1. JavascriptжߵԣϵͳȻʹ߶йˣվǷϵͳĬʹ߷йˣӢվ 
ŵ㣺жϷӳٶȿ졣
ȱ㣺׼ȷпйûϲӢİϵͳʹϵͳ 


<script>
var Browser_Agent = navigator.userAgent;//Ϊie
if(Browser_Agent.indexOf("MSIE")!=-1){
var a=navigator.browserLanguage;
if(a !="zh-cn"){
location.href="Ӣվ";
document.write("IP");
} else 
document.write("IP");
} else{
var b=navigator.language;//ie
if(b!="zh-CN"){
location.href="Ӣվ";
document.write("IP");
} else 
document.write("IP");
}
</script>



2.ʹIPIPж
ŵ㣺ж׼ȷ
ȱ㣺ӦٶûJavascript졣 
ҪһPHPIP⣺ip.zip
վͷjqueryж



<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
<script type="text/javascript" language="javascript">
function initurl() {
$.ajax({
type:"GET",
url:"checkip.php",
dataType:"html",
data:"&time="+new Date(),
cache: false,
async: false,
beforeSend:function(XMLHttpRequest){
},
success:function(msg) {
//ֵΪ1ʾΪйip
if(msg == 1){
alert('IP');        
}else {
alert('IP');
//location.href="Ӣվ"; 
}
},
complete:function(XMLHttpRequest,textStatus) {
},
error:function() {
}
});
}
</script>
<body  onload="initurl()">
</body>  


checkip.php

<?php
$userip=$_SERVER['REMOTE_ADDR'];
include_once('lib/iplimit.class.php');//ipļ ip.zipȫļlibĿ¼
$iplimit = new iplimit;
if($iplimit->setup($userip)){
echo 1;
}else{
echo 2;
}
?>
ַʵжIPѡ־Ϳľˡ
