display item description on same page, on click

[shermsinc]

Example. oscardelarenta.com > shop online > fine jewlery

Without using flash, Can I use ajax to create a lighweight function like this
(from a cms system such as joomla)

I appreciate your thoughts. If you are interested in freelance work, please contact me! shermsinc@gmail.com

[Snookerman]

Do you mean the breadcrumbs? I think they are built into Joomla, take a look at this page to see how to use them:
http://docs.joomla.org/How_do_you_get_rid_of_the_breadcrumbs%3F

Good luck!