Diggit Drupalextras

Hello all

I am having a hard time figuring out how a set of images can be made to display in a specific area on a page without having to reload the page.

Here is a drupal site using the exact method I would like to learn about:

http://www.sanyo.com.au/products/commercial-display-solutions/plasma/pdp...

When you click on the thumbnail you get the big image above it.

Is this the work of a specific module or is custom programing all the way?,

Any wizard to explain this magic? :)

Serving