网站自动识别移动端访问并跳转

<script type="text/javascript">
 // borwserRedirect
 (function browserRedirect(){
  var sUserAgent = navigator.userAgent.toLowerCase();
  var bIsIpad = sUserAgent.match(/ipad/i) == 'ipad';
  var bIsIphone = 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) == 'web';
  var bIsCE = sUserAgent.match(/windows ce/i) == 'windows ce';
  var bIsWM = sUserAgent.match(/windows mobile/i) == 'windows mobile';
  var bIsAndroid = sUserAgent.match(/android/i) == 'android';
  if(bIsIpad || bIsIphone || bIsMidp || bIsUc7 || bIsUc || bIsCE || bIsWM || bIsAndroid ){
  window.location.href = 'http://www.abc.com/wap/';
  }
 })();
 </script>
<script type="text/javascript"> 
<!-- 
  //平台、设备和操作系统 
  var system = { 
   win: false, 
   mac: false, 
   xll: false, 
   ipad:false
  }; 
  //检测平台 
  var p = navigator.platform; 
  system.win = p.indexOf("Win") == 0; 
  system.mac = p.indexOf("Mac") == 0; 
  system.x11 = (p == "X11") || (p.indexOf("Linux") == 0); 
  system.ipad = (navigator.userAgent.match(/iPad/i) != null)?true:false; 
  //跳转语句，如果是手机访问就自动跳转到wap.baidu.com页面 
  if (system.win || system.mac || system.xll||system.ipad) { 
  } else { 
   window.location.href = "http://www.abc.com/wap/"; 
  } 
--> 
</script>