/*
 * jQuery UI 1.5.3
 *
 * Copyright (c) 2008 Paul Bakaus (ui.jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;(function($) {

$.ui = {
	plugin: {
		add: function(module, option, set) {
			var proto = $.ui[module].prototype;
			for(var i in set) {
				proto.plugins[i] = proto.plugins[i] || [];
				proto.plugins[i].push([option, set[i]]);
			}
		},
		call: function(instance, name, args) {
			var set = instance.plugins[name];
			if(!set) { return; }
			
			for (var i = 0; i < set.length; i++) {
				if (instance.options[set[i][0]]) {
					set[i][1].apply(instance.element, args);
				}
			}
		}	
	},
	cssCache: {},
	css: function(name) {
		if ($.ui.cssCache[name]) { return $.ui.cssCache[name]; }
		var tmp = $('<div class="ui-gen">').addClass(name).css({position:'absolute', top:'-5000px', left:'-5000px', display:'block'}).appendTo('body');
		
		//if (!$.browser.safari)
			//tmp.appendTo('body'); 
		
		//Opera and Safari set width and height to 0px instead of auto
		//Safari returns rgba(0,0,0,0) when bgcolor is not set
		$.ui.cssCache[name] = !!(
			(!(/auto|default/).test(tmp.css('cursor')) || (/^[1-9]/).test(tmp.css('height')) || (/^[1-9]/).test(tmp.css('width')) || 
			!(/none/).test(tmp.css('backgroundImage')) || !(/transparent|rgba\(0, 0, 0, 0\)/).test(tmp.css('backgroundColor')))
		);
		try { $('body').get(0).removeChild(tmp.get(0));	} catch(e){}
		return $.ui.cssCache[name];
	},
	disableSelection: function(el) {
		$(el).attr('unselectable', 'on').css('MozUserSelect', 'none');
	},
	enableSelection: function(el) {
		$(el).attr('unselectable', 'off').css('MozUserSelect', '');
	},
	hasScroll: function(e, a) {
		var scroll = /top/.test(a||"top") ? 'scrollTop' : 'scrollLeft', has = false;
		if (e[scroll] > 0) return true; e[scroll] = 1;
		has = e[scroll] > 0 ? true : false; e[scroll] = 0;
		return has;
	}
};


/** jQuery core modifications and additions **/

var _remove = $.fn.remove;
$.fn.remove = function() {
	$("*", this).add(this).triggerHandler("remove");
	return _remove.apply(this, arguments );
};

// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
// created by Scott González and Jörn Zaefferer
function getter(namespace, plugin, method) {
	var methods = $[namespace][plugin].getter || [];
	methods = (typeof methods == "string" ? methods.split(/,?\s+/) : methods);
	return ($.inArray(method, methods) != -1);
}

$.widget = function(name, prototype) {
	var namespace = name.split(".")[0];
	name = name.split(".")[1];
	
	// create plugin method
	$.fn[name] = function(options) {
		var isMethodCall = (typeof options == 'string'),
			args = Array.prototype.slice.call(arguments, 1);
		
		if (isMethodCall && getter(namespace, name, options)) {
			var instance = $.data(this[0], name);
			return (instance ? instance[options].apply(instance, args)
				: undefined);
		}
		
		return this.each(function() {
			var instance = $.data(this, name);
			if (isMethodCall && instance && $.isFunction(instance[options])) {
				instance[options].apply(instance, args);
			} else if (!isMethodCall) {
				$.data(this, name, new $[namespace][name](this, options));
			}
		});
	};
	
	// create widget constructor
	$[namespace][name] = function(element, options) {
		var self = this;
		
		this.widgetName = name;
		this.widgetBaseClass = namespace + '-' + name;
		
		this.options = $.extend({}, $.widget.defaults, $[namespace][name].defaults, options);
		this.element = $(element)
			.bind('setData.' + name, function(e, key, value) {
				return self.setData(key, value);
			})
			.bind('getData.' + name, function(e, key) {
				return self.getData(key);
			})
			.bind('remove', function() {
				return self.destroy();
			});
		this.init();
	};
	
