// tolerance 0 if redactor in the hidden layer
					var tolerance = 0;

					if (start !== false)
					{
						tolerance = (this.opts.toolbarFixedTarget === document) ? 20 : 0;
					}

					var scrollTop = $(this.opts.toolbarFixedTarget).scrollTop();
					var boxTop = this.toolbar.getBoxTop();

                    if (scrollTop === boxTop)
                    {
                        return;
                    }

					if ((scrollTop + this.opts.toolbarFixedTopOffset + tolerance) > boxTop)
					{
						this.toolbar.observeScrollEnable(scrollTop, boxTop);
					}
					else
					{
						this.toolbar.observeScrollDisable();
					}
				},
				observeScrollResize: function()
				{
					this.$toolbar.css({

						width: this.core.box().innerWidth(),
						left: this.core.box().offset().left

					});
				},
				observeScrollEnable: function(scrollTop, boxTop)
				{
					if (typeof this.fullscreen !== 'undefined' && this.fullscreen.isOpened === false)
					{
						this.toolbar.observeScrollDisable();
						return;
					}

					var end = boxTop + this.core.box().outerHeight() - 32;
					var width = this.core.box().innerWidth();

					var position = (this.detect.isDesktop()) ? 'fixed' : 'absolute';
					var top = (this.detect.isDesktop()) ? this.opts.toolbarFixedTopOffset : ($(this.opts.toolbarFixedTarget).scrollTop() - boxTop + this.opts.toolbarFixedTopOffset);
					var left = (this.detect.isDesktop()) ? this.core.box().offset().left : 0;

					if (this.opts.toolbarFixedTarget !== document)
					{
						 position = 'absolute';
						 top = this.opts.toolbarFixedTopOffset + $(this.opts.toolbarFixedTarget).scrollTop() - boxTop;
						 left = 0;
					}

					this.$toolbar.addClass('toolbar-fixed-box');

					this.$toolbar.css({
						position: position,
						width: width,
						top: top,
						left: left
					});


					if (scrollTop > end)
					{
						$('.redactor-dropdown-' + this.uuid + ':visible').hide();
					}

					this.toolbar.setDropdownsFixed();

					this.$toolbar.css('visibility', (scrollTop < end) ? 'visible' : 'hidden');
					$(window).on('resize.redactor-toolbar.' + this.uuid, $.proxy(this.toolbar.observeScrollResize, this));
				},
				observeScrollDisable: function()
				{
					this.$toolbar.css({
						position: 'relative',
						width: 'auto',
						top: 0,
						left: 0,
						visibility: 'visible'
					});

					this.toolbar.unsetDropdownsFixed();
					this.$toolbar.removeClass('toolbar-fixed-box');
					$(window).off('resize.redactor-toolbar.' + this.uuid);
				},
				setDropdownsFixed: function()
				{
					var position = (this.opts.toolbarFixedTarget === document && this.detect.isDesktop()) ? 'fixed' : 'absolute';
					this.toolbar.setDropdownPosition(position);
				},
				unsetDropdownsFixed: function()
				{
					this.toolbar.setDropdownPosition('absolute');
				},
				setDropdownPosition: function(position)
				{
					var self = this;
					$('.redactor-dropdown-' + this.uuid).each(function()
					{
						var $el = $(this);
						var $button = self.button.get($el.attr('rel'));
						var top = (position === 'fixed') ? self.opts.toolbarFixedTopOffset : $button.offset().top;

						$el.css({ position: position, top: ($button.innerHeight() + top) + 'px' });
					});
				}
			};
		},

