prettyPhoto is a jQuery based lightbox clone. Not only does it support images, it also add support for videos, flash, YouTube, iFrames. It’s a full blown media lightbox. The setup is easy and quick, plus the script is compatible in every major browser.
I added a functionality to personalize the non-fullscreen dimiensions of the picture
You can see the changes here:
https://github.com/quim3ra/prettyphoto/commit/4b8455a2827b45da5dc9fcc65cd55400a3bdf47b