text: /*
   * jQuery UI Nested Sortable
   * v 2.0 / 29 oct 2012
   * http://mjsarfatti.com/sandbox/nestedSortable
   *
   * ************************************************
   * PCGC - this has been updated for the PROTOCMSv2
   * PCGC - Add/change any custom vars goto line 767
   * ************************************************
   *
   * Depends on:
   *	 jquery.ui.sortable.js 1.10+
   *
   * Copyright (c) 2010-2013 Manuele J Sarfatti
   * Licensed under the MIT License
   * http://www.opensource.org/licenses/mit-license.php
   */
  (function( factory ) {
  	"use strict";
  
  	var define = window.define;
  
  	if ( typeof define === "function" && define.amd ) {
  
  		// AMD. Register as an anonymous module.
  		define([
  			"jquery",
  			"jquery-ui/sortable"
  		], factory );
  	} else {
  
  		// Browser globals
  		factory( window.jQuery );
  	}
  }(function($) {
  	"use strict";
  
  	function isOverAxis( x, reference, size ) {
  		return ( x > reference ) && ( x < ( reference + size ) );
  	}
  
  	$.widget("mjs.nestedSortable", $.extend({}, $.ui.sortable.prototype, {
  
  		options: {
  			disableParentChange: false,
  			doNotClear: false,
  			expandOnHover: 700,
  			isAllowed: function() { return true; },
  			isTree: false,
  			listType: "ol",
  			maxLevels: 0,
  			protectRoot: false,
  			rootID: null,
  			rtl: false,
  			startCollapsed: false,
  			tabSize: 20,
  
  			branchClass: "mjs-nestedSortable-branch",
  			collapsedClass: "mjs-nestedSortable-collapsed",
  			disableNestingClass: "mjs-nestedSortable-no-nesting",
  			errorClass: "mjs-nestedSortable-error",
  			expandedClass: "mjs-nestedSortable-expanded",
  			hoveringClass: "mjs-nestedSortable-hovering",
  			leafClass: "mjs-nestedSortable-leaf",
  			disabledClass: "mjs-nestedSortable-disabled"
  		},
  
  		_create: function() {
  			var self = this,
  				err;
  
  			this.element.data("ui-sortable", this.element.data("mjs-nestedSortable"));
  
  			// mjs - prevent browser from freezing if the HTML is not correct
  			if (!this.element.is(this.options.listType)) {
  				err = "nestedSortable: " +
  					"Please check that the listType option is set to your actual list type";
  
  				throw new Error(err);
  			}
  
  			// if we have a tree with expanding/collapsing functionality,
  			// force 'intersect' tolerance method
  			if (this.options.isTree && this.options.expandOnHover) {
  				this.options.tolerance = "intersect";
  			}
  
  			$.ui.sortable.prototype._create.apply(this, arguments);
  
  			// prepare the tree by applying the right classes
  			// (the CSS is responsible for actual hide/show functionality)
  			if (this.options.isTree) {
  				$(this.items).each(function() {
  					var $li = this.item,
  						hasCollapsedClass = $li.hasClass(self.options.collapsedClass),
  						hasExpandedClass = $li.hasClass(self.options.expandedClass);
  
  					if ($li.children(self.options.listType).length) {
  						$li.addClass(self.options.branchClass);
  						// expand/collapse class only if they have children
  
  						if ( !hasCollapsedClass && !hasExpandedClass ) {
  							if (self.options.startCollapsed) {
  								$li.addClass(self.options.collapsedClass);
  							} else {
  								$li.addClass(self.options.expandedClass);
  							}
  						}
  					} else {
  						$li.addClass(self.options.leafClass);
  					}
  				});
  			}
  		},
  
  		_destroy: function() {
  			this.element
  				.removeData("mjs-nestedSortable")
  				.removeData("ui-sortable");
  			return $.ui.sortable.prototype._destroy.apply(this, arguments);
  		},
  