		// =upload
		upload: function()
		{
			return {
				init: function(id, url, callback)
				{
					this.upload.direct = false;
					this.upload.callback = callback;
					this.upload.url = url;
					this.upload.$el = $(id);
					this.upload.$droparea = $('<div id="redactor-droparea" />');

					this.upload.$placeholdler = $('<div id="redactor-droparea-placeholder" />').text(this.lang.get('upload-label'));
					this.upload.$input = $('<input type="file" name="file" />');

					this.upload.$placeholdler.append(this.upload.$input);
					this.upload.$droparea.append(this.upload.$placeholdler);
					this.upload.$el.append(this.upload.$droparea);

					this.upload.$droparea.off('redactor.upload');
					this.upload.$input.off('redactor.upload');

					this.upload.$droparea.on('dragover.redactor.upload', $.proxy(this.upload.onDrag, this));
					this.upload.$droparea.on('dragleave.redactor.upload', $.proxy(this.upload.onDragLeave, this));

					// change
					this.upload.$input.on('change.redactor.upload', $.proxy(function(e)
					{
						e = e.originalEvent || e;
						this.upload.traverseFile(this.upload.$input[0].files[0], e);
					}, this));

					// drop
					this.upload.$droparea.on('drop.redactor.upload', $.proxy(function(e)
					{
						e.preventDefault();

						this.upload.$droparea.removeClass('drag-hover').addClass('drag-drop');
						this.upload.onDrop(e);

					}, this));
				},
				directUpload: function(file, e)
				{
					this.upload.direct = true;
					this.upload.traverseFile(file, e);
				},
				onDrop: function(e)
				{
					e = e.originalEvent || e;
					var files = e.dataTransfer.files;

					if (this.opts.multipleImageUpload)
					{
						var len = files.length;
						for (var i = 0; i < len; i++)
						{
							this.upload.traverseFile(files[i], e);
						}
					}
					else
					{
						this.upload.traverseFile(files[0], e);
					}
				},
				traverseFile: function(file, e)
				{
					if (this.opts.s3)
					{
						this.upload.setConfig(file);
						this.uploads3.send(file, e);
						return;
					}

					var formData = !!window.FormData ? new FormData() : null;
					if (window.FormData)
					{
						this.upload.setConfig(file);

						var name = (this.upload.type === 'image') ? this.opts.imageUploadParam : this.opts.fileUploadParam;
						formData.append(name, file);
					}

					this.progress.show();
					this.core.callback('uploadStart', e, formData);
					this.upload.send(formData, e);
				},
				setConfig: function(file)
				{
					this.upload.getType(file);

					if (this.upload.direct)
					{
						this.upload.url = (this.upload.type === 'image') ? this.opts.imageUpload : this.opts.fileUpload;
						this.upload.callback = (this.upload.type === 'image') ? this.image.insert : this.file.insert;
					}
				},
				getType: function(file)
				{
					this.upload.type = (this.opts.imageTypes.indexOf(file.type) === -1) ? 'file' : 'image';

					if (this.opts.imageUpload === null && this.opts.fileUpload !== null)
					{
						this.upload.type = 'file';
					}
				},
				getHiddenFields: function(obj, fd)
				{
					if (obj === false || typeof obj !== 'object')
					{
						return fd;
					}

					$.each(obj, $.proxy(function(k, v)
					{
						if (v !== null && v.toString().indexOf('#') === 0)
						{
							v = $(v).val();
						}

						fd.append(k, v);

					}, this));

					return fd;

				},
				send: function(formData, e)
				{
					// append hidden fields
					if (this.upload.type === 'image')
					{
						formData = this.utils.appendFields(this.opts.imageUploadFields, formData);
						formData = this.utils.appendForms(this.opts.imageUploadForms, formData);
						formData = this.upload.getHiddenFields(this.upload.imageFields, formData);
					}
					else
					{
						formData = this.utils.appendFields(this.opts.fileUploadFields, formData);
						formData = this.utils.appendForms(this.opts.fileUploadForms, formData);
						formData = this.upload.getHiddenFields(this.upload.fileFields, formData);
					}

					var xhr = new XMLHttpRequest();
					xhr.open('POST', this.upload.url);
					xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");

