import flash.utils.Timer;
import flash.events.TimerEvent;
var frameR:Number=stage.frameRate;
var t:Timer=new Timer(1/frameR*1000)
t.start();
t.addEventListener(TimerEvent.TIMER,fu)
function fu(e:TimerEvent){
trace("ok")
}
import flash.utils.clearInterval;
stop();
t.stop()
t.reset();
play();
t.start