mark

http://fex.baidu.com/blog/2014/05/what-happen/
http://blog.csdn.net/xiao__gui/article/details/17298437
http://www.cnblogs.com/dolphinX/p/3460545.html
http://blog.csdn.net/cxm_hwj/article/details/6690058
http://blog.csdn.net/xiaotian15/article/details/8625302
http://blog.csdn.net/world_hello_100/article/details/18601715
http://www.cnblogs.com/xdp-gacl/p/3855702.html
http://blog.csdn.net/lbuskeep/article/details/6160371
http://goodcandle.cnblogs.com/archive/2005/12/10/294652.aspx