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要完成此效果把如下代码加入到<head>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
netscape = (navigator.appName.indexOf("Netscape")
!= -1);
version4 = (navigator.appVersion.indexOf("4.") !=
-1);
if (netscape && version4) {
ip = "" + java.net.InetAddress.getLocalHost().getHostAddress();
if (ip.indexOf("235.12") >= -1)
// 这是想要禁止访问的IP例如: 235.12.xxx.xxx
{
alert("You are not permitted to access this site.");
history.go(-1);
}
}
// End -->
</script>
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