http://www.cnblogs.com/menlsh/archive/2013/03/15/2962350.html

http://www.tuicool.com/articles/IveeI3

http://www.cnblogs.com/zhangs1986/archive/2013/01/17/2864536.html

http://www.cnblogs.com/allin/archive/2010/05/11/1732200.html

http://yahaitt.iteye.com/blog/453060