	// add widget prototype
	$[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);
};

$.widget.prototype = {
	init: function() {},
	destroy: function() {
		this.element.removeData(this.widgetName);
	},
	
	getData: function(key) {
		return this.options[key];
	},
	setData: function(key, value) {
		this.options[key] = value;
		
		if (key == 'disabled') {
			this.element[value ? 'addClass' : 'removeClass'](
				this.widgetBaseClass + '-disabled');
		}
	},
	
	enable: function() {
		this.setData('disabled', false);
	},
	disable: function() {
		this.setData('disabled', true);
	}
};

$.widget.defaults = {
	disabled: false
};


/** Mouse Interaction Plugin **/

$.ui.mouse = {
	mouseInit: function() {
		var self = this;
	
		this.element.bind('mousedown.'+this.widgetName, function(e) {
			return self.mouseDown(e);
		});
		
		// Prevent text selection in IE
		if ($.browser.msie) {
			this._mouseUnselectable = this.element.attr('unselectable');
			this.element.attr('unselectable', 'on');
		}
		
		this.started = false;
	},
	
	// TODO: make sure destroying one instance of mouse doesn't mess with
	// other instances of mouse
	mouseDestroy: function() {
		this.element.unbind('.'+this.widgetName);
		
		// Restore text selection in IE
		($.browser.msie
			&& this.element.attr('unselectable', this._mouseUnselectable));
	},
	
	mouseDown: function(e) {
		// we may have missed mouseup (out of window)
		(this._mouseStarted && this.mouseUp(e));
		
		this._mouseDownEvent = e;
		
		var self = this,
			btnIsLeft = (e.which == 1),
			elIsCancel = (typeof this.options.cancel == "string" ? $(e.target).parents().add(e.target).filter(this.options.cancel).length : false);
		if (!btnIsLeft || elIsCancel || !this.mouseCapture(e)) {
			return true;
		}
		
		this._mouseDelayMet = !this.options.delay;
		if (!this._mouseDelayMet) {
			this._mouseDelayTimer = setTimeout(function() {
				self._mouseDelayMet = true;
			}, this.options.delay);
		}
		
		if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
			this._mouseStarted = (this.mouseStart(e) !== false);
			if (!this._mouseStarted) {
				e.preventDefault();
				return true;
			}
		}
		
		// these delegates are required to keep context
		this._mouseMoveDelegate = function(e) {
			return self.mouseMove(e);
		};
		this._mouseUpDelegate = function(e) {
			return self.mouseUp(e);
		};
		$(document)
			.bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
			.bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
		
		return false;
	},
	
	mouseMove: function(e) {
		// IE mouseup check - mouseup happened when mouse was out of window
		if ($.browser.msie && !e.button) {
			return this.mouseUp(e);
		}
		
		if (this._mouseStarted) {
			this.mouseDrag(e);
			return false;
		}
		
		if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
			this._mouseStarted =
				(this.mouseStart(this._mouseDownEvent, e) !== false);
			(this._mouseStarted ? this.mouseDrag(e) : this.mouseUp(e));
		}
		
		return !this._mouseStarted;
	},
	
	mouseUp: function(e) {
		$(document)
			.unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
			.unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
		
		if (this._mouseStarted) {
			this._mouseStarted = false;
			this.mouseStop(e);
		}
		
		return false;
	},
	
	mouseDistanceMet: function(e) {
		return (Math.max(
				Math.abs(this._mouseDownEvent.pageX - e.pageX),
				Math.abs(this._mouseDownEvent.pageY - e.pageY)
			) >= this.options.distance
		);
	},
	
	mouseDelayMet: function(e) {
		return this._mouseDelayMet;
	},
	
	// These are placeholder methods, to be overriden by extending plugin
	mouseStart: function(e) {},
	mouseDrag: function(e) {},
	mouseStop: function(e) {},
	mouseCapture: function(e) { return true; }
};

$.ui.mouse.defaults = {
	cancel: null,
	distance: 1,
	delay: 0
};

