diff -r 82ce842da661 -r 645f4de26f99 app/jquery/jquery-ui.sortable.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/jquery/jquery-ui.sortable.js	Tue Jun 23 20:54:03 2009 +0200
@@ -0,0 +1,1015 @@
+/*
+ * jQuery UI Sortable 1.6
+ *
+ * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)
+ * 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($) {
+
+$.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();
+
+	},
+
+	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");
+	},
+
+	_mouseCapture: function(event, overrideHandle) {
+
+		if (this.reverting) {
+			return false;
+		}
+
+		if(this.options.disabled || this.options.type == 'static') return false;
+
+		//We have to refresh the items data once first
+		this._refreshItems(event);
+
+		//Find out if the clicked node (or one of its parents) is a actual item in this.items
+		var currentItem = null, self = this, nodes = $(event.target).parents().each(function() {
+			if($.data(this, 'sortable-item') == self) {
+				currentItem = $(this);
+				return false;
+			}
+		});
+		if($.data(event.target, 'sortable-item') == self) currentItem = $(event.target);
+
+		if(!currentItem) return false;
+		if(this.options.handle && !overrideHandle) {
+			var validHandle = false;
+
+			$(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == event.target) validHandle = true; });
+			if(!validHandle) return false;
+		}
+
+		this.currentItem = currentItem;
+		this._removeCurrentsFromItems();
+		return true;
+
+	},
+
+	_mouseStart: function(event, 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(event);
+
+		//Cache the helper size
+		this._cacheHelperProportions();
+
+		/*
+		 * - Position generation -
+		 * This block generates everything position related - it's the core of draggables.
+		 */
+
+		//Cache the margins of the original element
+		this._cacheMargins();
+
+		//Get the next scrolling parent
+		this.scrollParent = this.helper.scrollParent();
+
+		//The element's absolute position on the page minus margins
+		this.offset = this.currentItem.offset();
+
+		this.offset = {
+			top: this.offset.top - this.margins.top,
+			left: this.offset.left - this.margins.left
+		};
+
+		// Only after we got the offset, we can change the helper's position to absolute
+		// TODO: Still need to figure out a way to make relative sorting possible
+		this.helper.css("position", "absolute");
+		this.cssPosition = this.helper.css("position");
+
+		$.extend(this.offset, {
+			click: { //Where the click happened, relative to the element
+				left: event.pageX - this.offset.left,
+				top: event.pageY - this.offset.top
+			},
+			parent: this._getParentOffset(),
+			relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
+		});
+
+		//Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
+		if(o.cursorAt)
+			this._adjustOffsetFromHelper(o.cursorAt);
+
+		//Generate the original position
+		this.originalPosition = this._generatePosition(event);
+
+		//Cache the former DOM position
+		this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
+
+		//If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way
+		if(this.helper[0] != this.currentItem[0]) {
+			this.currentItem.hide();
+		}
+
+		//Create the placeholder
+		this._createPlaceholder();
+
+		//Set a containment if given in the options
+		if(o.containment)
+			this._setContainment();
+
+		//Call plugins and callbacks
+		this._propagate("start", event);
+
+		//Recache the helper size
+		if(!this._preserveHelperProportions)
+			this._cacheHelperProportions();
+
+
+		//Post 'activate' events to possible containers
+		if(!noActivation) {
+			 for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._propagate("activate", event, this); }
+		}
+
+		//Prepare possible droppables
+		if($.ui.ddmanager)
+			$.ui.ddmanager.current = this;
+
+		if ($.ui.ddmanager && !o.dropBehaviour)
+			$.ui.ddmanager.prepareOffsets(this, event);
+
+		this.dragging = true;
+
+		this.helper.addClass('ui-sortable-helper');
+		this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
+		return true;
+
+	},
+
+	_mouseDrag: function(event) {
+
+		//Compute the helpers position
+		this.position = this._generatePosition(event);
+		this.positionAbs = this._convertPositionTo("absolute");
+
+		if (!this.lastPositionAbs) {
+			this.lastPositionAbs = this.positionAbs;
+		}
+
+		//Call the internal plugins
+		$.ui.plugin.call(this, "sort", [event, this._ui()]);
+
+		//Regenerate the absolute position used for position checks
+		this.positionAbs = this._convertPositionTo("absolute");
+
+		//Set the helper position
+		if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
+		if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
+
+		//Rearrange
+		for (var i = this.items.length - 1; i >= 0; i--) {
+
+			//Cache variables and intersection, continue if no intersection
+			var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
+			if (!intersection) continue;
+
+			if(itemElement != this.currentItem[0] //cannot intersect with itself
+				&&	this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before
+				&&	!$.ui.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked
+				&& (this.options.type == 'semi-dynamic' ? !$.ui.contains(this.element[0], itemElement) : true)
+			) {
+
