Black rectangle fullscreen

If you look at my website, www.digitalangel.se and go to portfolio you can see a 2 black box coming up. Now I just want one black rectangle coming up as shown in the beatiful Mspaint sketch.

http://www.digitalangel.se/skiss.jpg

So I dont want the whole flash movie to be fullscreen, just the box cover 100% width. How do I do that?