A free photo gallery script that is easy to use, unobtrusive, handles missing images and works in all the major web browsers. Powered by MooTools, this photo gallery offers transition/effects comparable to Flash based galleries.

If you are looking for a unique JavaScript based photo gallery, UvumiTools Gallery may work. Unfortunately there is no support for pagination, which means that it is only suitable for small galleries with less than 20 or 30 images.
How it Works
First, the thumbnails are loaded. When they are ready, users can click a thumbnail and watch the gallery transform into a slideshow, which is then navigated by clicking the left column or by scrolling with the mouse wheel. A click on the photo being displayed brings the user back to the contact sheet view.
You can find further information, demo & download on UvumiTools Website



