Killtimer (similar to clearInterval)

[nate51]

I am using an AS that creates a simple timer for a slideshow (see code below)

MovieClip.prototype.timer = function(sec) {
	//create time mc and loop
	this.createEmptyMovieClip("time", 1);
	this.time.t0 = getTimer();
	this.time.t2 = sec*1000;
	this.stop();
	this.time.onEnterFrame = function() {
		this.t1 = getTimer()-this.t0;
		if (this.t1>this.t2) {
			this._parent.play();
			delete this.onEnterFrame;
		}
	};
};
MovieClip.prototype.killtimer = function() {
	delete this.time.onEnterFrame;
};

This allows me to drop simple

timer(5);

in my frames for lets say a 5 second pause.

The second part of the code for killtimer works when on a frame, but when I try to apply it to a button it doesnt work.

Has anyone used anything similar to this or know how to make it work in a button?