text: /*
   * jQuery UI Sortable
   *
   * Copyright (c) 2008 Paul Bakaus
   * Dual licensed under the MIT (MIT-LICENSE.txt)
   * and GPL (GPL-LICENSE.txt) licenses.
   *
   * http://docs.jquery.com/UI/Sortables
   *
   * Depends:
   *   ui.base.js
   *
   * Revision: $Id: ui.sortable.js 5199 2008-04-04 14:04:32Z paul.bakaus $
   */
  ;(function($) {
  
  	if (window.Node && Node.prototype && !Node.prototype.contains) {
  		Node.prototype.contains = function (arg) {
  			return !!(this.compareDocumentPosition(arg) & 16);
  		};
  	}
  
  	$.fn.extend({
  		sortable: function(options) {
  
  			var args = Array.prototype.slice.call(arguments, 1);
  
  			if (options == "serialize" || options == "toArray")
  				return $.data(this[0], "sortable")[options](arguments[1]);
  
  			return this.each(function() {
  				if (typeof options == "string") {
  					var sort = $.data(this, "sortable");
  					if (sort) sort[options].apply(sort, args);
  
  				} else if(!$.data(this, "sortable"))
  					new $.ui.sortable(this, options);
  			});
  		}
  	});
  
  	$.ui.sortable = function(element, options) {
  		//Initialize needed constants
  		var self = this;
  
  		this.element = $(element);
  		this.containerCache = {};
  
  		$.data(element, "sortable", this);
  		this.element.addClass("ui-sortable");
  
  		//Prepare the passed options
  		this.options = $.extend({}, options);
  		var o = this.options;
  		$.extend(o, {
  			items: this.options.items || '> *',
  			zIndex: this.options.zIndex || 1000,
  			startCondition: function() {
  				return !self.options.disabled;
  			}
  		});
  
  		$(element).bind("setData.sortable", function(event, key, value){
  			self.options[key] = value;
  		}).bind("getData.sortable", function(event, key){
  			return self.options[key];
  		});
  
  		//Get the items
  		this.refresh();
  
  		//Let's determine if the items are floating
  		this.floating = this.items.length ? (/left|right/).test(this.items[0].item.css('float')) : false;
  
  		//Let's determine the parent's offset
  		if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
  		this.offset = this.element.offset();
  
  		//Initialize mouse events for interaction
  		this.element.mouseInteraction({
  			executor: this,
  			delay: o.delay,
  			distance: o.distance || 0,
  			dragPrevention: o.prevention ? o.prevention.toLowerCase().split(',') : ['input','textarea','button','select','option'],
  			start: this.start,
  			stop: this.stop,
  			drag: this.drag,
  			condition: function(e) {
  
  				if(this.options.disabled || this.options.type == 'static') return false;
  
  				//Find out if the clicked node (or one of its parents) is a actual item in this.items
  				var currentItem = null, nodes = $(e.target).parents().each(function() {
  					if($.data(this, 'sortable-item')) {
  						currentItem = $(this);
  						return false;
  					}
  				});
  				if($.data(e.target, 'sortable-item')) currentItem = $(e.target);
  
  				if(!currentItem) return false;
  				if(this.options.handle) {
  					var validHandle = false;
  					$(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
  					if(!validHandle) return false;
  				}
  
  				this.currentItem = currentItem;
  				return true;
  
  			}
  		});
  
  		//Prepare cursorAt
  		if(o.cursorAt && o.cursorAt.constructor == Array)
  			o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] };
  	};
  
  	$.extend($.ui.sortable.prototype, {
  		plugins: {},
  		ui: function(inst) {
  			return {
  				helper: (inst || this)["helper"],
  				placeholder: (inst || this)["placeholder"] || $([]),
  				position: (inst || this)["position"].current,
  				absolutePosition: (inst || this)["position"].absolute,
  				instance: this,
  				options: this.options,
  				element: this.element,
  				item: (inst || this)["currentItem"],
  				sender: inst ? inst.element : null
  			};
  		},
  		propagate: function(n,e,inst) {
  			$.ui.plugin.call(this, n, [e, this.ui(inst)]);
  			this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
  		},
  		serialize: function(o) {
  
  			var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
  			var str = []; o = o || {};
  
  			items.each(function() {
  				var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
  				if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
  			});
  
  			return str.join('&');
  