})(jQuery);
/*
 * jQuery UI Draggable
 *
 * Copyright (c) 2008 Paul Bakaus
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * http://docs.jquery.com/UI/Draggables
 *
 * Depends:
 *	ui.core.js
 */
(function($) {

$.widget("ui.draggable", $.extend({}, $.ui.mouse, {
	init: function() {
		
		//Initialize needed constants
		var o = this.options;

		//Position the node
		if (o.helper == 'original' && !(/(relative|absolute|fixed)/).test(this.element.css('position')))
			this.element.css('position', 'relative');

		this.element.addClass('ui-draggable');
		(o.disabled && this.element.addClass('ui-draggable-disabled'));
		
		this.mouseInit();
		
	},
	mouseStart: function(e) {
		var o = this.options;
		
		if (this.helper || o.disabled || $(e.target).is('.ui-resizable-handle')) return false;
		
		var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
		
	
		$(this.options.handle, this.element).find("*").andSelf().each(function() {
			if(this == e.target) handle = true;
		});
		if (!handle) return false;
		
		if($.ui.ddmanager) $.ui.ddmanager.current = this;
		
		//Create and append the visible helper
		this.helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [e])) : (o.helper == 'clone' ? this.element.clone() : this.element);
		if(!this.helper.parents('body').length) this.helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
		if(this.helper[0] != this.element[0] && !(/(fixed|absolute)/).test(this.helper.css("position"))) this.helper.css("position", "absolute");
		
		/*
		 * - Position generation -
		 * This block generates everything position related - it's the core of draggables.
		 */
		
		this.margins = {																				//Cache the margins
			left: (parseInt(this.element.css("marginLeft"),10) || 0),
			top: (parseInt(this.element.css("marginTop"),10) || 0)
		};		
		
		this.cssPosition = this.helper.css("position");													//Store the helper's css position
		this.offset = this.element.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(); var po = this.offsetParent.offset();			//Get the offsetParent and cache its position
		if(this.offsetParent[0] == document.body && $.browser.mozilla) po = { top: 0, left: 0 };		//Ugly FF3 fix
		this.offset.parent = {																			//Store its position plus border
			top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
			left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
		};
		
		var p = this.element.position();																//This is a relative to absolute position minus the actual position calculation - only used for relative positioned helpers
		this.offset.relative = this.cssPosition == "relative" ? {
			top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.offsetParent[0].scrollTop,
			left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.offsetParent[0].scrollLeft
		} : { top: 0, left: 0 };
		
		this.originalPosition = this.generatePosition(e);												//Generate the original position
		this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Cache the helper size
		
		if(o.cursorAt) {
			if(o.cursorAt.left != undefined) this.offset.click.left = o.cursorAt.left + this.margins.left;
			if(o.cursorAt.right != undefined) this.offset.click.left = this.helperProportions.width - o.cursorAt.right + this.margins.left;
			if(o.cursorAt.top != undefined) this.offset.click.top = o.cursorAt.top + this.margins.top;
			if(o.cursorAt.bottom != undefined) this.offset.click.top = this.helperProportions.height - o.cursorAt.bottom + this.margins.top;
		}
		
		
		/*
		 * - 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.relative.left - this.offset.parent.left,
				0 - this.offset.relative.top - this.offset.parent.top,
				$(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
				($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - 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();
				
				this.containment = [
					co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left,
					co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top,
					co.left+Math.max(ce.scrollWidth,ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
					co.top+Math.max(ce.scrollHeight,ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
				];
			}
		}
		
		//Call plugins and callbacks
		this.propagate("start", e);
		
		this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Recache the helper size
		if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
		
		this.helper.addClass("ui-draggable-dragging");
		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.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.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollTop) * mod	// The offsetParent's scroll position, not if the element is fixed
				+ (this.cssPosition == "fixed" ? $(document).scrollTop() : 0) * 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.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollLeft) * mod	// The offsetParent's scroll position, not if the element is fixed
				+ (this.cssPosition == "fixed" ? $(document).scrollLeft() : 0) * mod
				+ 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.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.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollTop)	// The offsetParent's scroll position, not if the element is fixed
				- (this.cssPosition == "fixed" ? $(document).scrollTop() : 0)
			),
			left: (
				e.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.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollLeft)	// The offsetParent's scroll position, not if the element is fixed
				- (this.cssPosition == "fixed" ? $(document).scrollLeft() : 0)
			)
		};
		
