text: /*
   * jQuery UI Sortable @VERSION
   *
   * 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.core.js
   */
  (function($) {
  
  function contains(a, b) { 
      var safari2 = $.browser.safari && $.browser.version < 522; 
      if (a.contains && !safari2) { 
          return a.contains(b); 
      } 
      if (a.compareDocumentPosition) 
          return !!(a.compareDocumentPosition(b) & 16); 
      while (b = b.parentNode) 
            if (b == a) return true; 
      return false; 
  };
  
  $.widget("ui.sortable", $.extend({}, $.ui.mouse, {
  	_init: function() {
  
  		var o = this.options;
  		this.containerCache = {};
  		this.element.addClass("ui-sortable");
  	
  		//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
  		this.offset = this.element.offset();
  
  		//Initialize mouse events for interaction
  		this._mouseInit();
  		
  	},
  	plugins: {},
  	ui: function(inst) {
  		return {
  			helper: (inst || this)["helper"],
  			placeholder: (inst || this)["placeholder"] || $([]),
  			position: (inst || this)["position"],
  			absolutePosition: (inst || this)["positionAbs"],
  			options: this.options,
  			element: this.element,
  			item: (inst || this)["currentItem"],
  			sender: inst ? inst.element : null
  		};		
  	},
  	
  	_propagate: function(n,e,inst, noPropagation) {
  		$.ui.plugin.call(this, n, [e, this.ui(inst)]);
  		if(!noPropagation) this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
  	},
  	
  	serialize: function(o) {
  
  		var items = this._getItemsAsjQuery(o && o.connected);
  		var str = []; o = o || {};
  		
  		$(items).each(function() {
  			var res = ($(this.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
  			if(res) str.push((o.key || res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2]));
  		});
  		
  		return str.join('&');
  		
  	},
  	
  	toArray: function(o) {
  		
  		var items = this._getItemsAsjQuery(o && o.connected);
  		var ret = [];
  
  		items.each(function() { ret.push($(this).attr(o.attr || 'id')); });
  		return ret;
  		
  	},
  	
  	/* Be careful with the following core functions */
  	_intersectsWith: function(item) {
  		var x1 = this.positionAbs.left, x2 = x1 + this.helperProportions.width,
  		y1 = this.positionAbs.top, y2 = y1 + this.helperProportions.height;
  		var l = item.left, r = l + item.width, 
  		t = item.top, b = t + item.height;
  		
  		var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
  		var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
  		
  		if(this.options.tolerance == "pointer" || this.options.forcePointerForContainers || (this.options.tolerance == "guess" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])) {
  			return isOverElement;
  		} else {
  		
  			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.positionAbs.left, x2 = x1 + this.helperProportions.width,
  			y1 = this.positionAbs.top, y2 = y1 + this.helperProportions.height;
  		
  		var l = item.left, r = l + item.width, 
  			t = item.top, b = t + item.height;
  		
  		var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
  		var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
  		
  		if(this.options.tolerance == "pointer" || (this.options.tolerance == "guess" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])) {
  			if(!isOverElement) return false;
  
  			if(this.floating) {
  				if ((x1 + dxClick) > l && (x1 + dxClick) < l + item.width/2) return 2;
  				if ((x1 + dxClick) > l + item.width/2 && (x1 + dxClick) < r) return 1;
  			} else {
  				var height = item.height;
  				var direction = y1 - this.updateOriginalPosition.top < 0 ? 2 : 1; // 2 = up
  				
  				if (direction == 1 && (y1 + dyClick) < t + height/2) { return 2; } // up
  				else if (direction == 2 && (y1 + dyClick) > t + height/2) { return 1; } // down
  			}
  
  		} else {
  			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;
  		
  	},
  	
  	refresh: function() {
  		this._refreshItems();
  		this.refreshPositions();
  	},
  	
