as3鼠标点击特效

import fl.transitions.easing.*
import fl.transitions.Tween;
var circle:Sprite=new Sprite()
var mytime:Timer
stage.addEventListener(MouseEvent.MOUSE_DOWN,onclick);
function onclick(e:MouseEvent) {
  var mytime:Timer=new Timer(1000,1)
  mytime.start()
  mytime.addEventListener(TimerEvent.TIMER,ontimer)
  var circle=makeCircle(1,3);
  addChildAt(circle,0);
  circle.x=mouseX;
  circle.y=mouseY+5;
  var mytweenw:Tween=new Tween(circle, "width", Back.easeOut, circle.width, circle.width*3, 1, true);
  var mytweenh:Tween=new Tween(circle, "height", Back.easeOut, circle.height, circle.height*2, 1, true);
  var mytweeny:Tween=new Tween(circle, "y", Back.easeOut, circle.y, circle.y-15, 1, true);
}
function ontimer(e:TimerEvent){
  removeChildAt(0);
}

function makeCircle(line:int=2,w:int=30) {
  var sprite:Sprite=new Sprite();
  var circle1:Sprite=new Sprite();
  var circle2:Sprite=new Sprite();
  circle1.graphics.lineStyle(line,0xff0000)
  circle2.graphics.lineStyle(line,0xff0000)
  circle1.graphics.drawCircle(0,0,w*.6);
  circle2.graphics.drawCircle(0,0,w*2);
  addChild(sprite);
  sprite.addChild(circle1)
  sprite.addChild(circle2)
  return sprite;
}