		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 plugins and callbacks and use the resulting position if something is returned		
		this.position = this.propagate("drag", e) || this.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';
		if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
		
		return false;
	},
	mouseStop: function(e) {
		
		//If we are using droppables, inform the manager about the drop
		var dropped = false;
		if ($.ui.ddmanager && !this.options.dropBehaviour)
			var dropped = $.ui.ddmanager.drop(this, e);		
		
		if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true) {
			var self = this;
			$(this.helper).animate(this.originalPosition, parseInt(this.options.revert, 10) || 500, function() {
				self.propagate("stop", e);
				self.clear();
			});
		} else {
			this.propagate("stop", e);
			this.clear();
		}
		
		return false;
	},
	clear: function() {
		this.helper.removeClass("ui-draggable-dragging");
		if(this.options.helper != 'original' && !this.cancelHelperRemoval) this.helper.remove();
		//if($.ui.ddmanager) $.ui.ddmanager.current = null;
		this.helper = null;
		this.cancelHelperRemoval = false;
	},
	
	// From now on bulk stuff - mainly helpers
	plugins: {},
	uiHash: function(e) {
		return {
			helper: this.helper,
			position: this.position,
			absolutePosition: this.positionAbs,
			options: this.options			
		};
	},
	propagate: function(n,e) {
		$.ui.plugin.call(this, n, [e, this.uiHash()]);
		if(n == "drag") this.positionAbs = this.convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins
		return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [e, this.uiHash()], this.options[n]);
	},
	destroy: function() {
		if(!this.element.data('draggable')) return;
		this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable');
		this.mouseDestroy();
	}
}));

$.extend($.ui.draggable, {
	defaults: {
		appendTo: "parent",
		axis: false,
		cancel: ":input",
		delay: 0,
		distance: 1,
		helper: "original"
	}
});

$.ui.plugin.add("draggable", "cursor", {
	start: function(e, ui) {
		var t = $('body');
		if (t.css("cursor")) ui.options._cursor = t.css("cursor");
		t.css("cursor", ui.options.cursor);
	},
	stop: function(e, ui) {
		if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);
	}
});

$.ui.plugin.add("draggable", "zIndex", {
	start: function(e, ui) {
		var t = $(ui.helper);
		if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex");
		t.css('zIndex', ui.options.zIndex);
	},
	stop: function(e, ui) {
		if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex);
	}
});

$.ui.plugin.add("draggable", "opacity", {
	start: function(e, ui) {
		var t = $(ui.helper);
		if(t.css("opacity")) ui.options._opacity = t.css("opacity");
		t.css('opacity', ui.options.opacity);
	},
	stop: function(e, ui) {
		if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
	}
});

$.ui.plugin.add("draggable", "iframeFix", {
	start: function(e, ui) {
		$(ui.options.iframeFix === true ? "iframe" : ui.options.iframeFix).each(function() {					
			$('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
			.css({
				width: this.offsetWidth+"px", height: this.offsetHeight+"px",
				position: "absolute", opacity: "0.001", zIndex: 1000
			})
			.css($(this).offset())
			.appendTo("body");
		});
	},
	stop: function(e, ui) {
		$("div.DragDropIframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers	
	}
});

$.ui.plugin.add("draggable", "scroll", {
	start: function(e, ui) {
		var o = ui.options;
		var i = $(this).data("draggable");
		o.scrollSensitivity	= o.scrollSensitivity || 20;
		o.scrollSpeed		= o.scrollSpeed || 20;
		
		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);
		}(this);
		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);
		}(this);
		
		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();
		
	},
	drag: function(e, ui) {
		
		var o = ui.options;
		var i = $(this).data("draggable");
		
