html5 tetris game

This is a simple html5 tetris game, a great practice for my html5 skills, I hope you enjoy it.https://github.com/infusion/HTML5-Tetris and https://github.com/jakesgordon/javascript-tetrisprovide me a lot of insights in how to make a tetris game, they deserve some credits.

Improvements in the future (if I have time):

• multiplayer support
• scores ranking among all the players in the history
• better UI effects! Like comboing, line clearing, scoring
• better UX, like the way the tile is rotating, moving, etc.