javascript library http://blind.iteye.com/blog/604244 http://w3ctech.com/p/812 http://database.51cto.com/art/201008/218533.htm http://developer.51cto.com/art/200906/129502.htm http://www.ituring.com.cn/article/898 出处:http://cnblogs.com/daishuguang