					// complete
					xhr.onreadystatechange = $.proxy(function()
					{
					    if (xhr.readyState === 4)
					    {
					        var data = xhr.responseText;

							data = data.replace(/^\[/, '');
							data = data.replace(/\]$/, '');

							var json;
							try
							{
								json = (typeof data === 'string' ? JSON.parse(data) : data);
							}
							catch(err)
							{
								json = { error: true };
							}


							this.progress.hide();

							if (!this.upload.direct)
							{
								this.upload.$droparea.removeClass('drag-drop');
							}

							this.upload.callback(json, this.upload.direct, e);
					    }
					}, this);

					xhr.send(formData);
				},
				onDrag: function(e)
				{
					e.preventDefault();
					this.upload.$droparea.addClass('drag-hover');
				},
				onDragLeave: function(e)
				{
					e.preventDefault();
					this.upload.$droparea.removeClass('drag-hover');
				},
				clearImageFields: function()
				{
					this.upload.imageFields = {};
				},
				addImageFields: function(name, value)
				{
					this.upload.imageFields[name] = value;
				},
				removeImageFields: function(name)
				{
					delete this.upload.imageFields[name];
				},
				clearFileFields: function()
				{
					this.upload.fileFields = {};
				},
				addFileFields: function(name, value)
				{
					this.upload.fileFields[name] = value;
				},
				removeFileFields: function(name)
				{
					delete this.upload.fileFields[name];
				}
			};
		},

		// =s3
		uploads3: function()
		{
			return {
				send: function(file, e)
				{
					this.uploads3.executeOnSignedUrl(file, $.proxy(function(signedURL)
					{
						this.uploads3.sendToS3(file, signedURL, e);
					}, this));
				},
				executeOnSignedUrl: function(file, callback)
				{
					var xhr = new XMLHttpRequest();
					var mark = (this.opts.s3.search(/\?/) === -1) ? '?' : '&';

					xhr.open('GET', this.opts.s3 + mark + 'name=' + file.name + '&type=' + file.type, true);

					// hack to pass bytes through unprocessed.
					if (xhr.overrideMimeType)
					{
						xhr.overrideMimeType('text/plain; charset=x-user-defined');
					}

					var that = this;
					xhr.onreadystatechange = function(e)
					{
						if (this.readyState === 4 && this.status === 200)
						{
							that.progress.show();
							callback(decodeURIComponent(this.responseText));
						}
					};

					xhr.send();
				},
				createCORSRequest: function(method, url)
				{
					var xhr = new XMLHttpRequest();
					if ("withCredentials" in xhr)
					{
						xhr.open(method, url, true);
					}
					else if (typeof XDomainRequest !== "undefined")
					{
						xhr = new XDomainRequest();
						xhr.open(method, url);
					}
					else
					{
						xhr = null;
					}

					return xhr;
				},
				sendToS3: function(file, url, e)
				{
					var xhr = this.uploads3.createCORSRequest('PUT', url);
					if (!xhr)
					{
						return;
					}

					xhr.onload = $.proxy(function()
					{
						var json;

						this.progress.hide();

						if (xhr.status !== 200)
						{
							// error
							json = { error: true };
							this.upload.callback(json, this.upload.direct, xhr);

							return;
						}

						var s3file = url.split('?');

						if (!s3file[0])
						{
							 // url parsing is fail
							 return false;
						}


						if (!this.upload.direct)
						{
							this.upload.$droparea.removeClass('drag-drop');
						}

						json = { url: s3file[0], id: s3file[0], s3: true };
						if (this.upload.type === 'file')
						{
							var arr = s3file[0].split('/');
							json.name = arr[arr.length-1];
						}

						this.upload.callback(json, this.upload.direct, e);


					}, this);

					xhr.onerror = function() {};
					xhr.upload.onprogress = function(e) {};

					xhr.setRequestHeader('Content-Type', file.type);
					xhr.setRequestHeader('x-amz-acl', 'public-read');

					xhr.send(file);

