FancyBox is a tool for displaying images, html content and multi-media in a
Mac-style "lightbox" that floats overtop of web page. It was built using the
jQuery library. Licensed under both MIT and GPL licenses.

Features:
- Can display images, HTML elements, SWF movies, iframes and also Ajax
  requests.
- Customizable through settings and CSS.
- Groups related items and adds navigation.
- If the mouse wheel plugin is included in the page then FancyBox will
  respond to mouse wheel events as well.
- Support fancy transitions by using easing plugin.
- Adds a nice drop shadow under the zoomed item.

WWW: http://fancybox.net/