[Javascript] disabled menus

[Chuck Soper]

Hello,

I'm trying to display disabled menu items. I'm fairly new to 
JavaScript, but I've seen disabled menu items implemented in 
commercial JavaScript menu packages. I don't need all of the bells 
and whistles of a commercial JavaScript menu, I just want to 
selectively disable menu items. That is, I don't want to disable all 
of the menu items in a given menu.

For example, I'd like to disable the third menu item on this page:
http://www.velofish.com/menu

Here is the JavaScript source:
http://www.velofish.com/menu/menuTest.js

Does anyone know of a way to do this?

Thanks,
Chuck