				}
			};
		},

		// =utils
		utils: function()
		{
			return {
				isEmpty: function(html)
				{
					html = (typeof html === 'undefined') ? this.core.editor().html() : html;

					html = html.replace(/[\u200B-\u200D\uFEFF]/g, '');
					html = html.replace(/&nbsp;/gi, '');
					html = html.replace(/<\/?br\s?\/?>/g, '');
					html = html.replace(/\s/g, '');
					html = html.replace(/^<p>[^\W\w\D\d]*?<\/p>$/i, '');
					html = html.replace(/<iframe(.*?[^>])>$/i, 'iframe');
					html = html.replace(/<source(.*?[^>])>$/i, 'source');

					// remove empty tags
					html = html.replace(/<[^\/>][^>]*><\/[^>]+>/gi, '');
					html = html.replace(/<[^\/>][^>]*><\/[^>]+>/gi, '');

					html = $.trim(html);

					return html === '';
				},
				isElement: function(obj)
				{
					try {
						// Using W3 DOM2 (works for FF, Opera and Chrome)
						return obj instanceof HTMLElement;
					}
					catch(e)
					{
						return (typeof obj === "object") && (obj.nodeType === 1) && (typeof obj.style === "object") && (typeof obj.ownerDocument === "object");
					}
				},
				strpos: function(haystack, needle, offset)
				{
					var i = haystack.indexOf(needle, offset);
					return i >= 0 ? i : false;
				},
				dataURItoBlob: function(dataURI)
				{
					var byteString;
					if (dataURI.split(',')[0].indexOf('base64') >= 0)
					{
						byteString = atob(dataURI.split(',')[1]);
					}
					else
					{
						byteString = unescape(dataURI.split(',')[1]);
					}

					var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];

					var ia = new Uint8Array(byteString.length);
					for (var i = 0; i < byteString.length; i++)
					{
						ia[i] = byteString.charCodeAt(i);
					}

					return new Blob([ia], { type:mimeString });
				},
				getOuterHtml: function(el)
				{
					return $('<div>').append($(el).eq(0).clone()).html();
				},
				cloneAttributes: function(from, to)
				{
					from = from[0] || from;
					to = $(to);

					var attrs = from.attributes;
					var len = attrs.length;
					while (len--)
					{
					    var attr = attrs[len];
					    to.attr(attr.name, attr.value);
					}

					return to;
				},
				breakBlockTag: function()
				{
					var block = this.selection.block();
					if (!block)
					{
    					return false;
					}

					var isEmpty = this.utils.isEmpty(block.innerHTML);

					var tag = block.tagName.toLowerCase();
					if (tag === 'pre' || tag === 'li' || tag === 'td' || tag === 'th')
					{
						return false;
					}


					if (!isEmpty && this.utils.isStartOfElement(block))
					{
						return { $block: $(block), $next: $(block).next(), type: 'start' };
					}
					else if (!isEmpty && this.utils.isEndOfElement(block))
					{
						return { $block: $(block), $next: $(block).next(), type: 'end' };
					}
					else
					{
						var endOfNode = this.selection.extractEndOfNode(block);
						var $nextPart = $('<' + tag + ' />').append(endOfNode);

						$nextPart = this.utils.cloneAttributes(block, $nextPart);
						$(block).after($nextPart);

						return { $block: $(block), $next: $nextPart, type: 'break' };
					}
				},
				// tag detection
				inBlocks: function(tags)
				{
					tags = ($.isArray(tags)) ? tags : [tags];

					var blocks = this.selection.blocks();
					var len = blocks.length;
					var contains = false;
					for (var i = 0; i < len; i++)
					{
						if (blocks[i] !== false)
						{
							var tag = blocks[i].tagName.toLowerCase();

							if ($.inArray(tag, tags) !== -1)
							{
								contains = true;
							}
						}
					}

					return contains;

				},
				inInlines: function(tags)
				{
					tags = ($.isArray(tags)) ? tags : [tags];

					var inlines = this.selection.inlines();
					var len = inlines.length;
					var contains = false;
					for (var i = 0; i < len; i++)
					{
						var tag = inlines[i].tagName.toLowerCase();

						if ($.inArray(tag, tags) !== -1)
						{
							contains = true;
						}
					}

					return contains;