		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("draggable", "snap", {
	start: function(e, ui) {
		
		var inst = $(this).data("draggable");
		inst.snapElements = [];
		$(ui.options.snap === true ? '.ui-draggable' : ui.options.snap).each(function() {
			var $t = $(this); var $o = $t.offset();
			if(this != inst.element[0]) inst.snapElements.push({
				item: this,
				width: $t.outerWidth(), height: $t.outerHeight(),
				top: $o.top, left: $o.left
			});
		});
		
	},
	drag: function(e, ui) {
		
		var inst = $(this).data("draggable");
		var d = ui.options.snapTolerance || 20;
		var x1 = ui.absolutePosition.left, x2 = x1 + inst.helperProportions.width,
			y1 = ui.absolutePosition.top, y2 = y1 + inst.helperProportions.height;
		
		for (var i = inst.snapElements.length - 1; i >= 0; i--){
			
			var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width, 
				t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
			
			//Yes, I know, this is insane ;)
			if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) continue;
			
			if(ui.options.snapMode != 'inner') {
				var ts = Math.abs(t - y2) <= 20;
				var bs = Math.abs(b - y1) <= 20;
				var ls = Math.abs(l - x2) <= 20;
				var rs = Math.abs(r - x1) <= 20;
				if(ts) ui.position.top = inst.convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top;
				if(bs) ui.position.top = inst.convertPositionTo("relative", { top: b, left: 0 }).top;
				if(ls) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left;
				if(rs) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: r }).left;
			}
			
			if(ui.options.snapMode != 'outer') {
				var ts = Math.abs(t - y1) <= 20;
				var bs = Math.abs(b - y2) <= 20;
				var ls = Math.abs(l - x1) <= 20;
				var rs = Math.abs(r - x2) <= 20;
				if(ts) ui.position.top = inst.convertPositionTo("relative", { top: t, left: 0 }).top;
				if(bs) ui.position.top = inst.convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top;
				if(ls) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: l }).left;
				if(rs) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left;
			}
			
		};
	}
});

$.ui.plugin.add("draggable", "connectToSortable", {
	start: function(e,ui) {
	
		var inst = $(this).data("draggable");
		inst.sortables = [];
		$(ui.options.connectToSortable).each(function() {
			if($.data(this, 'sortable')) {
				var sortable = $.data(this, 'sortable');
				inst.sortables.push({
					instance: sortable,
					shouldRevert: sortable.options.revert
				});
				sortable.refreshItems();	//Do a one-time refresh at start to refresh the containerCache	
				sortable.propagate("activate", e, inst);
			}
		});

	},
	stop: function(e,ui) {
		
		//If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
		var inst = $(this).data("draggable");
		
		$.each(inst.sortables, function() {
			if(this.instance.isOver) {
				this.instance.isOver = 0;
				inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
				this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
				if(this.shouldRevert) this.instance.options.revert = true; //revert here
				this.instance.mouseStop(e);
				
				//Also propagate receive event, since the sortable is actually receiving a element
				this.instance.element.triggerHandler("sortreceive", [e, $.extend(this.instance.ui(), { sender: inst.element })], this.instance.options["receive"]);

				this.instance.options.helper = this.instance.options._helper;
			} else {
				this.instance.propagate("deactivate", e, inst);
			}

		});
		
	},
	drag: function(e,ui) {

		var inst = $(this).data("draggable"), self = this;
		
		var checkPos = function(o) {
				
			var l = o.left, r = l + o.width,
				t = o.top, b = t + o.height;

			return (l < (this.positionAbs.left + this.offset.click.left) && (this.positionAbs.left + this.offset.click.left) < r
					&& t < (this.positionAbs.top + this.offset.click.top) && (this.positionAbs.top + this.offset.click.top) < b);				
		};
		
		$.each(inst.sortables, function(i) {

			if(checkPos.call(inst, this.instance.containerCache)) {

				//If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
				if(!this.instance.isOver) {
					this.instance.isOver = 1;