  		_mouseDrag: function(event) {
  			var i,
  				item,
  				itemElement,
  				intersection,
  				self = this,
  				o = this.options,
  				scrolled = false,
  				$document = $(document),
  				previousTopOffset,
  				parentItem,
  				level,
  				childLevels,
  				itemAfter,
  				itemBefore,
  				newList,
  				method,
  				a,
  				previousItem,
  				nextItem,
  				helperIsNotSibling;
  
  			//Compute the helpers position
  			this.position = this._generatePosition(event);
  			this.positionAbs = this._convertPositionTo("absolute");
  
  			if (!this.lastPositionAbs) {
  				this.lastPositionAbs = this.positionAbs;
  			}
  
  			//Do scrolling
  			if (this.options.scroll) {
  				if (this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
  
  					if (
  						(
  							this.overflowOffset.top +
  							this.scrollParent[0].offsetHeight
  						) -
  						event.pageY <
  						o.scrollSensitivity
  					) {
  						scrolled = this.scrollParent.scrollTop() + o.scrollSpeed;
  						this.scrollParent.scrollTop(scrolled);
  					} else if (
  						event.pageY -
  						this.overflowOffset.top <
  						o.scrollSensitivity
  					) {
  						scrolled = this.scrollParent.scrollTop() - o.scrollSpeed;
  						this.scrollParent.scrollTop(scrolled);
  					}
  
  					if (
  						(
  							this.overflowOffset.left +
  							this.scrollParent[0].offsetWidth
  						) -
  						event.pageX <
  						o.scrollSensitivity
  					) {
  						scrolled = this.scrollParent.scrollLeft() + o.scrollSpeed;
  						this.scrollParent.scrollLeft(scrolled);
  					} else if (
  						event.pageX -
  						this.overflowOffset.left <
  						o.scrollSensitivity
  					) {
  						scrolled = this.scrollParent.scrollLeft() - o.scrollSpeed;
  						this.scrollParent.scrollLeft(scrolled);
  					}
  
  				} else {
  
  					if (
  						event.pageY -
  						$document.scrollTop() <
  						o.scrollSensitivity
  					) {
  						scrolled = $document.scrollTop() - o.scrollSpeed;
  						$document.scrollTop(scrolled);
  					} else if (
  						$(window).height() -
  						(
  							event.pageY -
  							$document.scrollTop()
  						) <
  						o.scrollSensitivity
  					) {
  						scrolled = $document.scrollTop() + o.scrollSpeed;
  						$document.scrollTop(scrolled);
  					}
  
  					if (
  						event.pageX -
  						$document.scrollLeft() <
  						o.scrollSensitivity
  					) {
  						scrolled = $document.scrollLeft() - o.scrollSpeed;
  						$document.scrollLeft(scrolled);
  					} else if (
  						$(window).width() -
  						(
  							event.pageX -
  							$document.scrollLeft()
  						) <
  						o.scrollSensitivity
  					) {
  						scrolled = $document.scrollLeft() + o.scrollSpeed;
  						$document.scrollLeft(scrolled);
  					}
  
  				}
  
  				if (scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
  					$.ui.ddmanager.prepareOffsets(this, event);
  				}
  			}
  
  			//Regenerate the absolute position used for position checks
  			this.positionAbs = this._convertPositionTo("absolute");
  
  			// mjs - find the top offset before rearrangement,
  			previousTopOffset = this.placeholder.offset().top;
  
  			//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";
  			}
  
  			// mjs - check and reset hovering state at each cycle
  			this.hovering = this.hovering ? this.hovering : null;
  			this.mouseentered = this.mouseentered ? this.mouseentered : false;
  
  			// mjs - let's start caching some variables
  			(function() {
  				var _parentItem = this.placeholder.parent().parent();
  				if (_parentItem && _parentItem.closest(".ui-sortable").length) {
  					parentItem = _parentItem;
  				}
  			}.call(this));
  
  			level = this._getLevel(this.placeholder);
  			childLevels = this._getChildLevels(this.helper);
  			newList = document.createElement(o.listType);
  
