100% by 100% flash movies

I am trying to make a flash movie that fills the browser (100% * 100%). The problem is, when the user increases his resolution, the contents of my flash movie increase or decrease is size.

This is espacially annoying since I want to have a fixed size for the content, but a background that can increase or decrease in tiling depending on the user’s screen resolution.

Take a look at this sites, beautifully executes as 100% x 100% movies but keeping their content intact.

http://www.crashshop.com/site.html


http://www.south.uk.net/