//dragStop函數，定義放開圖片發生動作
function dragStop(me:MouseEvent):void{
	me.target.stopDrag();//停止拖曳
	var object=me.target;//取得目標實體
	switch(object){
	   case pic1_mc :
	     if (me.currentTarget.hitTestObject(hittest1)){ pic1_mc.x=59;pic1_mc.y=95;}
		 break;
	   case pic2_mc :
	     if (me.currentTarget.hitTestObject(hittest2)){ pic2_mc.x=224.9;pic2_mc.y=95;}
		 break;
	   case pic3_mc :
	     if (me.currentTarget.hitTestObject(hittest3)){ pic3_mc.x=59;pic3_mc.y=323;}
		 break;
	   case pic4_mc :
	     if (me.currentTarget.hitTestObject(hittest4)){ pic4_mc.x=224.9;pic4_mc.y=323;}
		 break;
	   }
}