"Load the page with the thumbnails, and when the user clicks on
any thumbnail, the browser downloads the full size version of the
image and displays it.
"That's what Lightbox is all about. It is a fancy name given to
a simple solution to a common problem. It has been created by
Lokesh Dhakar. Many people have implemented the same concept with
minor variations. Lightbox uses the Prototype framework and the
Scriptaculous Effects library. Similarly, there is an
implementation that uses the jQuery library. Let us see how you can
use Lightbox on your website."