Because this is "hacker"news and people here like to reverse engineer things! Also, great work with the game. It's really fun and quite an interesting mind game once it starts getting faster and faster. I agree with the mobile app sentiment... it would be a fun game to play on a commute. Great job!
Blast! I came to the comments to post nearly the same code. Thanks though, yours is slightly better. I didn't know about .css(). It would be interesting to see a pure javascript implementation.