  			//Rearrange
  			for (i = this.items.length - 1; i >= 0; i--) {
  
  				//Cache variables and intersection, continue if no intersection
  				item = this.items[i];
  				itemElement = item.item[0];
  				intersection = this._intersectsWithPointer(item);
  				if (!intersection) {
  					continue;
  				}
  
  				// Only put the placeholder inside the current Container, skip all
  				// items form other containers. This works because when moving
  				// an item from one container to another the
  				// currentContainer is switched before the placeholder is moved.
  				//
  				// Without this moving items in "sub-sortables" can cause the placeholder to jitter
  				// beetween the outer and inner container.
  				if (item.instance !== this.currentContainer) {
  					continue;
  				}
  
  				// No action if intersected item is disabled
  				// and the element above or below in the direction we're going is also disabled
  				if (itemElement.className.indexOf(o.disabledClass) !== -1) {
  					// Note: intersection hardcoded direction values from
  					// jquery.ui.sortable.js:_intersectsWithPointer
  					if (intersection === 2) {
  						// Going down
  						itemAfter = this.items[i + 1];
  						if (itemAfter && itemAfter.item.hasClass(o.disabledClass)) {
  							continue;
  						}
  
  					} else if (intersection === 1) {
  						// Going up
  						itemBefore = this.items[i - 1];
  						if (itemBefore && itemBefore.item.hasClass(o.disabledClass)) {
  							continue;
  						}
  					}
  				}
  
  				method = intersection === 1 ? "next" : "prev";
  
  				// cannot intersect with itself
  				// no useless actions that have been done before
  				// no action if the item moved is the parent of the item checked
  				if (itemElement !== this.currentItem[0] &&
  					this.placeholder[method]()[0] !== itemElement &&
  					!$.contains(this.placeholder[0], itemElement) &&
  					(
  						this.options.type === "semi-dynamic" ?
  							!$.contains(this.element[0], itemElement) :
  							true
  					)
  				) {
  
  					// mjs - we are intersecting an element:
  					// trigger the mouseenter event and store this state
  					if (!this.mouseentered) {
  						$(itemElement).mouseenter();
  						this.mouseentered = true;
  					}
  
  					// mjs - if the element has children and they are hidden,
  					// show them after a delay (CSS responsible)
  					if (o.isTree && $(itemElement).hasClass(o.collapsedClass) && o.expandOnHover) {
  						if (!this.hovering) {
  							$(itemElement).addClass(o.hoveringClass);
  							this.hovering = window.setTimeout(function() {
  								$(itemElement)
  									.removeClass(o.collapsedClass)
  									.addClass(o.expandedClass);
  
  								self.refreshPositions();
  								self._trigger("expand", event, self._uiHash());
  							}, o.expandOnHover);
  						}
  					}
  
  					this.direction = intersection === 1 ? "down" : "up";
  
  					// mjs - rearrange the elements and reset timeouts and hovering state
  					if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
  						$(itemElement).mouseleave();
  						this.mouseentered = false;
  						$(itemElement).removeClass(o.hoveringClass);
  						if (this.hovering) {
  							window.clearTimeout(this.hovering);
  						}
  						this.hovering = null;
  
  						// mjs - do not switch container if
  						// it's a root item and 'protectRoot' is true
  						// or if it's not a root item but we are trying to make it root
  						if (o.protectRoot &&
  							!(
  								this.currentItem[0].parentNode === this.element[0] &&
  								// it's a root item
  								itemElement.parentNode !== this.element[0]
  								// it's intersecting a non-root item
  							)
  						) {
  							if (this.currentItem[0].parentNode !== this.element[0] &&
  								itemElement.parentNode === this.element[0]
  							) {
  
  								if ( !$(itemElement).children(o.listType).length) {
  									itemElement.appendChild(newList);
  									if (o.isTree) {
  										$(itemElement)
  											.removeClass(o.leafClass)
  											.addClass(o.branchClass + " " + o.expandedClass);
  									}
  								}
  
  								if (this.direction === "down") {
  									a = $(itemElement).prev().children(o.listType);
  								} else {
  									a = $(itemElement).children(o.listType);
  								}
  
  								if (a[0] !== undefined) {
  									this._rearrange(event, null, a);
  								}
  
