由于2.0版有人反应聊天内容会重复，而我在几个win2000+iis5.0上测试时均为发现这个问题，因此我也没有办法找到错误的代码。所以我决定开始编写这个3.0版。为了避免再次出现算法的问题，3.0版的算法完全不同于2.0版，希望可以避免这个问题。3.0版听取了网友的建议，将采取数据库以及权限分级的功能，不同的等级具有不同的功能。-Since version 2.0 was reflected in the chat will be repeated, and I found this issue when testing both on several win2000+ iis5.0, so I have no way to find the error code. So I decided to start writing this 3.0 version. To avoid the problem using again, completely different　the version 3.0 Version 2.0 algorithm, hoping to avoid this problem. 3.0 advice　friends, will take the　and classification authority functions, different levels have different functions.