http://site518.net/javascript-date-handle/
http://developer.51cto.com/art/201212/374902.htm
http://ent.cnr.cn/focus/201311/t20131111_514093539_13.shtml
http://www.oschina.net/question/12_32460?sort=default&p=4#answers
http://www.oschina.net/p/varnish