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function AjaxFunction()
 {
 var xmlHttp;
 
 try
    {
   // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
 catch (e)
    {
  // Internet Explorer
   try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
   catch (e)
      {
      try
         {
         xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
         }
      catch (e)
         {
         alert("ÄúµÄä¯ÀÀÆ÷²»Ö§³ÖAjax£¡");
         return false;
         }
      }
    }
 }
</script>


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