overLib javascript question (or Google Map API, if you are familiar)

Hi, I'm new to facebook programming. I'm having trouble following some of the documentation regarding javascript. I found a package called overLib that creates floating "tooltip"-like boxes up when the user performs a mouse function on the associated link.

I didn't find this topic mentioned in these boards, so I want to bring it up. I included the javascript in my facebook page and I get the error:

URLExceptionInvalid scheme for url (javascript:void(0);)

Looking at the rendered facebook page, its hard for me to tell if facebook server rendered it correctly or if there is some other problem.

Could someone PLEASE have a look at the overLib javascript and tell me if there is something special to be done before I can make it work?

I have tried the same thing with the Google Map API for javascript, and couldn't get it working. So if someone is more familiar with that one, I would appreciate some discussion on how to make it work.

Thanks,
Jim