This is an _alpha property changer for movieclips that can appear or disapper them smoothly.

Example:
my_Mc.appear();
my_Mc.disappear();

//@Created By Eser Yogurtcu
MovieClip.prototype.appear = function() {
	this.onEnterFrame = function() {
		if (this._alpha < 101) {
			this._alpha += 8;
		} else {
			delete this.onEnterFrame;
		}
	};
};
MovieClip.prototype.disappear = function() {
	this.onEnterFrame = function() {
		if (this._alpha > -1) {
			this._alpha -= 8;
		} else {
			delete this.onEnterFrame;
		}
	};
};