  		},
  		toArray: function(attr) {
  			var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
  			var ret = [];
  
  			items.each(function() { ret.push($(this).attr(attr || 'id')); });
  			return ret;
  		},
  		enable: function() {
  			this.element.removeClass("ui-sortable-disabled");
  			this.options.disabled = false;
  		},
  		disable: function() {
  			this.element.addClass("ui-sortable-disabled");
  			this.options.disabled = true;
  		},
  		/* Be careful with the following core functions */
  		intersectsWith: function(item) {
  
  			var x1 = this.position.absolute.left, x2 = x1 + this.helperProportions.width,
  			    y1 = this.position.absolute.top, y2 = y1 + this.helperProportions.height;
  			var l = item.left, r = l + item.width,
  			    t = item.top,  b = t + item.height;
  
  			return (   l < x1 + (this.helperProportions.width  / 2)    // Right Half
  				&&     x2 - (this.helperProportions.width  / 2) < r    // Left Half
  				&& t < y1 + (this.helperProportions.height / 2)        // Bottom Half
  				&&     y2 - (this.helperProportions.height / 2) < b ); // Top Half
  
  		},
  		intersectsWithEdge: function(item) {
  			var x1 = this.position.absolute.left, x2 = x1 + this.helperProportions.width,
  			    y1 = this.position.absolute.top, y2 = y1 + this.helperProportions.height;
  			var l = item.left, r = l + item.width,
  			    t = item.top,  b = t + item.height;
  
  
  			if (!(   l < x1 + (this.helperProportions.width  / 2)    // Right Half
  				&&     x2 - (this.helperProportions.width  / 2) < r    // Left Half
  				&& t < y1 + (this.helperProportions.height / 2)        // Bottom Half
  				&&     y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
  
  			if(this.floating) {
  				if(x2 > l && x1 < l) return 2; //Crosses left edge
  				if(x1 < r && x2 > r) return 1; //Crosses right edge
  			} else {
  				if(y2 > t && y1 < t) return 1; //Crosses top edge
  				if(y1 < b && y2 > b) return 2; //Crosses bottom edge
  			}
  
  			return false;
  
  		},
  		//This method checks approximately if the item is dragged in a container, but doesn't touch any items
  		inEmptyZone: function(container) {
  
  			if(!$(container.options.items, container.element).length) {
  				return container.options.dropOnEmpty ? true : false;
  			};
  
  			var last = $(container.options.items, container.element).not('.ui-sortable-helper'); last = $(last[last.length-1]);
  			var top = last.offset()[this.floating ? 'left' : 'top'] + last[0][this.floating ? 'offsetWidth' : 'offsetHeight'];
  			return (this.position.absolute[this.floating ? 'left' : 'top'] > top);
  		},
  		refresh: function() {
  			this.refreshItems();
  			this.refreshPositions();
  		},
  		refreshItems: function() {
  
  			this.items = [];
  			this.containers = [this];
  			var items = this.items;
  			var queries = [$(this.options.items, this.element)];
  
  			if(this.options.connectWith) {
  				for (var i = this.options.connectWith.length - 1; i >= 0; i--){
  					var cur = $(this.options.connectWith[i]);
  					for (var j = cur.length - 1; j >= 0; j--){
  						var inst = $.data(cur[j], 'sortable');
  						if(inst && !inst.options.disabled) {
  							queries.push($(inst.options.items, inst.element));
  							this.containers.push(inst);
  						}
  					};
  				};
  			}
  
  			for (var i = queries.length - 1; i >= 0; i--){
  				queries[i].each(function() {
  					$.data(this, 'sortable-item', true); // Data for target checking (mouse manager)
  					items.push({
  						item: $(this),
  						width: 0, height: 0,
  						left: 0, top: 0
  					});
  				});
  			};
  
