<script type="text/javascript">

function fBrowserRedirect(){

　　var sUserAgent = navigator.userAgent.toLowerCase();

　　alert(sUserAgent);  //获取浏览器和手机的信息

　　//匹配信息里的关键字

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

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

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

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

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

　　if(bIsIpad){

　　　　alert('Ipad');

　　　　//执行Ipad操作

　　}

　　if(bIsIphoneOs){

　　　　alert('Iphone');

　　　　//执行Iphone操作

　　}

　　if(bIsAndroid){

　　　　alert('Android');

　　　　//执行android操作

　　}

}

fBrowserRedirect();

</script>

<script type="text/javascript">

var bForcepc = fGetQuery("dv") == "pc";

function fBrowserRedirect(){

 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){

  var sUrl = location.href;

  if(!bForcepc){

   window.location.href = "http://m.xxx.com/?ipad";

  }

 }

 if(bIsIphoneOs || bIsAndroid){

  var sUrl = location.href;

  if(!bForcepc){

   window.location.href = "http://m.xxx.com/?iphone";

  }

 }

 if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){

  var sUrl = location.href;

  if(!bForcepc){

   window.location.href = "http://m.xxx.com/";

  }

 }

}

function fGetQuery(name){//获取参数值

 var sUrl = window.location.search.substr(1);

 var r = sUrl.match(new RegExp("(^|&)" + name + "=([^&]*)(&|$)"));

 return (r == null ? null : unescape(r[2]));

}

function fShowVerBlock(){

 if(bForcepc){

  document.getElementById("dv_block").style.display = "block";

 }

 else{

  document.getElementById("ad_block").style.display = "block";

 }

}

fBrowserRedirect();

</script>