AS ease Equation help

1

I have about 15 movie clips in a movie that i want to scale with ease. Ive tried doing this a number of different ways. all of which have woked but they severely slow down the perfomance of my site.

ideally i would like to use penners equations

I want to have a function on the first frame of the main timeline

i.e


#include "easing_equations.as"
/////////////////////////////////////

function doScale() {
	callback_txt.text = "";
	//
	var w = parseFloat(destw_txt.text);
	var h = parseFloat(desth_txt.text);
	var dur = parseFloat(dur_txt.text);

	square_mc.scaleClip("easeInOutCubic", w, h, dur);
	//callback event invoked when tweening is done
	square_mc.onScaleDone = function() {
		delete this.onEnterFrame;
	//	callback_txt.text = "callback - scaling done";
	};
}

then call the function like this:


square_mc.scaleClip("easeOutCubic", 300, 150, 30);

but i want to have it delete this.onEnterframe
when the scale is complete.

can anybody help set up this function properly so it doesnt bog down the processor?