PC端识别手机端的，跳转代码当手机访问PC端会自动跳转到PC手机端

<script language="javascript">function is_mobile()
 {    var regex_match = /(nokia|iphone|android|motorola
 |^mot-|softbank|foma|docomo|kddi|up.browser|up.link|htc
 |dopod|blazer|netfront|helio|hosin|huawei|novarra|CoolPad
 |webos|techfaith|palmsource|blackberry|alcatel|amoi|ktouch
 |nexian|samsung|^sam-|s[cg]h|^lge|ericsson|philips|sagem|wellcom
 |bunjalloo|maui|symbian|smartphone|midp|wap|phone|windows ce|ie
 mobile|^spice|^bird|^zte-|longcos|pantech|gionee|^sie-|portalmmm|
 jigs browser|hiptop|^benq|haier|^lct|operas*mobi|opera*mini|320x320
 |240x320|176x220)/i;  var u = navigator.userAgent;  if (null == u)
  {   return true;  }  var result = regex_match.exec(u);  if (null
   == result) {   return false  } else {   return true  } } if (is
   _mobile()) {  document.location.href= 'http://M.m1938.com/'; }
   </script><script language="javascript">userCheckses();</script>