  							} else {
  								this._rearrange(event, item);
  							}
  						} else if (!o.protectRoot) {
  							this._rearrange(event, item);
  						}
  					} else {
  						break;
  					}
  
  					// Clear emtpy ul's/ol's
  					this._clearEmpty(itemElement);
  
  					this._trigger("change", event, this._uiHash());
  					break;
  				}
  			}
  
  			// mjs - to find the previous sibling in the list,
  			// keep backtracking until we hit a valid list item.
  			(function() {
  				var _previousItem = this.placeholder.prev();
  				if (_previousItem.length) {
  					previousItem = _previousItem;
  				} else {
  					previousItem = null;
  				}
  			}.call(this));
  
  			if (previousItem != null) {
  				while (
  					previousItem[0].nodeName.toLowerCase() !== "li" ||
  					previousItem[0].className.indexOf(o.disabledClass) !== -1 ||
  					previousItem[0] === this.currentItem[0] ||
  					previousItem[0] === this.helper[0]
  				) {
  					if (previousItem[0].previousSibling) {
  						previousItem = $(previousItem[0].previousSibling);
  					} else {
  						previousItem = null;
  						break;
  					}
  				}
  			}
  
  			// mjs - to find the next sibling in the list,
  			// keep stepping forward until we hit a valid list item.
  			(function() {
  				var _nextItem = this.placeholder.next();
  				if (_nextItem.length) {
  					nextItem = _nextItem;
  				} else {
  					nextItem = null;
  				}
  			}.call(this));
  
  			if (nextItem != null) {
  				while (
  					nextItem[0].nodeName.toLowerCase() !== "li" ||
  					nextItem[0].className.indexOf(o.disabledClass) !== -1 ||
  					nextItem[0] === this.currentItem[0] ||
  					nextItem[0] === this.helper[0]
  				) {
  					if (nextItem[0].nextSibling) {
  						nextItem = $(nextItem[0].nextSibling);
  					} else {
  						nextItem = null;
  						break;
  					}
  				}
  			}
  
  			this.beyondMaxLevels = 0;
  
  			// mjs - if the item is moved to the left, send it one level up
  			// but only if it's at the bottom of the list
  			if (parentItem != null &&
  				nextItem == null &&
  				!(o.protectRoot && parentItem[0].parentNode == this.element[0]) &&
  				(
  					o.rtl &&
  					(
  						this.positionAbs.left +
  						this.helper.outerWidth() > parentItem.offset().left +
  						parentItem.outerWidth()
  					) ||
  					!o.rtl && (this.positionAbs.left < parentItem.offset().left)
  				)
  			) {
  
  				parentItem.after(this.placeholder[0]);
  				helperIsNotSibling = !parentItem
  											.children(o.listItem)
  											.children("li:visible:not(.ui-sortable-helper)")
  											.length;
  				if (o.isTree && helperIsNotSibling) {
  					parentItem
  						.removeClass(this.options.branchClass + " " + this.options.expandedClass)
  						.addClass(this.options.leafClass);
  				}
                  if(typeof parentItem !== 'undefined')
  				    this._clearEmpty(parentItem[0]);
  				this._trigger("change", event, this._uiHash());
  				// mjs - if the item is below a sibling and is moved to the right,
  				// make it a child of that sibling
  			} else if (previousItem != null &&
  				!previousItem.hasClass(o.disableNestingClass) &&
  				(
  					previousItem.children(o.listType).length &&
  					previousItem.children(o.listType).is(":visible") ||
  					!previousItem.children(o.listType).length
  				) &&
  				!(o.protectRoot && this.currentItem[0].parentNode === this.element[0]) &&
  				(
  					o.rtl &&
  					(
  						this.positionAbs.left +
  						this.helper.outerWidth() <
  						previousItem.offset().left +
  						previousItem.outerWidth() -
  						o.tabSize
  					) ||
  					!o.rtl &&
  					(this.positionAbs.left > previousItem.offset().left + o.tabSize)
  				)
  			) {
  