				},
				isTag: function(current, tag)
				{
					var element = $(current).closest(tag, this.core.editor()[0]);
					if (element.length === 1)
					{
						return element[0];
					}

					return false;
				},
				isBlock: function(block)
				{
					if (block === null)
					{
						return false;
					}

					block = block[0] || block;

					return block && this.utils.isBlockTag(block.tagName);
				},
				isBlockTag: function(tag)
				{
					return (typeof tag === 'undefined') ? false : this.reIsBlock.test(tag);
				},
				isInline: function(inline)
				{
					inline = inline[0] || inline;

					return inline && this.utils.isInlineTag(inline.tagName);
				},
				isInlineTag: function(tag)
				{
					return (typeof tag === 'undefined') ? false : this.reIsInline.test(tag);
				},
				// parents detection
				isRedactorParent: function(el)
				{
					if (!el)
					{
						return false;
					}

					if ($(el).parents('.redactor-in').length === 0 || $(el).hasClass('redactor-in'))
					{
						return false;
					}

					return el;
				},
				isCurrentOrParentHeader: function()
				{
					return this.utils.isCurrentOrParent(['H1', 'H2', 'H3', 'H4', 'H5', 'H6']);
				},
				isCurrentOrParent: function(tagName)
				{
					var parent = this.selection.parent();
					var current = this.selection.current();

					if ($.isArray(tagName))
					{
						var matched = 0;
						$.each(tagName, $.proxy(function(i, s)
						{
							if (this.utils.isCurrentOrParentOne(current, parent, s))
							{
								matched++;
							}
						}, this));

						return (matched === 0) ? false : true;
					}
					else
					{
						return this.utils.isCurrentOrParentOne(current, parent, tagName);
					}
				},
				isCurrentOrParentOne: function(current, parent, tagName)
				{
					tagName = tagName.toUpperCase();

					return parent && parent.tagName === tagName ? parent : current && current.tagName === tagName ? current : false;
				},
				isEditorRelative: function()
				{
					var position = this.core.editor().css('position');
					var arr = ['absolute', 'fixed', 'relative'];

					return ($.inArray(arr, position) !== -1);
				},
				setEditorRelative: function()
				{
					this.core.editor().addClass('redactor-relative');
				},
				// scroll
				getScrollTarget: function()
				{
    				var $scrollTarget = $(this.opts.scrollTarget);

    				return ($scrollTarget.length !== 0) ? $scrollTarget : $(document);
				},
				freezeScroll: function()
				{
					this.freezeScrollTop = this.utils.getScrollTarget().scrollTop();
					this.utils.getScrollTarget().scrollTop(this.freezeScrollTop);
				},
				unfreezeScroll: function()
				{
					if (typeof this.freezeScrollTop === 'undefined')
					{
						return;
					}

					this.utils.getScrollTarget().scrollTop(this.freezeScrollTop);
				},
				saveScroll: function()
				{
					this.tmpScrollTop = this.utils.getScrollTarget().scrollTop();
				},
				restoreScroll: function()
				{
					if (typeof this.tmpScrollTop === 'undefined')
					{
						return;
					}

					this.utils.getScrollTarget().scrollTop(this.tmpScrollTop);
				},
				isStartOfElement: function(element)
				{
					if (typeof element === 'undefined')
					{
						element = this.selection.block();
						if (!element)
						{
							return false;
						}
					}

					return (this.offset.get(element) === 0) ? true : false;
				},
				isEndOfElement: function(element)
				{
					if (typeof element === 'undefined')
					{
						element = this.selection.block();
						if (!element)
						{
							return false;
						}
					}

					var text = $.trim($(element).text()).replace(/[\t\n\r\n]/g, '').replace(/\u200B/g, '');
					var offset = this.offset.get(element);

