How can I code this awesome glowing border effect with CSS and JavaScript?

Question

This form has an awesome effect when you focus on one of its fields:

http://labs.dragoninteractive.com/panel/demo/

Any clues on how I can recreate this? Here are

Answer 1

The color changing action occurs as the position of rmap.jpg (the very large colorful image) is animated. There is an .png with alpha-transparencies which acts as matte over rmap.jpg, creating the nice soft color transition. The animation is handled using jQuery.

Peter Schmalfeldt created a demo which is also downloadable.