  				this._isAllowed(previousItem, level, level + childLevels + 1);
  
  				if (!previousItem.children(o.listType).length) {
  					previousItem[0].appendChild(newList);
  					if (o.isTree) {
  						previousItem
  							.removeClass(o.leafClass)
  							.addClass(o.branchClass + " " + o.expandedClass);
  					}
  				}
  
  				// mjs - if this item is being moved from the top, add it to the top of the list.
  				if (previousTopOffset && (previousTopOffset <= previousItem.offset().top)) {
  					previousItem.children(o.listType).prepend(this.placeholder);
  				} else {
  					// mjs - otherwise, add it to the bottom of the list.
  					previousItem.children(o.listType)[0].appendChild(this.placeholder[0]);
  				}
                  if(typeof parentItem !== 'undefined')
  				    this._clearEmpty(parentItem[0]);
  				this._trigger("change", event, this._uiHash());
  			} else {
  				this._isAllowed(parentItem, level, level + childLevels);
  			}
  
  			//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._uiHash());
  
  			this.lastPositionAbs = this.positionAbs;
  			return false;
  
  		},
  
  		_mouseStop: function(event) {
  			// mjs - if the item is in a position not allowed, send it back
  			if (this.beyondMaxLevels) {
  
  				this.placeholder.removeClass(this.options.errorClass);
  
  				if (this.domPosition.prev) {
  					$(this.domPosition.prev).after(this.placeholder);
  				} else {
  					$(this.domPosition.parent).prepend(this.placeholder);
  				}
  
  				this._trigger("revert", event, this._uiHash());
  
  			}
  
  			// mjs - clear the hovering timeout, just to be sure
  			$("." + this.options.hoveringClass)
  				.mouseleave()
  				.removeClass(this.options.hoveringClass);
  
  			this.mouseentered = false;
  			if (this.hovering) {
  				window.clearTimeout(this.hovering);
  			}
  			this.hovering = null;
  
  			this._relocate_event = event;
  			this._pid_current = $(this.domPosition.parent).parent().attr("id");
  			this._sort_current = this.domPosition.prev ? $(this.domPosition.prev).next().index() : 0;
  			$.ui.sortable.prototype._mouseStop.apply(this, arguments); //asybnchronous execution, @see _clear for the relocate event.
  		},
  
  		// mjs - this function is slightly modified
  		// to make it easier to hover over a collapsed element and have it expand
  		_intersectsWithSides: function(item) {
  
  			var half = this.options.isTree ? .8 : .5,
  				isOverBottomHalf = isOverAxis(
  					this.positionAbs.top + this.offset.click.top,
  					item.top + (item.height * half),
  					item.height
  				),
  				isOverTopHalf = isOverAxis(
  					this.positionAbs.top + this.offset.click.top,
  					item.top - (item.height * half),
  					item.height
  				),
  				isOverRightHalf = 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" && isOverTopHalf)
  				);
  			}
  
  		},
  
  		_contactContainers: function() {
  
  			if (this.options.protectRoot && this.currentItem[0].parentNode === this.element[0] ) {
  				return;
  			}
  
  			$.ui.sortable.prototype._contactContainers.apply(this, arguments);
  
  		},
  
  		_clear: function() {
  			var i,
  				item;
  
  			$.ui.sortable.prototype._clear.apply(this, arguments);
  
