Drag.Move=new Class({Extends:Drag,options:{droppables:[],container:false,precalculate:false,includeMargins:true,checkDroppables:true},initialize:function(c,b){this.parent(c,b);this.droppables=$$(this.options.droppables);this.container=document.id(this.options.container);if(this.container&&$type(this.container)!="element"){this.container=document.id(this.container.getDocument().body)}var a=this.element.getStyle("position");if(a=="static"){a="absolute"}if([this.element.getStyle("left"),this.element.getStyle("top")].contains("auto")){this.element.position(this.element.getPosition(this.element.offsetParent))}this.element.setStyle("position",a);this.addEvent("start",this.checkDroppables,true);this.overed=null},start:function(f){if(this.container){var b=this.container.getCoordinates(this.element.getOffsetParent()),c={},e={};["top","right","bottom","left"].each(function(g){c[g]=this.container.getStyle("border-"+g).toInt();e[g]=this.element.getStyle("margin-"+g).toInt()},this);var d=this.element.offsetWidth+e.left+e.right;var a=this.element.offsetHeight+e.top+e.bottom;if(this.options.includeMargins){$each(e,function(h,g){e[g]=0})}if(this.container==this.element.getOffsetParent()){this.options.limit={x:[0-e.left,b.right-c.left-c.right-d+e.right],y:[0-e.top,b.bottom-c.top-c.bottom-a+e.bottom]}}else{this.options.limit={x:[b.left+c.left-e.left,b.right-c.right-d+e.right],y:[b.top+c.top-e.top,b.bottom-c.bottom-a+e.bottom]}}}if(this.options.precalculate){this.positions=this.droppables.map(function(g){return g.getCoordinates()})}this.parent(f)},checkAgainst:function(c,b){c=(this.positions)?this.positions[b]:c.getCoordinates();var a=this.mouse.now;return(a.x>c.left&&a.x<c.right&&a.y<c.bottom&&a.y>c.top)},checkDroppables:function(){var a=this.droppables.filter(this.checkAgainst,this).getLast();if(this.overed!=a){if(this.overed){this.fireEvent("leave",[this.element,this.overed])}if(a){this.fireEvent("enter",[this.element,a])}this.overed=a}},drag:function(a){this.parent(a);if(this.options.checkDroppables&&this.droppables.length){this.checkDroppables()}},stop:function(a){this.checkDroppables();this.fireEvent("drop",[this.element,this.overed,a]);this.overed=null;return this.parent(a)}});Element.implement({makeDraggable:function(a){var b=new Drag.Move(this,a);this.store("dragger",b);return b}});