+				this.direction = intersection == 1 ? "down" : "up";
+
+				if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) {
+					this.options.sortIndicator.call(this, event, item);
+				} else {
+					break;
+				}
+
+				this._propagate("change", event); //Call plugins and callbacks
+				break;
+			}
+		}
+
+		//Post events to containers
+		this._contactContainers(event);
+
+		//Interconnect with droppables
+		if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
+
+		//Call callbacks
+		this._trigger('sort', event, this._ui());
+
+		this.lastPositionAbs = this.positionAbs;
+		return false;
+
+	},
+
+	_mouseStop: function(event, noPropagation) {
+
+		if(!event) return;
+
+		//If we are using droppables, inform the manager about the drop
+		if ($.ui.ddmanager && !this.options.dropBehaviour)
+			$.ui.ddmanager.drop(this, event);
+
+		if(this.options.revert) {
+			var self = this;
+			var cur = self.placeholder.offset();
+
+			self.reverting = true;
+
+			$(this.helper).animate({
+				left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
+				top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
+			}, parseInt(this.options.revert, 10) || 500, function() {
+				self._clear(event);
+			});
+		} else {
+			this._clear(event, noPropagation);
+		}
+
+		return false;
+
+	},
+
+	cancel: function() {
+
+		if(this.dragging) {
+
+			this._mouseUp();
+
+			if(this.options.helper == "original")
+				this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
+			else
+				this.currentItem.show();
+
+			//Post deactivating events to containers
+			for (var i = this.containers.length - 1; i >= 0; i--){
+				this.containers[i]._propagate("deactivate", null, this);
+				if(this.containers[i].containerCache.over) {
+					this.containers[i]._propagate("out", null, this);
+					this.containers[i].containerCache.over = 0;
+				}
+			}
+
+		}
+
+		//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
+		if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
+		if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove();
+
+		$.extend(this, {
+			helper: null,
+			dragging: false,
+			reverting: false,
+			_noFinalSort: null
+		});
+
+		if(this.domPosition.prev) {
+			$(this.domPosition.prev).after(this.currentItem);
+		} else {
+			$(this.domPosition.parent).prepend(this.currentItem);
+		}
+
+		return true;
+
+	},
+
+	serialize: function(o) {
+
+		var items = this._getItemsAsjQuery(o && o.connected);
+		var str = []; o = o || {};
+
+		$(items).each(function() {
+			var res = ($(o.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 = []; o = o || {};
+
+		items.each(function() { ret.push($(o.item || this).attr(o.attribute || '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 != "pointer" && 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
+
+		}
+	},
+
+	_intersectsWithPointer: function(item) {
+
+		var isOverElementHeight = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
+			isOverElementWidth = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
+			isOverElement = isOverElementHeight && isOverElementWidth,
+			verticalDirection = this._getDragVerticalDirection(),
+			horizontalDirection = this._getDragHorizontalDirection();
+
+		if (!isOverElement)
+			return false;
+
+		return this.floating ?
+			( ((horizontalDirection && horizontalDirection == "right") || verticalDirection == "down") ? 2 : 1 )
+			: ( verticalDirection && (verticalDirection == "down" ? 2 : 1) );
+
+	},
+
+	_intersectsWithSides: function(item) {
+
+		var isOverBottomHalf = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
+			isOverRightHalf = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
+			verticalDirection = this._getDragVerticalDirection(),
+			horizontalDirection = this._getDragHorizontalDirection();
+
+		if (this.floating && horizontalDirection) {
+			return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf));
+		} else {
+			return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && !isOverBottomHalf));
+		}
+
+	},
+
+	_getDragVerticalDirection: function() {
+		var delta = this.positionAbs.top - this.lastPositionAbs.top;
+		return delta != 0 && (delta > 0 ? "down" : "up");
+	},
+
+	_getDragHorizontalDirection: function() {
+		var delta = this.positionAbs.left - this.lastPositionAbs.left;
+		return delta != 0 && (delta > 0 ? "right" : "left");
+	},
+
+	refresh: function(event) {
+		this._refreshItems(event);
+		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 $(items);
+
+	},
+
+	_removeCurrentsFromItems: function() {
+
+		var list = this.currentItem.find(":data(sortable-item)");
+
+		for (var i=0; i < this.items.length; i++) {
+
+			for (var j=0; j < list.length; j++) {
+				if(list[j] == this.items[i].item[0])
+					this.items.splice(i,1);
+			};
+
+		};
+
+	},
+
+	_refreshItems: function(event) {
+
+		this.items = [];
+		this.containers = [this];
+		var items = this.items;
+		var self = this;
+		var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { 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[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
+						this.containers.push(inst);
+					}
+				};
+			};
+		}
+
+		for (var i = queries.length - 1; i >= 0; i--) {
+			var targetData = queries[i][1];
