ActionScript 2.0 :: Randomly Place Mc On Stage EXCEPT For One Area?

I want to load some mcs randomly on the stage, except for a footer area at the bottom of the stage. Is there a way to exclude just a certain part of the stage using something like Math.random()*Stage and then specifying the bottom 300 pixels as off limits?

I'm using the whole stage because the swf is embedded 100% across the browser, so I can't restrict the dimensions.

Code:
onClipEvent (load) {
x = this._x=Math.random()*Stage.width;
y = this._y=Math.random()*Stage.height;
}