Fading in content

Hi.

I want this swf to fade in when the text in it is loaded. Later on, it will be loaded into a containerMC in the master.swf. I’ve tryed smt like this:
function animate():Void {
myMc._alpha++;
updateAfterEvent();
}
myMc._alpha = 0;
var nInterval:Number = setInterval(animate, 100);

myMc is the whole contents of info.swf, but flash gives me an error every time.

Now I know that I can add a white rectange tween and fade it, but the master.swf that I’m loading it in, hasn’t got a solid white bg.

Thx.