Hi,
I remember there was a similar hover tip script at
www.dynamicdrive.com
but it didn't have the part you wanted which was to automatically
search the page and add the hover popups so I added that functionally.
You can check it out, it's just a starter page but is should get you
going. >>
http://www.visionjinx.net/demos/tooltips.htm
You can easily add your keyword:definition to a single object and
select what elements to apply it to and if you want it to only replace
the first instance of the keyword or all of them and if you want it to
be case sensitive.
Hope that helps :-)
Cheers!
Vision Jinx