javascript 冒泡

http://www.cnblogs.com/hh54188/archive/2012/02/08/2343357.html

http://blog.csdn.net/xuefeng0707/article/details/8674951

 http://hi.baidu.com/coldwindsnow/item/e6002a2aecf6a0cadcf69a81

http://www.csharpwin.com/dotnetspace/12009r2748.shtml

http://www.mangguo.org/javascript-events-order-bubbling-and-capture/

http://hi.baidu.com/dwspider/item/9e51c4e37104bc2e6cabb808