drop down menu probelms

[JimmyN]

Hi everyone,
After making some new drop down menu's, they work with ie6, ff but i dont think they do with ie7.

The probelm now is, when on another pc, i went to the forums and the drop down menu's didnt work. The heading where there but it seemed like they where disabled for vistiors, so when you log in they work again.

Url is over here: www.oz-consolemods.net/forums

Any ideas what is wrong (if required i will post navbar code, just let me know)

Thanks