					//Now we fake the start of dragging for the sortable instance,
					//by cloning the list group item, appending it to the sortable and using it as inst.currentItem
					//We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)
					this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
					this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
					this.instance.options.helper = function() { return ui.helper[0]; };
				
					e.target = this.instance.currentItem[0];
					this.instance.mouseCapture(e, true);
					this.instance.mouseStart(e, true, true);

					//Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
					this.instance.offset.click.top = inst.offset.click.top;
					this.instance.offset.click.left = inst.offset.click.left;
					this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
					this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;
					
					inst.propagate("toSortable", e);
				
				}
				
				//Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable
				if(this.instance.currentItem) this.instance.mouseDrag(e);
				
			} else {
				
				//If it doesn't intersect with the sortable, and it intersected before,
				//we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
				if(this.instance.isOver) {
					this.instance.isOver = 0;
					this.instance.cancelHelperRemoval = true;
					this.instance.options.revert = false; //No revert here
					this.instance.mouseStop(e, true);
					this.instance.options.helper = this.instance.options._helper;
					
					//Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
					this.instance.currentItem.remove();
					if(this.instance.placeholder) this.instance.placeholder.remove();
					
					inst.propagate("fromSortable", e);
				}
				
			};

		});

	}
});

$.ui.plugin.add("draggable", "stack", {
	start: function(e,ui) {
		var group = $.makeArray($(ui.options.stack.group)).sort(function(a,b) {
			return (parseInt($(a).css("zIndex"),10) || ui.options.stack.min) - (parseInt($(b).css("zIndex"),10) || ui.options.stack.min);
		});
		
		$(group).each(function(i) {
			this.style.zIndex = ui.options.stack.min + i;
		});
		
		this[0].style.zIndex = ui.options.stack.min + group.length;
	}
});

})(jQuery);
/*
 * jQuery UI Sortable
 *
 * Copyright (c) 2008 Paul Bakaus
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * http://docs.jquery.com/UI/Sortables
 *
 * Depends:
 *	ui.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
		if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
		this.offset = this.element.offset();

		//Initialize mouse events for interaction
		this.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 = ($.isFunction(this.options.items) ? this.options.items.call(this.element) : $(this.options.items, this.element)).not('.ui-sortable-helper'); //Only the items of the sortable itself
		var str = []; o = o || {};
		
		items.each(function() {
			var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
			if(res) str.push((o.key || res[1])+'[]='+(o.key && o.expression ? res[1] : res[2]));
		});
		
		return str.join('&');
		
	},
	toArray: function(attr) {
		
		var items = ($.isFunction(this.options.items) ? this.options.items.call(this.element) : $(this.options.items, this.element)).not('.ui-sortable-helper'); //Only the items of the sortable itself
		var ret = [];

		items.each(function() { ret.push($(this).attr(attr || 'id')); });
		return ret;
		
	},
	/* 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;

		if(this.options.tolerance == "pointer" || this.options.forcePointerForContainers || (this.options.tolerance == "guess" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])) {
			return (y1 + this.offset.click.top > t && y1 + this.offset.click.top < b && x1 + this.offset.click.left > l && x1 + this.offset.click.left < r);
		} 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;

		if(this.options.tolerance == "pointer" || (this.options.tolerance == "guess" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])) {

			if(!(y1 + this.offset.click.top > t && y1 + this.offset.click.top < b && x1 + this.offset.click.left > l && x1 + this.offset.click.left < r)) return false;
			
			if(this.floating) {
				if(x1 + this.offset.click.left > l && x1 + this.offset.click.left < l + item.width/2) return 2;
				if(x1 + this.offset.click.left > l+item.width/2 && x1 + this.offset.click.left < r) return 1;
			} else {
				if(y1 + this.offset.click.top > t && y1 + this.offset.click.top < t + item.height/2) return 2;
				if(y1 + this.offset.click.top > t+item.height/2 && y1 + this.offset.click.top < b) return 1;
			}

