用js判断是否为手机浏览，如果是手机浏览就跳转到手机站

<script type="text/javascript">

function browserRedirect() { 

var sUserAgent= navigator.userAgent.toLowerCase(); 

var bIsIpad= sUserAgent.match(/ipad/i) == "ipad"; 

var bIsIphoneOs= sUserAgent.match(/iphone os/i) == "iphone os"; 

var bIsMidp= sUserAgent.match(/midp/i) == "midp"; 

var bIsUc7= sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4"; 

var bIsUc= sUserAgent.match(/ucweb/i) == "ucweb"; 

var bIsAndroid= sUserAgent.match(/android/i) == "android"; 

var bIsCE= sUserAgent.match(/windows ce/i) == "windows ce"; 

var bIsWM= sUserAgent.match(/windows mobile/i) == "windows mobile"; 

if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) { 

window.location.href= '手机网站地址'; 

} else { 

window.location= '电脑网站地址'; 

} 

} 

browserRedirect(); 

</script>