  		},
  		refreshPositions: function(fast) {
  			for (var i = this.items.length - 1; i >= 0; i--){
  				if(!fast) this.items[i].width 			= this.items[i].item.outerWidth();
  				if(!fast) this.items[i].height 			= this.items[i].item.outerHeight();
  				var p = this.items[i].item.offset();
  				this.items[i].left 						= p.left;
  				this.items[i].top 						= p.top;
  			};
  			for (var i = this.containers.length - 1; i >= 0; i--){
  				var p =this.containers[i].element.offset();
  				this.containers[i].containerCache.left 	= p.left;
  				this.containers[i].containerCache.top 	= p.top;
  				this.containers[i].containerCache.width	= this.containers[i].element.outerWidth();
  				this.containers[i].containerCache.height= this.containers[i].element.outerHeight();
  			};
  		},
  		destroy: function() {
  			this.element
  				.removeClass("ui-sortable ui-sortable-disabled")
  				.removeData("sortable")
  				.unbind(".sortable")
  				.removeMouseInteraction();
  
  			for ( var i = this.items.length - 1; i >= 0; i-- )
  				this.items[i].item.removeData("sortable-item");
  		},
  		createPlaceholder: function(that) {
  			(that || this).placeholderElement = this.options.placeholderElement ? $(this.options.placeholderElement, (that || this).currentItem) : (that || this).currentItem;
  			(that || this).placeholder = $('<div></div>')
  				.addClass(this.options.placeholder)
  				.appendTo('body')
  				.css({ position: 'absolute' })
  				.css((that || this).placeholderElement.offset())
  				.css({ width: (that || this).placeholderElement.outerWidth(), height: (that || this).placeholderElement.outerHeight() })
  				;
  		},
  		contactContainers: function(e) {
  			for (var i = this.containers.length - 1; i >= 0; i--){
  
  				if(this.intersectsWith(this.containers[i].containerCache)) {
  					if(!this.containers[i].containerCache.over) {
  
  
  						if(this.currentContainer != this.containers[i]) {
  
  							//When entering a new container, we will find the item with the least distance and append our item near it
  							var dist = 10000; var itemWithLeastDistance = null; var base = this.position.absolute[this.containers[i].floating ? 'left' : 'top'];
  							for (var j = this.items.length - 1; j >= 0; j--) {
  								if(!this.containers[i].element[0].contains(this.items[j].item[0])) continue;
  								var cur = this.items[j][this.containers[i].floating ? 'left' : 'top'];
  								if(Math.abs(cur - base) < dist) {
  									dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
  								}
  							}
  
  							//We also need to exchange the placeholder
  							if(this.placeholder) this.placeholder.remove();
  							if(this.containers[i].options.placeholder) {
  								this.containers[i].createPlaceholder(this);
  							} else {
  								this.placeholder = null; this.placeholderElement = null;
  							}
  
  
  							itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
  							this.propagate("change", e); //Call plugins and callbacks
  							this.containers[i].propagate("change", e, this); //Call plugins and callbacks
  							this.currentContainer = this.containers[i];
  
  						}
  
  						this.containers[i].propagate("over", e, this);
  						this.containers[i].containerCache.over = 1;
  					}
  				} else {
  					if(this.containers[i].containerCache.over) {
  						this.containers[i].propagate("out", e, this);
  						this.containers[i].containerCache.over = 0;
  					}
  				}
  
  			};
  		},
  		start: function(e,el) {
  
  			var o = this.options;
  			this.refresh();
  
  			//Create and append the visible helper
  			this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
  			if(!this.helper.parents('body').length) this.helper.appendTo(o.appendTo || this.currentItem[0].parentNode); //Add the helper to the DOM if that didn't happen already
  			this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortable-helper'); //Position it absolutely and add a helper class
  
  			//Prepare variables for position generation
  			$.extend(this, {
  				offsetParent: this.helper.offsetParent(),
  				offsets: {
  					absolute: this.currentItem.offset()
  				},
  				mouse: {
  					start: { top: e.pageY, left: e.pageX }
  				},
  				margins: {
  					top: parseInt(this.currentItem.css("marginTop")) || 0,
  					left: parseInt(this.currentItem.css("marginLeft")) || 0
  				}
  			});
  
  			//The relative click offset
  			this.offsets.parent = this.offsetParent.offset();
  			this.clickOffset = { left: e.pageX - this.offsets.absolute.left, top: e.pageY - this.offsets.absolute.top };
  
  			this.originalPosition = {
  				left: this.offsets.absolute.left - this.offsets.parent.left - this.margins.left,
  				top: this.offsets.absolute.top - this.offsets.parent.top - this.margins.top
  			}
  
  			//Generate a flexible offset that will later be subtracted from e.pageX/Y
  			//I hate margins - they need to be removed before positioning the element absolutely..
  			this.offset = {
  				left: e.pageX - this.originalPosition.left,
  				top: e.pageY - this.originalPosition.top
  			};
  