					return (offset === text.length) ? true : false;
				},
				removeEmptyAttr: function(el, attr)
				{
					var $el = $(el);
					if (typeof $el.attr(attr) === 'undefined')
					{
						return true;
					}

					if ($el.attr(attr) === '')
					{
						$el.removeAttr(attr);
						return true;
					}

					return false;
				},
				replaceToTag: function(node, tag)
				{
					var replacement;
					$(node).replaceWith(function()
					{
						replacement = $('<' + tag + ' />').append($(this).contents());

						for (var i = 0; i < this.attributes.length; i++)
						{
							replacement.attr(this.attributes[i].name, this.attributes[i].value);
						}

						return replacement;
					});

					return replacement;
				},
				// select all
				isSelectAll: function()
				{
					return this.selectAll;
				},
				enableSelectAll: function()
				{
					this.selectAll = true;
				},
				disableSelectAll: function()
				{
					this.selectAll = false;
				},
				disableBodyScroll: function()
				{
					var $body = $('html');
					var windowWidth = window.innerWidth;
					if (!windowWidth)
					{
						var documentElementRect = document.documentElement.getBoundingClientRect();
						windowWidth = documentElementRect.right - Math.abs(documentElementRect.left);
					}

					var isOverflowing = document.body.clientWidth < windowWidth;
					var scrollbarWidth = this.utils.measureScrollbar();

					$body.css('overflow', 'hidden');
					if (isOverflowing)
					{
						$body.css('padding-right', scrollbarWidth);
					}
				},
				measureScrollbar: function()
				{
					var $body = $('body');
					var scrollDiv = document.createElement('div');
					scrollDiv.className = 'redactor-scrollbar-measure';

					$body.append(scrollDiv);
					var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
					$body[0].removeChild(scrollDiv);
					return scrollbarWidth;
				},
				enableBodyScroll: function()
				{
					$('html').css({ 'overflow': '', 'padding-right': '' });
					$('body').remove('redactor-scrollbar-measure');
				},
				appendFields: function(appendFields, data)
				{
					if (!appendFields)
					{
						return data;
					}
					else if (typeof appendFields === 'object')
					{
    					$.each(appendFields, function(k, v)
    					{
    						if (v !== null && v.toString().indexOf('#') === 0)
    						{
        						v = $(v).val();
                            }

    						data.append(k, v);

    					});

    					return data;
					}

					var $fields = $(appendFields);
					if ($fields.length === 0)
					{
						return data;
					}
					else
					{
						var str = '';
						$fields.each(function()
						{
							data.append($(this).attr('name'), $(this).val());
						});

						return data;
					}
				},
				appendForms: function(appendForms, data)
				{
					if (!appendForms)
					{
						return data;
					}

					var $forms = $(appendForms);
					if ($forms.length === 0)
					{
						return data;
					}
					else
					{
						var formData = $forms.serializeArray();

						$.each(formData, function(z,f)
						{
							data.append(f.name, f.value);
						});

						return data;
					}
				},
				isRgb: function(str)
				{
                    return (str.search(/^rgb/i) === 0);
				},
				rgb2hex: function(rgb)
				{
                    rgb = rgb.match(/^rgba?[\s+]?\([\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?/i);

                    return (rgb && rgb.length === 4) ? "#" +
                    ("0" + parseInt(rgb[1],10).toString(16)).slice(-2) +
                    ("0" + parseInt(rgb[2],10).toString(16)).slice(-2) +
                    ("0" + parseInt(rgb[3],10).toString(16)).slice(-2) : '';
                },

				// #backward
				isCollapsed: function()
				{
					return this.selection.isCollapsed();
				},
				isMobile: function()
				{
					return this.detect.isMobile();
				},
				isDesktop: function()
				{
					return this.detect.isDesktop();
				},
				isPad: function()
				{
					return this.detect.isIpad();
				}

