korkus2000 - 2:43 am on Sep 7, 2002 (gmt 0)

Here is an earlier thread that covered what you are speaking of. They have navigation they are showing and hiding onMouseOver and onMouseOut. You want onClick attributes. It does need some modification but it may send you in the right direction.
[webmasterworld.com...]

you may also want to see this code
[slackerhtml.com...]
It also uses mouseover.