jQuery/JS: Looking for a way to animate a cube in 3D perspective

Question

I've been searching for a way to have a JavaScript animation (preferably using jQuery) behave like a rotating 3D cube, similar to this script:

http://keith-wood.name/imageCube.html

What stops me from settling with Keith's solution is the possibility for a more smoother and better transition between the images. Is it possible to make a more realistic version using only JS?

-Staffan