http://www.cnblogs.com/lipan/archive/2011/03/08/1966463.html
http://www.cnblogs.com/lipan/archive/2011/03/08/1977691.html
http://www.cnblogs.com/lipan/archive/2011/03/11/1980227.html
http://www.cnblogs.com/lipan/archive/2011/03/17/1986616.html
http://www.cnblogs.com/lipan/archive/2011/03/21/1989409.html
http://www.cnblogs.com/lipan/archive/2011/03/21/1989409.html
http://www.cnblogs.com/lovecindywang/archive/2010/05/16/1736934.html
http://www.cnblogs.com/ivanyb/archive/2011/11/15/2249515.html