Fix drupal 7 Firefox compatability

[login to view URL] has compatability issues with hover buttons & the login (username) box not being accessible to firefox clients. Please visit the website with a firefox 3+ browser to see what the issue is. Try clicking in the login box (wont work). Also, after you are logged in tabbed menu's will not work. I'm assuming this is a simple fix, since the problem started after a coder fixed a few small issues with the site.