_alpha =?

i am trying to when you rollOver a MC have an external swf file fade in and when you rollOut it fades out.

i am using


longDay_mc.onRollOver = function() {
	 fade.loadMovie("box2.swf");
	 _alpha = ???
}

Thats where i get lost. I have tried to search the forum but couldn’t find anything.

If someone could help me that would be great!

Thanks