Random появления Movie clip-a в заданных пределах(x;y)

[udaaff]

var depth:Number = 0;
var intervalID:Number = setInterval(intervalHandler, 20);
 
function intervalHandler():Void
{
	var mc:MovieClip = attachMovie("id", "mc" + depth, depth++);
	mc._x = Stage.width * Math.random();
	mc._y = Stage.height * Math.random();
	mc.onEnterFrame = mc_onEnterFrameHandler;
}
 
function mc_onEnterFrameHandler():Void
{
	this._alpha -= 5;
	if (this._alpha < 0)
		removeMovieClip(this);
}