How to SCALE a movieClip proportionately with onResize

I’m trying to figure out how to SCALE a movieClip proportionately when the user resizes the browser window.

I was able to successfully scale the background to fill the browser window, but that was easy since there was no math involved…

I don’t want to use _width / _height because when I create the movieClip container, I had to scale it down to 85 (since the swf’s that I’m loading are larger than I want them to be), so I want to use _xscale / _yscale, if possible…

Here’s the code snippet:

//scale parent container
container_mc._xscale = 85;
container_mc._yscale = 85;

//object to receive the screen events
stageListener = new Object();
//function for the event to listen for
stageListener.onResize = function (){
//resize stuff here

bg._xscale = Stage.width;
gradBG._xscale = Stage.width;

//container_mc._xscale = some formula;
//container_mc._yscale = some formula;

//assign a listener for the Stage object
Stage.scaleMode = “noScale”;

Any suggestions would be greatly appreciated - thanks in advance:)