SOMEONE HELP ME (Simple question about XML Photo Gallery URGENT!)

Its probably a real silly question, can someone help me out ? :hangover:


I would like to know what part of the code makes the main picture clickable like in this one: http://www.kirupa.com/developer/mx2004/thumbnails.htm

Here in this example, the thumbnails are clickable as well as the pic that appears.

HOW DO I MAKE THE MAIN PICS CLICKABLE ? HOW DO I ATTACH A LINK TO EACH OF THEM ?

[CENTER] Please Help Me!!![/CENTER]