		} 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();
	},
	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 = $.data(cur[j], 'sortable');
					if(inst && !inst.options.disabled) {
						queries.push([$.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.constructor == String) {
			var className = o.placeholder;
			o.placeholder = {
				element: function() {
					return $('<div></div>').addClass(className)[0];
				},
				update: function(i, p) {
					p.css(i.offset()).css({ width: i.outerWidth(), height: i.outerHeight() });
				}
			};
		}
		
		self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem)).appendTo('body').css({ position: 'absolute' });
		o.placeholder.update.call(self.element, self.currentItem, 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;
						
						//We also need to exchange the placeholder
						if(this.placeholder) this.placeholder.remove();
						if(this.containers[i].options.placeholder) {
							this.containers[i].createPlaceholder(this);
						} else {
							this.placeholder = null;;
						}
						
						this.currentContainer = this.containers[i];
						itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance, null, true) : this.rearrange(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

					}
					
					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;
		return true;	
			
	},
	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 = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
		if (!this.helper.parents('body').length) $(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(this.helper[0]); //Add the helper to the DOM if that didn't happen already
		this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortable-helper'); //Position it absolutely and add a helper class

		/*
		 * - 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.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.placeholder) this.createPlaceholder();
		
		//Call plugins and callbacks
		this.propagate("start", e);
		this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Recache the helper size
		
		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();
				
				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+Math.max(ce.scrollWidth,ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.currentItem.css("marginRight"),10) || 0),
					co.top+Math.max(ce.scrollHeight,ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.currentItem.css("marginBottom"),10) || 0)
				];
			}
		}

		//Set the original element visibility to hidden to still fill out the white space
		if(this.options.placeholder != 'clone')
			this.currentItem.css('visibility', 'hidden');
		
		//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.currentItem[intersection == 1 ? "next" : "prev"]()[0] != this.items[i].item[0] //no useless actions that have been done before
				&&	!contains(this.currentItem[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.direction = intersection == 1 ? "down" : "up";
				this.rearrange(e, this.items[i]);
				this.propagate("change", e); //Call plugins and callbacks
				break;
			}
		}
		
		//Post events to containers
		this.contactContainers(e);
		
		//Interconnect with droppables
		if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);

		//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.currentItem[0]) : i.item[0].parentNode.insertBefore(this.currentItem[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);
		
		if(this.options.placeholder)
			this.options.placeholder.update.call(this.element, this.currentItem, this.placeholder);
	},
	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.currentItem.offset();

			//Also animate the placeholder if we have one
			if(self.placeholder) self.placeholder.animate({ opacity: 'hide' }, (parseInt(this.options.revert, 10) || 500)-50);

			$(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) {

		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("stop", e, null, noPropagation);
			return false;
		}
		
		$(this.currentItem).css('visibility', '');
		if(this.placeholder) this.placeholder.remove();
		this.helper.remove(); this.helper = null;
		this.propagate("stop", e, null, noPropagation);
		
		return true;
		
	}
}));

$.extend($.ui.sortable, {
	getter: "serialize toArray",
	defaults: {
		helper: "clone",
		tolerance: "guess",
		distance: 1,
		delay: 0,
		scroll: true,
		scrollSensitivity: 20,
		scrollSpeed: 20,
		cancel: ":input",
		items: '> *',
		zIndex: 1000,
		dropOnEmpty: true,
		appendTo: "parent"
	}
});

/*
 * Sortable Extensions
 */

$.ui.plugin.add("sortable", "cursor", {
	start: function(e, ui) {
		var t = $('body');
		if (t.css("cursor")) ui.options._cursor = t.css("cursor");
		t.css("cursor", ui.options.cursor);
	},
	stop: function(e, ui) {
		if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);
	}
});

$.ui.plugin.add("sortable", "zIndex", {
	start: function(e, ui) {
		var t = ui.helper;
		if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex");
		t.css('zIndex', ui.options.zIndex);
	},
	stop: function(e, ui) {
		if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex);
	}
});

$.ui.plugin.add("sortable", "opacity", {
	start: function(e, ui) {
		var t = ui.helper;
		if(t.css("opacity")) ui.options._opacity = t.css("opacity");
		t.css('opacity', ui.options.opacity);
	},
	stop: function(e, ui) {
		if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
	}
});

$.ui.plugin.add("sortable", "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);