FP 2000 is great. But Netscape doesn't see my image rollovers?

[eb7g]

Hi there

Ok, this is a simple question for most of you, sorry.

I am making a web with FP 2000. In it I have a menu page, here:

http://www.roboneo.com/menu.html

I have the image rollovers to display the menu items in red, from black
on mouse over. It works in Internet Explorer, but in Netscape is has an
ugly blank. Can anyone tell me how to fix it, or give me a good html
code to use and tell me where to insert it?

Many thanks gurus.