import flash.utils.Timer;

var myTimer:Timer=new Timer(1000,11);

myTimer.addEventListener(TimerEvent.TIMER,onTimer);
myTimer.addEventListener(TimerEvent.TIMER_COMPLETE,onComplete);

myTimer.start();

function onTimer(event:TimerEvent):void{
	var count:int=myTimer.currentCount;
	var seconds:Number=(myTimer.delay*count)/1000;
	var minus:Number=11-seconds;
	trace(minus+"秒前");
		
}

function onComplete(event:TimerEvent):void{
	trace("終了");
	gotoAndPlay(2);
}