javascript获取方式：
<script>
var s = navigator.systemLanguage;
switch(s){
case "zh-cn":
document.location.href = 'http://www.google.cn';
break;
case "zh-tw":
document.location.href = 'http://www.google.com.tw';
case "zh-hk":
document.location.href = 'http://www.google.com.hk';
break;
default:
if(s.split("-")[0]=="en"){
document.location.href = 'http://www.google.com';
}else{
document.location.href = 'http://www.google.com';
}
}
</script>
