Drupal-module-shadowbox is a project mainly written in PHP and JAVASCRIPT, it's free.
$Id: README.txt,v 1.6 2008/06/01 22:55:57 psynaptic Exp $
Module created by Richard Burford, aka, psynaptic http://freestylesystems.co.uk
Shadowbox created by Michael J. I. Jackson http://mjijackson.com
"Shadowbox is a cross-browser, cross-platform, cleanly-coded and fully-documented media viewer application written entirely in JavaScript. Using Shadowbox, website authors can display a wide assortment of media in all major browsers without navigating away from the linking page." http://mjijackson.com/shadowbox/index.html
This module adds a modal popup/overlay media viewer to Drupal. Currently this module provides basic functionality and can be used to give thickbox/lightbox type functionality for viewing images. The plan for the future is to add more advanced configuration options and integrate with imagefield, imagecache, image and other modules.
See INSTALL.txt
See CHANGELOG.txt
There is currently a bug in Shadowbox when using a setting of 'Simultaneous' for 'Animation sequence'. A possible fix is posted on the Shadowbox forum: http://www.nabble.com/Box-builds-down-then-slides-up-into-place-to15718047.html#a15718047
There is currenly a bug when setting the 'Enable animation' setting to unchecked where the next/previous item cannot be found and the Shadowbox stalls.