Newbie jQuery & theming question

Newbie jQuery & theming question


I started looking at jQuery today because an open source project I'm
using is using jQuery for tabs. From what little I can tell, it's
using jquery-flora.tabs.css and also jquery.tooltip.css and it's on
jquery 1.2.6. When I started looking into theming jQuery, I came
across this
http://docs.jquery.com/UI/Theming
And in particular, the use of ThemeRoller app that generates pre-
rolled themes. I don't understand jQuery UI well enough to know how
the 2 differ, if anyone can offer some high level insights, it'll be
much appreciated. Thanks.
Bob