+			var _queries = queries[i][0];
+
+			for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) {
+				var item = $(_queries[j]);
+
+				item.data('sortable-item', targetData); // Data for target checking (mouse manager)
+
+				items.push({
+					item: item,
+					instance: targetData,
+					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 && this.helper) {
+			this.offset.parent = this._getParentOffset();
+		}
+
+		for (var i = this.items.length - 1; i >= 0; i--){
+			var item = this.items[i];
+
+			//We ignore calculating positions of all connected containers when we're not over them
+			if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0])
+				continue;
+
+			var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
+
+			if (!fast) {
+				if (this.options.accurateIntersection) {
+					item.width = t.outerWidth();
+					item.height = t.outerHeight();
+				}
+				else {
+					item.width = t[0].offsetWidth;
+					item.height = t[0].offsetHeight;
+				}
+			}
+
+			var p = t.offset();
+			item.left = p.left;
+			item.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();
+			};
+		}
+
+	},
+
+	_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 || self.currentItem[0].className+" ui-sortable-placeholder")
+						.removeClass('ui-sortable-helper')[0];
+
+					if(!className) {
+						el.style.visibility = "hidden";
+						document.body.appendChild(el);
+						// Name attributes are removed, otherwice causes elements to be unchecked
+						// Expando attributes also have to be removed because of stupid IE (no condition, doesn't hurt in other browsers)
+						el.innerHTML = self.currentItem[0].innerHTML.replace(/name\=\"[^\"\']+\"/g, '').replace(/jQuery[0-9]+\=\"[^\"\']+\"/g, '');
+						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)); };
+				}
+			};
+		}
+
+		//Create the placeholder
+		self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem));
+
+		//Append it after the actual current item
+		self.currentItem.after(self.placeholder);
+
+		//Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
+		o.placeholder.update(self, self.placeholder);
+
+	},
+
+	_contactContainers: function(event) {
+		for (var i = this.containers.length - 1; i >= 0; i--){
+
+			if(this._intersectsWith(this.containers[i].containerCache)) {
+				if(!this.containers[i].containerCache.over) {
+
+					if(this.currentContainer != this.containers[i]) {
+
+						//When entering a new container, we will find the item with the least distance and append our item near it
+						var dist = 10000; var itemWithLeastDistance = null; var base = this.positionAbs[this.containers[i].floating ? 'left' : 'top'];
+						for (var j = this.items.length - 1; j >= 0; j--) {
+							if(!$.ui.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, event, itemWithLeastDistance, null, true) : this.options.sortIndicator.call(this, event, null, this.containers[i].element, true);
+						this._propagate("change", event); //Call plugins and callbacks
+						this.containers[i]._propagate("change", event, this); //Call plugins and callbacks
+
+						//Update the placeholder
+						this.options.placeholder.update(this.currentContainer, this.placeholder);
+
+					}
+
+					this.containers[i]._propagate("over", event, this);
+					this.containers[i].containerCache.over = 1;
+				}
+			} else {
+				if(this.containers[i].containerCache.over) {
+					this.containers[i]._propagate("out", event, this);
+					this.containers[i].containerCache.over = 0;
+				}
+			}
+
+		};
+	},
+
+	_createHelper: function(event) {
+
+		var o = this.options;
+		var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem);
+
+		if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already
+			$(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
+
+		if(helper[0] == this.currentItem[0])
+			this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
+
+		if(helper[0].style.width == '' || o.forceHelperSize) helper.width(this.currentItem.width());
+		if(helper[0].style.height == '' || o.forceHelperSize) helper.height(this.currentItem.height());
+
+		return helper;
+
+	},
+
+	_adjustOffsetFromHelper: function(obj) {
+		if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left;
+		if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
+		if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top;
+		if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
+	},
+
+	_getParentOffset: function() {
+
+		//Get the offsetParent and cache its position
+		this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset();
+
+		if((this.offsetParent[0] == document.body && $.browser.mozilla)	//Ugly FF3 fix
+		|| (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
+			po = { top: 0, left: 0 };
+
+		return {
+			top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
+			left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
+		};
+
+	},
+
+	_getRelativeOffset: function() {
+
+		if(this.cssPosition == "relative") {
+			var p = this.currentItem.position();
+			return {
+				top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
+				left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
+			};
+		} else {
+			return { top: 0, left: 0 };
+		}
+
+	},
+
+	_cacheMargins: function() {
+		this.margins = {
