Hey everyone! I wrote this little toy... I'm glad you're all enjoying it.
NOTE: OSX, Chrome dev channel (12.0.733.0 dev is the version I wrote this in) w/ Web Audio API enabled is the only way this is going to work for you. Everyone else will have to wait until the API is implemented in your OS of choice.
Lastly, there are very _real_ dangers of exposure to high frequencies such as: hearing loss, nausea, dizziness and vertigo (to name a few). Running this code is your choice, so handle with care!