Getting NAVBAR 2 to work on a mac

[RAVENNL]

I used the NAVBAR II from dynamicdrive.com in ma page. It works like a charm on a pc, but when viewed on a mac, the menu has some bugs. The foldout menu's not always fold out when moving a mouse over them.. Can somone have a look plz?

http://www.dynamicdrive.com/dynamicindex1/topnavbar.htm

Or do any of you know a simmilar navbar wich will work on a mac?

Thanks,

RAVEN