  	_getItemsAsjQuery: function(connected) {
  		
  		var self = this;
  		var items = [];
  		var queries = [];
  	
  		if(this.options.connectWith && connected) {
  			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 = $.data(cur[j], 'sortable');
  					if(inst && inst != this && !inst.options.disabled) {
  						queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper"), inst]);
  					}
  				};
  			};
  		}
  		
  		queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper"), this]);
  
  		for (var i = queries.length - 1; i >= 0; i--){
  			queries[i][0].each(function() {
  				items.push(this);
  			});
  		};
  		
  		return $(items);
  		
  	},
  	
  	_removeCurrentsFromItems: function() {
  			
  		var list = this.currentItem.find(":data(sortable-item)");	
  	
  		for (var i=0; i < this.items.length; i++) {
  			
  			for (var j=0; j < list.length; j++) {
  				if(list[j] == this.items[i].item[0])
  					this.items.splice(i,1);
  			};
  		
  		};
  		
  	},
  	
  	_refreshItems: function() {
  		
  		this.items = [];
  		this.containers = [this];
  		var items = this.items;
  		var self = this;
  		var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element), this]];
  	
  		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 = $.data(cur[j], 'sortable');
  					if(inst && inst != this && !inst.options.disabled) {
  						queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element), inst]);
  						this.containers.push(inst);
  					}
  				};
  			};
  		}
  
  		for (var i = queries.length - 1; i >= 0; i--){
  			queries[i][0].each(function() {
  				$.data(this, 'sortable-item', queries[i][1]); // Data for target checking (mouse manager)
  				items.push({
  					item: $(this),
  					instance: queries[i][1],
  					width: 0, height: 0,
  					left: 0, top: 0
  				});
  			});
  		};
  
  	},
  	
  	refreshPositions: function(fast) {
  
  		//This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
  		if(this.offsetParent) {
  			var po = this.offsetParent.offset();
  			this.offset.parent = { top: po.top + this.offsetParentBorders.top, left: po.left + this.offsetParentBorders.left };
  		}
  
  		for (var i = this.items.length - 1; i >= 0; i--){		
  			
  			//We ignore calculating positions of all connected containers when we're not over them
  			if(this.items[i].instance != this.currentContainer && this.currentContainer && this.items[i].item[0] != this.currentItem[0])
  				continue;
  				
  			var t = this.options.toleranceElement ? $(this.options.toleranceElement, this.items[i].item) : this.items[i].item;
  			
  			if(!fast) {
  				this.items[i].width = t[0].offsetWidth;
  				this.items[i].height = t[0].offsetHeight;
  			}
  			
  			var p = t.offset();
  			this.items[i].left = p.left;
  			this.items[i].top = p.top;
  			
  		};
  
  		if(this.options.custom && this.options.custom.refreshContainers) {
  			this.options.custom.refreshContainers.call(this);
  		} else {
  			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");
  		this._mouseDestroy();
  		
  		for ( var i = this.items.length - 1; i >= 0; i-- )
  			this.items[i].item.removeData("sortable-item");
  	},
  	
  	_createPlaceholder: function(that) {
  		
  		var self = that || this, o = self.options;
  
  		if(!o.placeholder || o.placeholder.constructor == String) {
  			var className = o.placeholder;
  			o.placeholder = {
  				element: function() {
  					var el = $(document.createElement(self.currentItem[0].nodeName)).addClass(className || "ui-sortable-placeholder")[0];
  
  					if(!className) {
  						el.style.visibility = "hidden";
  						document.body.appendChild(el);
  						el.innerHTML = self.currentItem[0].innerHTML;
  						document.body.removeChild(el);
  					};
  
  					return el;
  				},
  				update: function(container, p) {
  					if(className && !o.forcePlaceholderSize) return;
  					if(!p.height()) { p.height(self.currentItem.innerHeight() - parseInt(self.currentItem.css('paddingTop')||0, 10) - parseInt(self.currentItem.css('paddingBottom')||0, 10)); };
  					if(!p.width()) { p.width(self.currentItem.innerWidth() - parseInt(self.currentItem.css('paddingLeft')||0, 10) - parseInt(self.currentItem.css('paddingRight')||0, 10)); };
  				}
  			};
  		}
  		
  		self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem))
  		self.currentItem.parent()[0].appendChild(self.placeholder[0]);
  		self.placeholder[0].parentNode.insertBefore(self.placeholder[0], self.currentItem[0]);
  		o.placeholder.update(self, self.placeholder);
  	},
  	