+			left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
+			top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
+		};
+	},
+
+	_cacheHelperProportions: function() {
+		this.helperProportions = {
+			width: this.helper.outerWidth(),
+			height: this.helper.outerHeight()
+		};
+	},
+
+	_setContainment: function() {
+
+		var o = this.options;
+		if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
+		if(o.containment == 'document' || o.containment == 'window') this.containment = [
+			0 - this.offset.relative.left - this.offset.parent.left,
+			0 - this.offset.relative.top - this.offset.parent.top,
+			$(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.margins.left - (parseInt(this.currentItem.css("marginRight"),10) || 0),
+			($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.margins.top - (parseInt(this.currentItem.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($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.margins.left,
+				co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.margins.top,
+				co.left + (over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.margins.left,
+				co.top + (over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.margins.top
+			];
+		}
+
+	},
+
+	_convertPositionTo: function(d, pos) {
+
+		if(!pos) pos = this.position;
+		var mod = d == "absolute" ? 1 : -1;
+		var scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
+
+		return {
+			top: (
+				pos.top																	// the calculated relative position
+				+ this.offset.relative.top	* mod										// Only for relative positioned nodes: Relative offset from element to offset parent
+				+ this.offset.parent.top * mod											// The offsetParent's offset without borders (offset + border)
+				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod
+				+ 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.relative.left	* mod										// Only for relative positioned nodes: Relative offset from element to offset parent
+				+ this.offset.parent.left * mod											// The offsetParent's offset without borders (offset + border)
+				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) ) * mod
+				+ this.margins.left * mod												//Add the margin (you don't want the margin counting in intersection methods)
+			)
+		};
+	},
+
+	_generatePosition: function(event) {
+
+		var o = this.options, scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
+
+		var position = {
+			top: (
+				event.pageY																// The absolute mouse position
+				- this.offset.click.top													// Click offset (relative to the element)
+				- this.offset.relative.top												// Only for relative positioned nodes: Relative offset from element to offset parent
+				- this.offset.parent.top												// The offsetParent's offset without borders (offset + border)
+				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) )
+			),
+			left: (
+				event.pageX																// The absolute mouse position
+				- this.offset.click.left												// Click offset (relative to the element)
+				- this.offset.relative.left												// Only for relative positioned nodes: Relative offset from element to offset parent
+				- this.offset.parent.left												// The offsetParent's offset without borders (offset + border)
+				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) )
+			)
+		};
+
+		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.helperProportions.width > this.containment[2]) position.left = this.containment[2] - this.helperProportions.width;
+			if(position.top + this.helperProportions.height > this.containment[3]) position.top = this.containment[3] - this.helperProportions.height;
+		}
+
+		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;
+	},
+
+	_rearrange: function(event, 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);
+
+	},
+
+	_clear: function(event, noPropagation) {
+
+		this.reverting = false;
+
+		//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.helper[0] == this.currentItem[0]) {
+			for(var i in this._storedCSS) {
+				if(this._storedCSS[i] == 'auto' || this._storedCSS[i] == 'static') this._storedCSS[i] = '';
+			}
+			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", event, null, noPropagation); //Trigger update callback if the DOM position has changed
+		if(!$.ui.contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element
+			this._propagate("remove", event, null, noPropagation);
+			for (var i = this.containers.length - 1; i >= 0; i--){
+				if($.ui.contains(this.containers[i].element[0], this.currentItem[0])) {
+					this.containers[i]._propagate("update", event, this, noPropagation);
+					this.containers[i]._propagate("receive", event, this, noPropagation);
+				}
+			};
+		};
+
+		//Post events to containers
+		for (var i = this.containers.length - 1; i >= 0; i--){
+			this.containers[i]._propagate("deactivate", event, this, noPropagation);
+			if(this.containers[i].containerCache.over) {
+				this.containers[i]._propagate("out", event, this);
+				this.containers[i].containerCache.over = 0;
+			}
+		}
+
+		this.dragging = false;
+		if(this.cancelHelperRemoval) {
+			this._propagate("beforeStop", event, null, noPropagation);
+			this._propagate("stop", event, null, noPropagation);