  			//Save the first time position
  			$.extend(this, {
  				position: {
  					current: { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left },
  					absolute: { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top },
  					dom: this.currentItem.prev()[0]
  				}
  			});
  
  			//If o.placeholder is used, create a new element at the given position with the class
  			if(o.placeholder) this.createPlaceholder();
  
  			this.propagate("start", e); //Call plugins and callbacks
  			this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions
  
  			//If we have something in cursorAt, we'll use it
  			if(o.cursorAt) {
  				if(o.cursorAt.top != undefined || o.cursorAt.bottom != undefined) {
  					this.offset.top -= this.clickOffset.top - (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom));
  					this.clickOffset.top = (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom));
  				}
  				if(o.cursorAt.left != undefined || o.cursorAt.right != undefined) {
  					this.offset.left -= this.clickOffset.left - (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right));
  					this.clickOffset.left = (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right));
  				}
  			}
  
  			if(this.options.placeholder != 'clone') $(this.currentItem).css('visibility', 'hidden'); //Set the original element visibility to hidden to still fill out the white space
  			for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i].propagate("activate", e, this); } //Post 'activate' events to possible containers
  
  			//Prepare possible droppables
  			if($.ui.ddmanager) $.ui.ddmanager.current = this;
  			if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
  
  			this.dragging = true;
  			return false;
  
  		},
  		stop: function(e) {
  
  			this.propagate("stop", e); //Call plugins and trigger callbacks
  			if(this.position.dom != this.currentItem.prev()[0]) this.propagate("update", e); //Trigger update callback if the DOM position has changed
  			if(!this.element[0].contains(this.currentItem[0])) { //Node was moved out of the current element
  				this.propagate("remove", e);
  				for (var i = this.containers.length - 1; i >= 0; i--){
  					if(this.containers[i].element[0].contains(this.currentItem[0])) {
  						this.containers[i].propagate("update", e, this);
  						this.containers[i].propagate("receive", e, this);
  					}
  				};
  			};
  
  			//Post events to containers
  			for (var i = this.containers.length - 1; i >= 0; i--){
  				this.containers[i].propagate("deactivate", e, this);
  				if(this.containers[i].containerCache.over) {
  					this.containers[i].propagate("out", e, this);
  					this.containers[i].containerCache.over = 0;
  				}
  			}
  
  			//If we are using droppables, inform the manager about the drop
  			if ($.ui.ddmanager && !this.options.dropBehaviour) $.ui.ddmanager.drop(this, e);
  
  			this.dragging = false;
  			if(this.cancelHelperRemoval) return false;
  			$(this.currentItem).css('visibility', '');
  			if(this.placeholder) this.placeholder.remove();
  			this.helper.remove();
  
  			return false;
  
  		},
  		drag: function(e) {
  
  			//Compute the helpers position
  			this.position.current = { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left };
  			this.position.absolute = { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top };
  
  			//Rearrange
  			for (var i = this.items.length - 1; i >= 0; i--) {
  				var intersection = this.intersectsWithEdge(this.items[i]);
  				if(!intersection) continue;
  
  				if(     this.items[i].item[0] != this.currentItem[0] //cannot intersect with itself
  					&&	this.currentItem[intersection == 1 ? "next" : "prev"]()[0] != this.items[i].item[0] //no useless actions that have been done before
  					&&	!this.currentItem[0].contains(this.items[i].item[0]) //no action if the item moved is the parent of the item checked
  					&& (this.options.type == 'semi-dynamic' ? !this.element[0].contains(this.items[i].item[0]) : true)
  				) {
  
  					this.direction = intersection == 1 ? "down" : "up";
  					this.rearrange(e, this.items[i]);
  					this.propagate("change", e); //Call plugins and callbacks
  					break;
  				}
  			}
  
  			//Post events to containers
  			this.contactContainers(e);
  
  			//Interconnect with droppables
  			if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
  
  			this.propagate("sort", e); //Call plugins and callbacks
  			this.helper.css({ left: this.position.current.left+'px', top: this.position.current.top+'px' }); // Stick the helper to the cursor
  			return false;
  
  		},
  		rearrange: function(e, i, a) {
  			a ? a.append(this.currentItem) : i.item[this.direction == 'down' ? 'before' : 'after'](this.currentItem);
  			this.refreshPositions(true); //Precompute after each DOM insertion, NOT on mousemove
  			if(this.placeholderElement) this.placeholder.css(this.placeholderElement.offset());
  		}
  	});
  
