Facebox is a jQuery-based, Facebook style lightbox which can display images, divs, or entire remote pages. It’s simple to use and easily customizable.
Requires jQuery 1.2.1; You’ll also need a loading image, close label, four corners, and solid border images in addition to the JavaScript and CSS files.
Developed by Chris Wanstrath for FamSpam; This jQuery Plugin is available for download under the MIT License. You can find further information, demos & download on Facebox Website.
Been using it for quite a while now, very useful.