Oh crap. Sorry to all the users who are not in the USA. I totally forgot I had a script that was redirecting all non-usa traffic to bunnies.com. Since it's a local site, I didn't want any precious bandwidth going to users who weren't going to use the site legitimately.
I think you might be able to go to
RebelStudent.com - Dixie State College Used Textbook Exchange to circumvent the script.
Niki, yes I do use some Ajax. When you click on the subject, it gets the class list from a database via javascript/php. I found that tizag.com has a very easy tutorial on beginning ajax. It's cool, check it out.
Thanks everyone for taking a look at it!