What is the best way to get a layout like the following using HTML & CSS (can’t use CSS3)?
My main question is regarding the navigation bar floating at the middle of the top part of the inside container.
Also how would you suggest I create the nav bar? It needs rounded corners and roll over but no sub-menus for now.

(source: sevdev.com)
Clarification
I need help with the positioning of the navigation bar so that if the window is resized it stays in it’s position.
I can’t use CSS3 because it’s a corporate site, and many browsers the customers use are not compatible with CSS3
Working demo: http://vidasp.net/tinydemos/layout-demo.html
(I didn’t do the shadows or rounded corners – those are CSS3 features. If you want to have those features in older browsers, you will need work-arounds, but that’s another story…)