少加改动即可
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT>
var tid
N=(navigator.appName.indexOf("Netscape")!=-1)
M=(navigator.appName.indexOf("Microsoft")!=-1)