It's the most readable in Safari, but it looks fine in Mac IE 5.0 and Mac Firefox. Only two small details in Explorer (as usual--man, do I dislike that lame-o, spawn-of-the-devil browser) that you can fix if you care.
The navigation bar in the header lost the centered text (they shift to the right and touch the divider bar) and the hover lights up only half of the navigation button whilst hovering.
Explorer messes with my screen capture program on my Mac, so I couldn't get a capture of the hover problem (see the link below). I was trying to show how it only hovers properly on the left side of each button, through the first two letters of each word.