Show HN: Facebook home interaction prototype using JavaScript (opens in new tab)

After all the rage about Quartz Composer being a better prototyping tool for designers, I wanted to make this quick proof of concept to show similar things are also possible using less proprietary technologies that have more relevance on the web.

Kind of a cool effect. How does it work? From glancing at the source code, it looks like you're calculating the force on a damped mass-spring system 60 times a second, using that to update the speed, and using that to update the position, until eventually it comes to a stop?

Looks fine on desktop. Doesn't work on iPad though.