[jQuery] how to make home page like jqueryUI

Hi
I just saw the new homepage for jquery UI. I must say it looks
fantastic.
Long time ago I saw a jquery plugin that does something similar to
what they have done for their demo section.
Does someone know how to make an app that would replicate their demo
section? or maybe a plugin that is out there?
http://ui.jquery.com/demos is the link I am talking about.
thanks!