JS实现的HashTable类来记录删除的记录的ID跟Name
http://www.cnblogs.com/hongzhenhua/archive/2008/05/19/1202486.html
高效HashTable
http://blog.csdn.net/High_Mount/archive/2008/02/20/2109814.aspx
JavaScript Implementation of Hashtable
http://www.comet.co.il/en/articles/hash/article.html