AS3.0中一个小疑点

AS3.0中一个小问题
private function GetInitialization():void
{
Paneltop = new Panel(802,35);
Paneltop.name = "Paneltop";
this.addChild( Paneltop );

this.addEventListener(MouseEvent.CLICK, playPanel); //这样的话点击元素后没有效果
  //求指导。。。

}

private function playPanel(e:Event):void
{
trace("1");
}


[解决办法]
private function playPanel(e:Event):void//这里写错了。(e:Event)应为：(e:MouseEvent)
{
trace("1");
}
[解决办法]
this.stage.addEventListener