  			//relocate event
  			if (!(this._pid_current === this._uiHash().item.parent().parent().attr("id") &&
  				this._sort_current === this._uiHash().item.index())) {
  				this._trigger("relocate", this._relocate_event, this._uiHash());
  			}
  
  			// mjs - clean last empty ul/ol
  			for (i = this.items.length - 1; i >= 0; i--) {
  				item = this.items[i].item[0];
  				this._clearEmpty(item);
  			}
  
  		},
  
  		serialize: function(options) {
  
  			var o = $.extend({}, this.options, options),
  				items = this._getItemsAsjQuery(o && o.connected),
  				str = [];
  
  			$(items).each(function() {
  				var res = ($(o.item || this).attr(o.attribute || "id") || "")
  						.match(o.expression || (/(.+)[-=_](.+)/)),
  					pid = ($(o.item || this).parent(o.listType)
  						.parent(o.items)
  						.attr(o.attribute || "id") || "")
  						.match(o.expression || (/(.+)[-=_](.+)/));
  
  				if (res) {
  					str.push(
  						(
  							(o.key || res[1]) +
  							"[" +
  							(o.key && o.expression ? res[1] : res[2]) + "]"
  						) +
  						"=" +
  						(pid ? (o.key && o.expression ? pid[1] : pid[2]) : o.rootID));
  				}
  			});
  
  			if (!str.length && o.key) {
  				str.push(o.key + "=");
  			}
  
  			return str.join("&");
  
  		},
  
  		toHierarchy: function(options) {
  
  			var o = $.extend({}, this.options, options),
  				ret = [];
  
  			$(this.element).children(o.items).each(function() {
  				var level = _recursiveItems(this);
  				ret.push(level);
  			});
  
  			return ret;
  
  			function _recursiveItems(item) {
  				var id = ($(item).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[-=_](.+)/)),
  					currentItem;
  
  				var data = $(item).data();
  				if (data.nestedSortableItem) {
  					delete data.nestedSortableItem; // Remove the nestedSortableItem object from the data
  				}
  
  				if (id) {
  					currentItem = {
  						"id": id[2]
  					};
  
  					currentItem = $.extend({}, currentItem, data); // Combine the two objects
  
  					if ($(item).children(o.listType).children(o.items).length > 0) {
  						currentItem.children = [];
  						$(item).children(o.listType).children(o.items).each(function() {
  							var level = _recursiveItems(this);
  							currentItem.children.push(level);
  						});
  					}
  					return currentItem;
  				}
  			}
  		},
  
  		toArray: function(options) {
  
  			var o = $.extend({}, this.options, options),
  				sDepth = o.startDepthCount || 0,
  				ret = [],
  				left = 1;
  
  			if (!o.excludeRoot) {
  				ret.push({
  					"item_id": o.rootID,
  					"parent_id": null,
  					"depth": sDepth,
  					"left": left,
  					"right": ($(o.items, this.element).length + 1) * 2
  				});
  				left++;
  			}
  
  			$(this.element).children(o.items).each(function() {
  				left = _recursiveArray(this, sDepth + 1, left);
  			});
  
  			ret = ret.sort(function(a, b) { return (a.left - b.left); });
  
  			return ret;
  
  			function _recursiveArray(item, depth, _left) {
  
  				var pageId = $(item).attr('data-pageId');
  				var navtitle = $(item).find('input.form-navtitle').val();
  				var slug = $(item).find('input.form-slug').val();
  
  				var right = _left + 1,
  					id,
  					pid,
  					parentItem;
  
  				if ($(item).children(o.listType).children(o.items).length > 0) {
  					depth++;
  					$(item).children(o.listType).children(o.items).each(function() {
  						right = _recursiveArray($(this), depth, right);
  					});
  					depth--;
  				}
  
  				id = ($(item).attr(o.attribute || "id")).match(o.expression || (/(.+)[-=_](.+)/));
  
  				if (depth === sDepth + 1) {
  					pid = o.rootID;
  				} else {
  					parentItem = ($(item).parent(o.listType)
  											.parent(o.items)
  											.attr(o.attribute || "id"))
  											.match(o.expression || (/(.+)[-=_](.+)/));
  					pid = parentItem[2];
  					//console.log(pid);
  				}
  
  				if (id) {
  						ret.push({
  							"pageId": pageId,
  							"navtitle": navtitle,
  							"slug": slug,
  							"menu_item_id": id[2],
  							"menu_parent_id": pid,
  							"depth": depth,
  							"left": _left,
  							"right": right
  						});
  				}
  