  /*
   * Sortable Extensions
   */
  
  	$.ui.plugin.add("sortable", "cursor", {
  		start: function(e, ui) {
  			var t = $('body');
  			if (t.css("cursor")) ui.options._cursor = t.css("cursor");
  			t.css("cursor", ui.options.cursor);
  		},
  		stop: function(e, ui) {
  			if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);
  		}
  	});
  
  	$.ui.plugin.add("sortable", "zIndex", {
  		start: function(e, ui) {
  			var t = ui.helper;
  			if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex");
  			t.css('zIndex', ui.options.zIndex);
  		},
  		stop: function(e, ui) {
  			if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex);
  		}
  	});
  
  	$.ui.plugin.add("sortable", "opacity", {
  		start: function(e, ui) {
  			var t = ui.helper;
  			if(t.css("opacity")) ui.options._opacity = t.css("opacity");
  			t.css('opacity', ui.options.opacity);
  		},
  		stop: function(e, ui) {
  			if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
  		}
  	});
  
  
  	$.ui.plugin.add("sortable", "revert", {
  		stop: function(e, ui) {
  			var self = ui.instance;
  			self.cancelHelperRemoval = true;
  			var cur = self.currentItem.offset();
  			var op = self.helper.offsetParent().offset();
  			if(ui.instance.options.zIndex) ui.helper.css('zIndex', ui.instance.options.zIndex); //Do the zIndex again because it already was resetted by the plugin above on stop
  
  			//Also animate the placeholder if we have one
  			if(ui.instance.placeholder) ui.instance.placeholder.animate({ opacity: 'hide' }, parseInt(ui.options.revert, 10) || 500);
  
  
  			ui.helper.animate({
  				left: cur.left - op.left - self.margins.left,
  				top: cur.top - op.top - self.margins.top
  			}, parseInt(ui.options.revert, 10) || 500, function() {
  				self.currentItem.css('visibility', 'visible');
  				window.setTimeout(function() {
  					if(self.placeholder) self.placeholder.remove();
  					self.helper.remove();
  					if(ui.options._zIndex) ui.helper.css('zIndex', ui.options._zIndex);
  				}, 50);
  			});
  		}
  	});
  
  
  	$.ui.plugin.add("sortable", "containment", {
  		start: function(e, ui) {
  
  			var o = ui.options;
  			if((o.containment.left != undefined || o.containment.constructor == Array) && !o._containment) return;
  			if(!o._containment) o._containment = o.containment;
  
  			if(o._containment == 'parent') o._containment = this[0].parentNode;
  			if(o._containment == 'sortable') o._containment = this[0];
  			if(o._containment == 'document') {
  				o.containment = [
  					0,
  					0,
  					$(document).width(),
  					($(document).height() || document.body.parentNode.scrollHeight)
  				];
  			} else { //I'm a node, so compute top/left/right/bottom
  
  				var ce = $(o._containment);
  				var co = ce.offset();
  
  				o.containment = [
  					co.left,
  					co.top,
  					co.left+(ce.outerWidth() || ce[0].scrollWidth),
  					co.top+(ce.outerHeight() || ce[0].scrollHeight)
  				];
  			}
  
  		},
  		sort: function(e, ui) {
  
  			var o = ui.options;
  			var h = ui.helper;
  			var c = o.containment;
  			var self = ui.instance;
  			var borderLeft = (parseInt(self.offsetParent.css("borderLeftWidth"), 10) || 0);
  			var borderRight = (parseInt(self.offsetParent.css("borderRightWidth"), 10) || 0);
  			var borderTop = (parseInt(self.offsetParent.css("borderTopWidth"), 10) || 0);
  			var borderBottom = (parseInt(self.offsetParent.css("borderBottomWidth"), 10) || 0);
  
