What plugin is this?

Hey guys.

As you can see on this site, http://theme.happycomb2b.com/sizemttrs/ when u hover over a image it fades over to blue and when you click it you can like go from picture to picture in the small menu thing over the big picture.

Is this a plugin or what is it?

Thanks

It uses jQuery, a JavaScript library that is very popular for things like this. There is a link in the head of the page to the jQuery library, and further down there is another script that contains the instructions for that effect.

Thanks ralph!