  	_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.positionAbs[this.containers[i].floating ? 'left' : 'top'];
  						for (var j = this.items.length - 1; j >= 0; j--) {
  							if(!contains(this.containers[i].element[0], 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];
  							}
  						}
  						
  						if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled
  							continue;
  						
  						this.currentContainer = this.containers[i];
  						itemWithLeastDistance ? this.options.sortIndicator.call(this, e, itemWithLeastDistance, null, true) : this.options.sortIndicator.call(this, e, null, this.containers[i].element, true);
  						this._propagate("change", e); //Call plugins and callbacks
  						this.containers[i]._propagate("change", e, this); //Call plugins and callbacks
  						
  						//Update the placeholder
  						this.options.placeholder.update(this.currentContainer, this.placeholder);
  
  					}
  					
  					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;
  				}
  			}
  			
  		};			
  	},
  	
  	_mouseCapture: function(e, overrideHandle) {
  
  		if(this.options.disabled || this.options.type == 'static') return false;
  
  		//We have to refresh the items data once first
  		this._refreshItems();
  
  		//Find out if the clicked node (or one of its parents) is a actual item in this.items
  		var currentItem = null, self = this, nodes = $(e.target).parents().each(function() {	
  			if($.data(this, 'sortable-item') == self) {
  				currentItem = $(this);
  				return false;
  			}
  		});
  		if($.data(e.target, 'sortable-item') == self) currentItem = $(e.target);
  
  		if(!currentItem) return false;
  		if(this.options.handle && !overrideHandle) {
  			var validHandle = false;
  			
  			$(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == e.target) validHandle = true; });
  			if(!validHandle) return false;
  		}
  			
  		this.currentItem = currentItem;
  		this._removeCurrentsFromItems();
  		return true;	
  			
  	},
  	
  	createHelper: function(e) {
  		
  		var o = this.options;
  		var helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : (o.helper == "original" ? this.currentItem :  this.currentItem.clone());
  		
  		if (!helper.parents('body').length)
  			$(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]); //Add the helper to the DOM if that didn't happen already
  			
  		return helper;
  
  	},
  	
  	_mouseStart: function(e, overrideHandle, noActivation) {
  
  		var o = this.options;
  		this.currentContainer = this;
  
  		//We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
  		this.refreshPositions();
  
  		//Create and append the visible helper	
  		this.helper = this.createHelper(e);		
  
  		/*
  		 * - Position generation -
  		 * This block generates everything position related - it's the core of draggables.
  		 */
  
  		this.margins = {																				//Cache the margins
  			left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
  			top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
  		};		
  	
  		this.offset = this.currentItem.offset();														//The element's absolute position on the page
  		this.offset = {																					//Substract the margins from the element's absolute offset
  			top: this.offset.top - this.margins.top,
  			left: this.offset.left - this.margins.left
  		};
  		
  		this.offset.click = {																			//Where the click happened, relative to the element
  			left: e.pageX - this.offset.left,
  			top: e.pageY - this.offset.top
  		};
  		
  		this.offsetParent = this.helper.offsetParent();													//Get the offsetParent and cache its position
  		var po = this.offsetParent.offset();			
  
  		this.offsetParentBorders = {
  			top: (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
  			left: (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
  		};
  		
  		this.offset.parent = {																			//Store its position plus border
  			top: po.top + this.offsetParentBorders.top,
  			left: po.left + this.offsetParentBorders.left
  		};
  	
  		this.updateOriginalPosition = this.originalPosition = this._generatePosition(e);				//Generate the original position
  		this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };  //Cache the former DOM position
  		
