手机访问PC网站自动跳转到手机网站代码

<SCRIPT LANGUAGE="JavaScript">
function mobile_device_detect(url)
{
var thisOS=navigator.platform;
var os=new Array("iPhone","iPod","iPad","android","Nokia","SymbianOS","Symbian","Windows Phone","Phone","Linux armv71","MAUI","UNTRUSTED/1.0","Windows CE","BlackBerry","IEMobile");
for(var i=0;i<os.length;i++)
{
if(thisOS.match(os[i]))
{
window.location=url;
}

}
//因为相当部分的手机系统不知道信息,这里是做临时性特殊辨认
if(navigator.platform.indexOf('iPad') != -1)
{
window.location=url;
}
//做这一部分是因为Android手机的内核也是Linux
//但是navigator.platform显示信息不尽相同情况繁多,因此从浏览器下手，即用navigator.appVersion信息做判断
var check = navigator.appVersion;
if( check.match(/linux/i) )
{
//X11是UC浏览器的平台 ，如果有其他特殊浏览器也可以附加上条件
if(check.match(/mobile/i) || check.match(/X11/i))
{
window.location=url;
}
}
//类in_array函数
Array.prototype.in_array = function(e)
{
for(i=0;i<this.length;i++)
{
if(this[i] == e)
return true;
}
return false;
}
}
mobile_device_detect("http://m.16css.com");
</SCRIPT>

<script type="text/javascript">
try {
var urlhash = window.location.hash;
if (!urlhash.match("fromapp"))
{
if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios|iPad)/i)))
{
window.location="http://m.16css.com/";
}
}
}
catch(err)
{
}
</script>

<script type="text/javascript">
// JavaScript Document
function urlredirect() {
var sUserAgent = navigator.userAgent.toLowerCase();
if ((sUserAgent.match(/(ipod|iphone os|midp|ucweb|android|windows ce|windows mobile)/i))) {
// PC跳转移动端
var thisUrl = window.location.href;
window.location.href = thisUrl.substr(0,thisUrl.lastIndexOf('/')+1)+'mobile/';

}
}
urlredirect();
</script>

window.location.hash。还没有弄明白什么意思。