+			return false;
+		}
+
+		this._propagate("beforeStop", event, null, noPropagation);
+
+		//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
+		this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
+
+		if(this.options.helper != "original") this.helper.remove(); this.helper = null;
+		this._propagate("stop", event, null, noPropagation);
+
+		return true;
+
+	},
+
+	_propagate: function(n, event, inst, noPropagation) {
+		$.ui.plugin.call(this, n, [event, this._ui(inst)]);
+		var dontCancel = !noPropagation ? this.element.triggerHandler(n == "sort" ? n : "sort"+n, [event, this._ui(inst)], this.options[n]) : true;
+		if(dontCancel === false) this.cancel();
+	},
+
+	plugins: {},
+
+	_ui: function(inst) {
+		var self = inst || this;
+		return {
+			helper: self.helper,
+			placeholder: self.placeholder || $([]),
+			position: self.position,
+			absolutePosition: self.positionAbs,
+			item: self.currentItem,
+			sender: inst ? inst.element : null
+		};
+	}
+
+}));
+
+$.extend($.ui.sortable, {
+	getter: "serialize toArray",
+	version: "1.6",
+	defaults: {
+		accurateIntersection: true,
+		appendTo: "parent",
+		cancel: ":input",
+		delay: 0,
+		distance: 1,
+		dropOnEmpty: true,
+		forcePlaceholderSize: false,
+		forceHelperSize: false,
+		helper: "original",
+		items: '> *',
+		scope: "default",
+		scroll: true,
+		scrollSensitivity: 20,
+		scrollSpeed: 20,
+		sortIndicator: $.ui.sortable.prototype._rearrange,
+		tolerance: "default",
+		zIndex: 1000
+	}
+});
+
+/*
+ * Sortable Extensions
+ */
+
+$.ui.plugin.add("sortable", "cursor", {
+	start: function(event, ui) {
+		var t = $('body'), i = $(this).data('sortable');
+		if (t.css("cursor")) i.options._cursor = t.css("cursor");
+		t.css("cursor", i.options.cursor);
+	},
+	beforeStop: function(event, ui) {
+		var i = $(this).data('sortable');
+		if (i.options._cursor) $('body').css("cursor", i.options._cursor);
+	}
+});
+
+$.ui.plugin.add("sortable", "opacity", {
+	start: function(event, ui) {
+		var t = ui.helper, i = $(this).data('sortable');
+		if(t.css("opacity")) i.options._opacity = t.css("opacity");
+		t.css('opacity', i.options.opacity);
+	},
+	beforeStop: function(event, ui) {
+		var i = $(this).data('sortable');
+		if(i.options._opacity) $(ui.helper).css('opacity', i.options._opacity);
+	}
+});
+
+$.ui.plugin.add("sortable", "scroll", {
+	start: function(event, ui) {
+		var i = $(this).data("sortable"), o = i.options;
+		if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset();
+	},
+	sort: function(event, ui) {
+
+		var i = $(this).data("sortable"), o = i.options, scrolled = false;
+
+		if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') {
+
+			if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
+				i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
+			else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity)
+				i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
+
+			if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
+				i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
+			else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity)
+				i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
+
+		} else {
+
+			if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
+				scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
+			else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
+				scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
+
+			if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
+				scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
+			else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
+				scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
+
+		}
+
+		if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
+			$.ui.ddmanager.prepareOffsets(i, event);
+
+
+
+		//This is a special case where we need to modify a offset calculated on start, since the following happened:
+		// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
+		// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
+		//    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
+		if(scrolled !== false && i.cssPosition == 'absolute' && i.scrollParent[0] != document && $.ui.contains(i.scrollParent[0], i.offsetParent[0])) {
+			i.offset.parent = i._getParentOffset();
+		}
+		
+		// This is another very weird special case that only happens for relative elements:
+		// 1. If the css position is relative
+		// 2. and the scroll parent is the document or similar to the offset parent
+		// we have to refresh the relative offset during the scroll so there are no jumps
+		if(scrolled !== false && i.cssPosition == 'relative' && !(i.scrollParent[0] != document && i.scrollParent[0] != i.offsetParent[0])) {
+			i.offset.relative = i._getRelativeOffset();
+		}
+
+	}
+});
+
+$.ui.plugin.add("sortable", "zIndex", {
+	start: function(event, ui) {
+		var t = ui.helper, i = $(this).data('sortable');
+		if(t.css("zIndex")) i.options._zIndex = t.css("zIndex");
+		t.css('zIndex', i.options.zIndex);
+	},
+	beforeStop: function(event, ui) {
+		var i = $(this).data('sortable');
+		if(i.options._zIndex) $(ui.helper).css('zIndex', i.options._zIndex == 'auto' ? '' : i.options._zIndex);
+	}
+});
+
+})(jQuery);