备忘 html5 canvas context2d/3d

http://dev.w3.org/html5/2dcontext/

优化要点

http://www.html5rocks.com/en/tutorials/canvas/performance/ 

音频测试

http://glimr.rubyforge.org/cake/canvas.html#AudioTest

简单的3d

http://dev.opera.com/articles/view/3d-games-with-canvas-and-raycasting-part/ 

http://dev.opera.com/articles/view/creating-pseudo-3d-games-with-html-5-can-1/ 

mozilla html5 教程

https://developer.mozilla.org/media/uploads/demos/p/a/paulrouget/html5-dashboard/demo_package/index.html 

w3schools

http://www.w3schools.com/html5/html5_ref_eventattributes.asp 

鼠标事件

http://simonsarris.com/blog/140-canvas-moving-selectable-shapes