  		//If o.placeholder is used, create a new element at the given position with the class
  		this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Cache the helper size
  
  
  		if(o.helper == "original") {
  			this._storedCSS = { position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left"), clear: this.currentItem.css("clear") };
  		} else {
  			this.currentItem.hide(); //Hide the original, won't cause anything bad this way
  		}
  
  		//Position it absolutely and add a helper class
  		this.helper
  			.css({ position: 'absolute', clear: 'both' })
  			.addClass('ui-sortable-helper');
  		
  		//Create the placeholder	
  		this._createPlaceholder();
  
  		//Call plugins and callbacks
  		this._propagate("start", e);
  		
  		//Recache the helper size
  		if(!this._preserveHelperProportions)
  			this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };
  		
  		if(o.cursorAt) {
  			if(o.cursorAt.left != undefined) this.offset.click.left = o.cursorAt.left;
  			if(o.cursorAt.right != undefined) this.offset.click.left = this.helperProportions.width - o.cursorAt.right;
  			if(o.cursorAt.top != undefined) this.offset.click.top = o.cursorAt.top;
  			if(o.cursorAt.bottom != undefined) this.offset.click.top = this.helperProportions.height - o.cursorAt.bottom;
  		}
  
  		/*
  		 * - Position constraining -
  		 * Here we prepare position constraining like grid and containment.
  		 */	
  		
  		if(o.containment) {
  			if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
  			if(o.containment == 'document' || o.containment == 'window') this.containment = [
  				0 - this.offset.parent.left,
  				0 - this.offset.parent.top,
  				$(o.containment == 'document' ? document : window).width() - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
  				($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
  			];
  
  			if(!(/^(document|window|parent)$/).test(o.containment)) {
  				var ce = $(o.containment)[0];
  				var co = $(o.containment).offset();
  				var over = ($(ce).css("overflow") != 'hidden');
  				
  				this.containment = [
  					co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.parent.left,
  					co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.parent.top,
  					co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.currentItem.css("marginRight"),10) || 0),
  					co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.currentItem.css("marginBottom"),10) || 0)
  				];
  			}
  		}
  		
  		//Post 'activate' events to possible containers
  		if(!noActivation) {
  			 for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._propagate("activate", e, this); }
  		}
  		
  		//Prepare possible droppables
  		if($.ui.ddmanager)
  			$.ui.ddmanager.current = this;
  		
  		if ($.ui.ddmanager && !o.dropBehaviour)
  			$.ui.ddmanager.prepareOffsets(this, e);
  
  		this.dragging = true;
  
  		this._mouseDrag(e); //Execute the drag once - this causes the helper not to be visible before getting its correct position
  		return true;
  
  
  	},
  	
  	_convertPositionTo: function(d, pos) {
  		if(!pos) pos = this.position;
  		var mod = d == "absolute" ? 1 : -1;
  		return {
  			top: (
  				pos.top																	// the calculated relative position
  				+ this.offset.parent.top * mod											// The offsetParent's offset without borders (offset + border)
  				- (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop) * mod	// The offsetParent's scroll position
  				+ this.margins.top * mod												//Add the margin (you don't want the margin counting in intersection methods)
  			),
  			left: (
  				pos.left																// the calculated relative position
  				+ this.offset.parent.left * mod											// The offsetParent's offset without borders (offset + border)
  				- (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft) * mod	// The offsetParent's scroll position
  				+ this.margins.left * mod												//Add the margin (you don't want the margin counting in intersection methods)
  			)
  		};
  	},
  	