  			if(c.constructor == Array) {
  				if((self.position.absolute.left < c[0])) self.position.current.left = c[0] - self.offsets.parent.left - self.margins.left;
  				if((self.position.absolute.top < c[1])) self.position.current.top = c[1] - self.offsets.parent.top - self.margins.top;
  				if(self.position.absolute.left - c[2] + self.helperProportions.width >= 0) self.position.current.left = c[2] - self.offsets.parent.left - self.helperProportions.width - self.margins.left - borderLeft - borderRight;
  				if(self.position.absolute.top - c[3] + self.helperProportions.height >= 0) self.position.current.top = c[3] - self.offsets.parent.top - self.helperProportions.height - self.margins.top - borderTop - borderBottom;
  			} else {
  				if((ui.position.left < c.left)) self.position.current.left = c.left;
  				if((ui.position.top < c.top)) self.position.current.top = c.top;
  				if(ui.position.left - self.offsetParent.innerWidth() + self.helperProportions.width + c.right + borderLeft + borderRight >= 0) self.position.current.left = self.offsetParent.innerWidth() - self.helperProportions.width - c.right - borderLeft - borderRight;
  				if(ui.position.top - self.offsetParent.innerHeight() + self.helperProportions.height + c.bottom + borderTop + borderBottom >= 0) self.position.current.top = self.offsetParent.innerHeight() - self.helperProportions.height - c.bottom - borderTop - borderBottom;
  			}
  
  		}
  	});
  
  	$.ui.plugin.add("sortable", "axis", {
  		sort: function(e, ui) {
  			var o = ui.options;
  			if(o.constraint) o.axis = o.constraint; //Legacy check
  			o.axis == 'x' ? ui.instance.position.top = ui.instance.originalPosition.top : ui.instance.position.left = ui.instance.originalPosition.left;
  		}
  	});
  
  	$.ui.plugin.add("sortable", "scroll", {
  		start: function(e, ui) {
  			var o = ui.options;
  			o.scrollSensitivity	= o.scrollSensitivity || 20;
  			o.scrollSpeed		= o.scrollSpeed || 20;
  
  			ui.instance.overflowY = function(el) {
  				do { if((/auto|scroll/).test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-y'))) return el; el = el.parent(); } while (el[0].parentNode);
  				return $(document);
  			}(this);
  			ui.instance.overflowX = function(el) {
  				do { if((/auto|scroll/).test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-x'))) return el; el = el.parent(); } while (el[0].parentNode);
  				return $(document);
  			}(this);
  
  			if(ui.instance.overflowY[0] != document && ui.instance.overflowY[0].tagName != 'HTML') ui.instance.overflowYstart = ui.instance.overflowY[0].scrollTop;
  			if(ui.instance.overflowX[0] != document && ui.instance.overflowX[0].tagName != 'HTML') ui.instance.overflowXstart = ui.instance.overflowX[0].scrollLeft;
  
  		},
  		sort: function(e, ui) {
  
  			var o = ui.options;
  			var i = ui.instance;
  
  			if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') {
  				if(i.overflowY[0].offsetHeight - (ui.position.top - i.overflowY[0].scrollTop + i.clickOffset.top) < o.scrollSensitivity)
  					i.overflowY[0].scrollTop = i.overflowY[0].scrollTop + o.scrollSpeed;
  				if((ui.position.top - i.overflowY[0].scrollTop + i.clickOffset.top) < o.scrollSensitivity)
  					i.overflowY[0].scrollTop = i.overflowY[0].scrollTop - o.scrollSpeed;
  			} else {
  				//$(document.body).append('<p>'+(e.pageY - $(document).scrollTop())+'</p>');
  				if(e.pageY - $(document).scrollTop() < o.scrollSensitivity)
  					$(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
  				if($(window).height() - (e.pageY - $(document).scrollTop()) < o.scrollSensitivity)
  					$(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
  			}
  
  			if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') {
  				if(i.overflowX[0].offsetWidth - (ui.position.left - i.overflowX[0].scrollLeft + i.clickOffset.left) < o.scrollSensitivity)
  					i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft + o.scrollSpeed;
  				if((ui.position.top - i.overflowX[0].scrollLeft + i.clickOffset.left) < o.scrollSensitivity)
  					i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft - o.scrollSpeed;
  			} else {
  				if(e.pageX - $(document).scrollLeft() < o.scrollSensitivity)
  					$(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
  				if($(window).width() - (e.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
  					$(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
  			}
  
  			//ui.instance.recallOffset(e);
  			i.offset = {
  				left: i.mouse.start.left - i.originalPosition.left + (i.overflowXstart !== undefined ? i.overflowXstart - i.overflowX[0].scrollLeft : 0),
  				top: i.mouse.start.top - i.originalPosition.top + (i.overflowYstart !== undefined ? i.overflowYstart - i.overflowX[0].scrollTop : 0)
  			};
  
  		}
  	});
  
  })(jQuery);
  