			};
		},

		// #backward
		browser: function()
		{
			return {
				webkit: function()
				{
					return this.detect.isWebkit();
				},
				ff: function()
				{
					return this.detect.isFirefox();
				},
				ie: function()
				{
					return this.detect.isIe();
				}
			};
		}
	};

	$(window).on('load.tools.redactor', function()
	{
		$('[data-tools="redactor"]').redactor();
	});

	// constructor
	Redactor.prototype.init.prototype = Redactor.prototype;

})(jQuery);

(function($)
{
	$.fn.redactorAnimation = function(animation, options, callback)
	{
		return this.each(function()
		{
			new redactorAnimation(this, animation, options, callback);
		});
	};

	function redactorAnimation(element, animation, options, callback)
	{
		// default
		var opts = {
			duration: 0.5,
			iterate: 1,
			delay: 0,
			prefix: 'redactor-',
			timing: 'linear'
		};

		this.animation = animation;
		this.slide = (this.animation === 'slideDown' || this.animation === 'slideUp');
		this.$element = $(element);
		this.prefixes = ['', '-moz-', '-o-animation-', '-webkit-'];
		this.queue = [];

		// options or callback
		if (typeof options === 'function')
		{
			callback = options;
			this.opts = opts;
		}
		else
		{
			this.opts = $.extend(opts, options);
		}

		// slide
		if (this.slide)
		{
			this.$element.height(this.$element.height());
		}

		// init
		this.init(callback);

	}

	redactorAnimation.prototype = {

		init: function(callback)
		{
			this.queue.push(this.animation);

			this.clean();

			if (this.animation === 'show')
			{
				this.opts.timing = 'linear';
				this.$element.removeClass('hide').show();

				if (typeof callback === 'function')
				{
					callback(this);
				}
			}
			else if (this.animation === 'hide')
			{
				this.opts.timing = 'linear';
				this.$element.hide();

				if (typeof callback === 'function')
				{
					callback(this);
				}
			}
			else
			{
				this.animate(callback);
			}

		},
		animate: function(callback)
		{
			this.$element.addClass('redactor-animated').css('display', '').removeClass('hide');
			this.$element.addClass(this.opts.prefix + this.queue[0]);

			this.set(this.opts.duration + 's', this.opts.delay + 's', this.opts.iterate, this.opts.timing);

			var _callback = (this.queue.length > 1) ? null : callback;
			this.complete('AnimationEnd', $.proxy(function()
			{
				if (this.$element.hasClass(this.opts.prefix + this.queue[0]))
				{
					this.clean();
					this.queue.shift();

					if (this.queue.length)
					{
						this.animate(callback);
					}
				}

			}, this), _callback);
		},
		set: function(duration, delay, iterate, timing)
		{
			var len = this.prefixes.length;

			while (len--)
			{
				this.$element.css(this.prefixes[len] + 'animation-duration', duration);
				this.$element.css(this.prefixes[len] + 'animation-delay', delay);
				this.$element.css(this.prefixes[len] + 'animation-iteration-count', iterate);
				this.$element.css(this.prefixes[len] + 'animation-timing-function', timing);
			}

		},
		clean: function()
		{
			this.$element.removeClass('redactor-animated');
			this.$element.removeClass(this.opts.prefix + this.queue[0]);

			this.set('', '', '', '');

		},
		complete: function(type, make, callback)
		{
			this.$element.one(type.toLowerCase() + ' webkit' + type + ' o' + type + ' MS' + type, $.proxy(function()
			{
				if (typeof make === 'function')
				{
					make();
				}

				if (typeof callback === 'function')
				{
					callback(this);
				}

				// hide
				var effects = ['fadeOut', 'slideUp', 'zoomOut', 'slideOutUp', 'slideOutRight', 'slideOutLeft'];
				if ($.inArray(this.animation, effects) !== -1)
				{
					this.$element.css('display', 'none');
				}

				// slide
				if (this.slide)
				{
					this.$element.css('height', '');
				}

			}, this));

		}
	};

})(jQuery);
