import flash.utils.Timer;
this.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
var myTimer:Timer = new Timer(1000,1);
myTimer.addEventListener("timer", function() {
//Do what ever you want. Like tween away a movie control using tweenmax.
TweenMax.to(control, 1, { alpha:0, ease:Linear.easeNone } );
});
myTimer.start();
private function onMouseMove(e:Event):void
{
control.alpha = 1;
myTimer.reset();
myTimer.start();
}