Colorbox jQuery Lightbox

Colorbox is a lightweight customizable lightbox plugin for jQuery 1.4.3+.

Features:

> Supports photos, grouping, slideshow, ajax, inline, and iframed content.
> 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.