『gaziman』

import flash.events.MouseEvent;

import flash.events.Event;

var xPos:Number = 10;

var yPos:Number = -10;

function init(e:MouseEvent):void

{

     mcBall.addEventListener(MouseEvent.MOUSE_DOWN, moveBallHandler);

     stage.removeEventListner(MouseEvent.MOUSE_DOWN, init);

}

function moveBallHandler(e:Event):void

{

     if(mcBall.x <= 0) {

          xPos *= -1;

     } else if(mcBall.x >= stage.stageWidth - mcBall.width) {

          xPos *= -1;

     } else if(mcBall.y <= 0) {

          yPos *= -1;

     } else if(mcBall.y >= stage.stageHeight - mcBall.height) {

          yPos *= -1;

     }

     mcBall.x += xPos;

     mcBall.y = yPos;

}

stage.addEventListener(MouseEvent.MOUSE_DOWN, init);