//drag函數，定義在圖片上按下按鈕時發生動作
function drag(me:MouseEvent):void{
	me.currentTarget.useHandCursor = true;//這個影片片段顯示手指游標
	var object=me.target;//取得目標名稱
    if(object.enabled==true){//拖曳前先判斷如果元件啟用狀態為true，才能拖曳
	  //將目標交換到容器(這個場景)的最上方
	  this.setChildIndex(object,this.numChildren-1);
	  //開始拖曳目標
      me.currentTarget.startDrag();
	}
}

//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;
		     pic1_mc.enabled = false;
			 }
		 break;
	   case pic2_mc :
	     if (me.currentTarget.hitTestObject(hittest2)){ 
		     pic2_mc.x=224.9;pic2_mc.y=95;
			 pic2_mc.enabled = false;
			 }
		 break;
	   case pic3_mc :
	     if (me.currentTarget.hitTestObject(hittest3)){ 
		     pic3_mc.x=59;pic3_mc.y=323;
			 pic3_mc.enabled = false;
			 }
		 break;
	   case pic4_mc :
	     if (me.currentTarget.hitTestObject(hittest4)){ 
		     pic4_mc.x=224.9;pic4_mc.y=323;
			 pic4_mc.enabled = false;
			 }
		 break;
	   }
}