Gracias de antemano!
Código :
function opacidadMc(mc:MovieClip):Boolean { mc._alpha = 100; var fin:Boolean = false; mc.onEnterFrame = function(fin) { var difAlpha:Number = (this._alpha-0)*.25; this._alpha -= difAlpha; if (this._alpha<=0) { delete this.onEnterFrame; this._alpha = 0; fin = true; } }; if (fin) return true; }[/code]