How is Google doodle Guitar implemented [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

What technology is used at the Go开发者_高级运维ogle homepage (guitarstrings)

Today is Les Paul's birthday. Google has this cool doodle to play the guitar.

I am wondering how it is implemented.

1. Does it use Javascript?
2. Does it use any HTML 5 feature?
3. How does it play sound?

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It uses the Closure compiler and closure tools developed by google to simplify development. HTML5 features are used. There might be the use of flash, like their previous Pacman implementation (depended on Flash)