tried it on Fireworks, Mozilla, Opera, netscape and it worked perfectly, but the header break apart in Internet Explorer...

also, i think you should change the color of the text that appears when you rollover on the menu icons... I hardly noticed it and i was looking for some alternating text which might help if your images happens to load slowly...

Also it would be better if you use another color on the contents text... Its a great site and you should only take care of these little characteristics..