Layout changes

I've been messing around with the layout and navigation controls in the last few days. The page displays just right in Mozilla Firefox, but is still somewhat broken in Internet Explorer. I'm hoping to have the situation rectified soon.

I was hoping for some feedback on my click to hide / appear system I have setup for the posts and section menu's. Is this setup intuitive, and usable, or just a pain in the ass. I'd really appreciate it if you could play around with the site a bit, and comment on it. Thanks!