More madness I hear you cry! :o
Scripting can be invaluable for adding flexibility to a game / engine, but I was surprised just how easy it is to access LWJGL from JavaScript, while you probably wouldn't want to do everything from JavaScript you can!
a simple example here http://bedroomcoders.co.uk/lwjgl-everywhere-even-from-javascript/
a bit more complex with a textured shader here http://bedroomcoders.co.uk/lwjgl-and-javascript-taking-it-further/
Enjoy!