Flash scaling

My question is regarding this gallery that I put together:

http://moparch.com/moparch/architecture/ds.html

My goal is to make it so the image scales with the size of the browser window. Right now the image only scales as the page shrinks horizontally. When the page shrinks vertically the image does not change size.

The page is made up of two flash movies, one for the images and one for the text and arrows. In dreamweaver I have set the image flash movie (the one on the left) to scale to 100% width and 100% height. I have set the text movie to be a fixed size.

If anyone could explain how to get my image movie to scale as the browser window shrinks both horizontally and vertically I would greatly appreciate it.

thanks