  	_generatePosition: function(e) {
  		
  		var o = this.options;
  		var position = {
  			top: (
  				e.pageY																	// The absolute mouse position
  				- this.offset.click.top													// Click offset (relative to the element)
  				- this.offset.parent.top												// The offsetParent's offset without borders (offset + border)
  				+ (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)	// The offsetParent's scroll position, not if the element is fixed
  			),
  			left: (
  				e.pageX																	// The absolute mouse position
  				- this.offset.click.left												// Click offset (relative to the element)
  				- this.offset.parent.left												// The offsetParent's offset without borders (offset + border)
  				+ (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft)	// The offsetParent's scroll position, not if the element is fixed
  			)
  		};
  		
  		if(!this.originalPosition) return position;										//If we are not dragging yet, we won't check for options
  		
  		/*
  		 * - Position constraining -
  		 * Constrain the position to a mix of grid, containment.
  		 */
  		if(this.containment) {
  			if(position.left < this.containment[0]) position.left = this.containment[0];
  			if(position.top < this.containment[1]) position.top = this.containment[1];
  			if(position.left > this.containment[2]) position.left = this.containment[2];
  			if(position.top > this.containment[3]) position.top = this.containment[3];
  		}
  		
  		if(o.grid) {
  			var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1];
  			position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
  			
  			var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0];
  			position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
  		}
  		
  		return position;
  	},
  	
  	_mouseDrag: function(e) {
  
  		//Compute the helpers position
  		this.position = this._generatePosition(e);
  		this.positionAbs = this._convertPositionTo("absolute");
  
  		//Call the internal plugins
  		$.ui.plugin.call(this, "sort", [e, this.ui()]);
  		
  		//Regenerate the absolute position used for position checks
  		this.positionAbs = this._convertPositionTo("absolute");
  		
  		//Set the helper's position
  		this.helper[0].style.left = this.position.left+'px';
  		this.helper[0].style.top = this.position.top+'px';
  
  		//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.placeholder[intersection == 1 ? "next" : "prev"]()[0] != this.items[i].item[0] //no useless actions that have been done before
  				&&	!contains(this.placeholder[0], this.items[i].item[0]) //no action if the item moved is the parent of the item checked
  				&& (this.options.type == 'semi-dynamic' ? !contains(this.element[0], this.items[i].item[0]) : true)
  			) {
  				
  				this.updateOriginalPosition = this._generatePosition(e);
  				
  				this.direction = intersection == 1 ? "down" : "up";
  				this.options.sortIndicator.call(this, 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);
  
  		//Call callbacks
  		this.element.triggerHandler("sort", [e, this.ui()], this.options["sort"]);
  
  		return false;
  		
  	},
  	
  	_rearrange: function(e, i, a, hardRefresh) {
  
  		a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction == 'down' ? i.item[0] : i.item[0].nextSibling));
  		
  		//Various things done here to improve the performance:
  		// 1. we create a setTimeout, that calls refreshPositions
  		// 2. on the instance, we have a counter variable, that get's higher after every append
  		// 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
  		// 4. this lets only the last addition to the timeout stack through
  		this.counter = this.counter ? ++this.counter : 1;
  		var self = this, counter = this.counter;
  
  		window.setTimeout(function() {
  			if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
  		},0);
  
  	},
  	
  	_mouseStop: function(e, noPropagation) {
  
  		//If we are using droppables, inform the manager about the drop
  		if ($.ui.ddmanager && !this.options.dropBehaviour)
  			$.ui.ddmanager.drop(this, e);
  			
  		if(this.options.revert) {
  			var self = this;
  			var cur = self.placeholder.offset();
  
  			$(this.helper).animate({
  				left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
  				top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
  			}, parseInt(this.options.revert, 10) || 500, function() {
  				self._clear(e);
  			});
  		} else {
  			this._clear(e, noPropagation);
  		}
  
  		return false;
  		
