Colorbox - a jQuery lightbox

Colorbox is a lightweight customizable lightbox plugin for jQuery. It accepts settings from an object of key/value pairs, and can be assigned to any HTML element.

Colorbox - 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 and currently in use in over 600,000 websites.