A lightweight customizable lightbox plugin for jquery. it supports photos, photo groups, slideshow, ajax, inline, and iframed content.

features:
* lightweight: 10kb of javascript (less than 5kbs gzipped).
* appearance is controlled through css so it can be restyled.
* can be extended with callbacks & event-hooks without altering the source
files.
* completely unobtrusive, options are set in the js and require no changes to
existing html.
* preloads upcoming images in a photo group.
* well vetted. colorbox is one of the top jquery plugins.