Liquid / Fluid / Scalable Flash SWFs - How the...?

Hi.

It's fairly simple to create a liquid / fluid image with html/css.

Not so much with Flash.

There is a super helpful example of how this works with images -> http://clagnut.com/sandbox/imagetest.php/

But how on earth does it work with Flash? When I give width="100%" to a Flash object, it does in fact scale horizontally - cool. When you apply height="100%", no such luck.

Any idea how to make a swf inside a div resize based on the div's size (you know, like a pic, div, table, etc etc does)?