Looks like there's already a very similar submission: http://js1k.com/2013-spring/demo/1382 http://js1k.com/2013-spring/demo/1382. This one however is significa

Looks like there's already a very similar submission: http://js1k.com/2013-spring/demo/1382 http://js1k.com/2013-spring/demo/1382. This one however is significantly better.