Don't make people guess with the navigation. As is, when you click the navigation buttons at the top, you have no idea where they are taking you. Use a rollover, or labels, or (not really the best solution, but better than current) setting the text of the status bar. Mystery navigation is a pet peeve of mine.
My point is that you are "inviting" people to click it and giving them nothing back for their effort. Its position on the page (top left) implies importance, so I'd make it do something or kill it, that's all.