[AS3] 객체 마우스 오버 액션 처리

import flash.events.MouseEvent;
redCircle.addEventListener(MouseEvent.MOUSE_OVER, onCircleClick);
blueCircle.addEventListener(MouseEvent.MOUSE_OVER, onCircleClick);
greenCircle.addEventListener(MouseEvent.MOUSE_OVER, onCircleClick);

function onCircleClick(event:MouseEvent):void{
trace("클릭한 원은 " + event.target.name + "입니다");
var circle:MovieClip = MovieClip(event.target);
var highestDepth:Number = numChildren - 1;
setChildIndex(circle, highestDepth);
}