Um, I
did actually realize that it was javascript in use by the gimp people.

I was wondering more if there is something more or less finished and ready to use for that, like a plugin for WB. Or at least something that comes with a sort of editor. Doing all of that stuff "on foot" would be a pain and too complex to manage. Apart from that, there are two other people who have to maintain the website and these too don't even know what javascript is.

So I need something with a front-end.
What you gave as an example is a good idea but won't work for me because of the layout. There will be something like 50 or so links on a page and letting them open like that would lengthen the page far too much. So I would actually prefer some sort of popup.
Regards,
Chris