  	},
  	
  	_clear: function(e, noPropagation) {
  
  		//We first have to update the dom position of the actual currentItem
  		if(!this._noFinalSort) this.placeholder.before(this.currentItem);
  		this._noFinalSort = null;
  
  		if(this.options.helper == "original")
  			this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
  		else
  			this.currentItem.show();
  
  		if(this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent != this.currentItem.parent()[0]) this._propagate("update", e, null, noPropagation); //Trigger update callback if the DOM position has changed
  		if(!contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element
  			this._propagate("remove", e, null, noPropagation);
  			for (var i = this.containers.length - 1; i >= 0; i--){
  				if(contains(this.containers[i].element[0], this.currentItem[0])) {
  					this.containers[i]._propagate("update", e, this, noPropagation);
  					this.containers[i]._propagate("receive", e, this, noPropagation);
  				}
  			};
  		};
  		
  		//Post events to containers
  		for (var i = this.containers.length - 1; i >= 0; i--){
  			this.containers[i]._propagate("deactivate", e, this, noPropagation);
  			if(this.containers[i].containerCache.over) {
  				this.containers[i]._propagate("out", e, this);
  				this.containers[i].containerCache.over = 0;
  			}
  		}
  		
  		this.dragging = false;
  		if(this.cancelHelperRemoval) {
  			this._propagate("beforeStop", e, null, noPropagation);
  			this._propagate("stop", e, null, noPropagation);
  			return false;
  		}
  		
  		this._propagate("beforeStop", e, null, noPropagation);
  		
  		this.placeholder.remove();
  		if(this.options.helper != "original") this.helper.remove(); this.helper = null;
  		this._propagate("stop", e, null, noPropagation);
  		
  		return true;
  		
  	}
  }));
  
  $.extend($.ui.sortable, {
  	getter: "serialize toArray",
  	defaults: {
  		helper: "original",
  		tolerance: "guess",
  		distance: 1,
  		delay: 0,
  		scroll: true,
  		scrollSensitivity: 20,
  		scrollSpeed: 20,
  		cancel: ":input",
  		items: '> *',
  		zIndex: 1000,
  		dropOnEmpty: true,
  		appendTo: "parent",
  		sortIndicator: $.ui.sortable.prototype._rearrange,
  		scope: "default",
  		forcePlaceholderSize: false
  	}
  });
  
  /*
   * 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);
  	},
  	beforeStop: 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);
  	},
  	beforeStop: 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);
  	},
  	beforeStop: function(e, ui) {
  		if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
  	}
  });
  
  $.ui.plugin.add("sortable", "scroll", {
  	start: function(e, ui) {
  		var o = ui.options;
  		var i = $(this).data("sortable");
  	
  		i.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);
  		}(i.currentItem);
  		i.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);
  		}(i.currentItem);
  		
  		if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') i.overflowYOffset = i.overflowY.offset();
  		if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') i.overflowXOffset = i.overflowX.offset();
  		
  	},
  	sort: function(e, ui) {
  		
  		var o = ui.options;
  		var i = $(this).data("sortable");
  		
  		if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') {
  			if((i.overflowYOffset.top + i.overflowY[0].offsetHeight) - e.pageY < o.scrollSensitivity)
  				i.overflowY[0].scrollTop = i.overflowY[0].scrollTop + o.scrollSpeed;
  			if(e.pageY - i.overflowYOffset.top < o.scrollSensitivity)
  				i.overflowY[0].scrollTop = i.overflowY[0].scrollTop - o.scrollSpeed;
  		} else {
  			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.overflowXOffset.left + i.overflowX[0].offsetWidth) - e.pageX < o.scrollSensitivity)
  				i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft + o.scrollSpeed;
  			if(e.pageX - i.overflowXOffset.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.plugin.add("sortable", "axis", {
  	sort: function(e, ui) {
  		
  		var i = $(this).data("sortable");
  		
  		if(ui.options.axis == "y") i.position.left = i.originalPosition.left;
  		if(ui.options.axis == "x") i.position.top = i.originalPosition.top;
  		
  	}
  });
  
  })(jQuery);
  