Mine

MovieClip.prototype.fadeOut = function(unloadOnFinish:Boolean){
	this.onEnterFrame = function(){
		if(this._alpha >0){
			this._alpha -=10;
		}
		else {
			delete this.onEnterFrame;
			if(unloadOnFinish == true) { 
				unloadMovie(this); 
			}
		}
	}
}

function allFadeout(){
	for(i = 0; i<=12; i++){
		this["image"+i].fadeOut(true);
	}
}