  				_left = right + 1;
  				return _left;
  			}
  
  		},
  
  		_clearEmpty: function (item) {
  			function replaceClass(elem, search, replace, swap) {
  				if (swap) {
  					search = [replace, replace = search][0];
  				}
  
  				$(elem).removeClass(search).addClass(replace);
  			}
  
  			var o = this.options,
  				childrenList = $(item).children(o.listType),
  				hasChildren = childrenList.is(':not(:empty)');
  
  			var doNotClear =
  				o.doNotClear ||
  				hasChildren ||
  				o.protectRoot && $(item)[0] === this.element[0];
  
  			if (o.isTree) {
  				replaceClass(item, o.branchClass, o.leafClass, doNotClear);
  
  				if (doNotClear && hasChildren) {
  					replaceClass(item, o.collapsedClass, o.expandedClass);
  				}
  			}
  
  			if (!doNotClear) {
  				childrenList.remove();
  			}
  		},
  
  		_getLevel: function(item) {
  
  			var level = 1,
  				list;
  
  			if (this.options.listType) {
  				list = item.closest(this.options.listType);
  				while (list && list.length > 0 && !list.is(".ui-sortable")) {
  					level++;
  					list = list.parent().closest(this.options.listType);
  				}
  			}
  
  			return level;
  		},
  
  		_getChildLevels: function(parent, depth) {
  			var self = this,
  				o = this.options,
  				result = 0;
  			depth = depth || 0;
  
  			$(parent).children(o.listType).children(o.items).each(function(index, child) {
  				result = Math.max(self._getChildLevels(child, depth + 1), result);
  			});
  
  			return depth ? result + 1 : result;
  		},
  
  		_isAllowed: function(parentItem, level, levels) {
  			var o = this.options,
  				// this takes into account the maxLevels set to the recipient list
  				maxLevels = this
  					.placeholder
  					.closest(".ui-sortable")
  					.nestedSortable("option", "maxLevels"),
  
  				// Check if the parent has changed to prevent it, when o.disableParentChange is true
  				oldParent = this.currentItem.parent().parent(),
  				disabledByParentchange = o.disableParentChange && (
  					//From somewhere to somewhere else, except the root
  					typeof parentItem !== 'undefined' && !oldParent.is(parentItem) ||
  					typeof parentItem === 'undefined' && oldParent.is("li")	//From somewhere to the root
  				);
  			// mjs - is the root protected?
  			// mjs - are we nesting too deep?
  			if (
  				disabledByParentchange ||
  				!o.isAllowed(this.placeholder, parentItem, this.currentItem)
  			) {
  				this.placeholder.addClass(o.errorClass);
  				if (maxLevels < levels && maxLevels !== 0) {
  					this.beyondMaxLevels = levels - maxLevels;
  				} else {
  					this.beyondMaxLevels = 1;
  				}
  			} else {
  				if (maxLevels < levels && maxLevels !== 0) {
  					this.placeholder.addClass(o.errorClass);
  					this.beyondMaxLevels = levels - maxLevels;
  				} else {
  					this.placeholder.removeClass(o.errorClass);
  					this.beyondMaxLevels = 0;
  				}
  			}
  		}
  
  	}));
  
  	$.mjs.nestedSortable.prototype.options = $.extend(
  		{},
  		$.ui.sortable.prototype.options,
  		$.mjs.nestedSortable.prototype.options
  	);
  }));
  