AS3.0全屏自适应屏幕代码

var my_data:Date=new Date();

var shijian = my_data.getHours();

var my_Timer:Timer = new Timer(1000);

if ((shijian>10)&&(shijian<22)) {

 //trace("test it") 

}

var Time1 = 600;

my_Timer.start();

var fen;

var miao;

var time;

my_Timer.addEventListener(TimerEvent.TIMER,_showTxt);

function _showTxt(e:TimerEvent):void {

 Time1--;

 fen=Math.floor(Time1/60);

 time = Time1 - fen * 60;

 miao = time;

 if (miao<10) {

  miao = "0" + miao;

 }

 txt.text = fen + ":" + miao;

}