AS2 uniform scale on screen resize

Hi,

I'm making a swf which resizes 100% in height and width according to screen resizing.

Can someone help me understand how to position my instances,
and how to rescale them uniformly.

I'm using the listeners here below:

resizer = function () {
}

resizer();

sizeListener = new Object();
sizeListener.onResize = function() {
resizer();
}

Stage.addListener(sizeListener);

thanks
Xav

Ok, I found this code which does what I want it to do if my .mc was rectangular from corner to corner.
But I have animated .mc which is all over the place.
how can I use this bg_ratio also on this .mc to scale it uniformly so that it comes in from the bottom left and ends at the top right corner?

i hope this makes sense,
thanks
Xav

[HIGHLIGHT=Actionscript]
Stage.scaleMode = "noScale"
Stage.align = "TL";

bg_ratio = bg_mc._width / bg_mc._height;

stageResize();

function stageResize():Void {
stage_ratio = Stage.width / Stage.height;
if (stage_ratio >= bg_ratio) {
bg_mc._width = Stage.width;
bg_mc._height = bg_mc._width / bg_ratio;
} else {
bg_mc._height = Stage.height;
bg_mc._width = bg_mc._height * bg_ratio;
}
}

var stageListner:Object = new Object();
stageListner.onResize = function():Void {
stageResize();
};

Stage.addListener(stageListner);
[/HIGHLIGHT]