I happend to stumble across a great gallery, does anyone have any ideas how this was created:
http://www.smallestphoto.com/  there is a details tab the slides down when you click on it, and displays comments about the image, does anyone know how this is done.  I would like to experiment with something simular to this.

Usyakuza

It’s the scriptaculous javascript library:
http://script.aculo.us/

Some good stuff there, but watch out for compatibility and users with javascript turned off.