After doing some digging, I’ve finally found a decent Javascript Library for Augmented Reality. It uses Flash to receive data from your web cam. From there, it looks for a marker in the video feed. From there, it can tell where the corners are. I took it a little further and threw our logo on top. I also made it scale to the size of the box, so it has some depth.
Original Code: http://code.google.com/p/js-aruco/
Our Application: http://switchboxinc.com/ar/