var xmlHttp;
 var rootpath;
  
 rootpath = "/ajax/";   // be sure to change this to your URL
  
 function getemail(str)
 {
     var url=rootpath + "emailLookup.asp?email=" + str
    
     xmlHttp=GetXmlHttpObject(emailchanged)
     xmlHttp.open("GET", url , true)
     xmlHttp.send(null)
 }
  
 function emailchanged()
 {
 
     if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
     {
        document.getElementById("emailmsg").innerHTML=xmlHttp.responseText
    
     }
 }
  
  function fillemail(str) {
     var theform = document.getElementById("form1");
     theform.emailmsg.value = str;
 }

 function GetXmlHttpObject(handler)
 {
     var objXmlHttp=null
  
     if (navigator.userAgent.indexOf("Opera")>=0)
     {
         alert("Opera not supported...")
         return;
     }
     if (navigator.userAgent.indexOf("MSIE")>=0)
     {
         var strName="Msxml2.XMLHTTP"
         if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
         {
             strName="Microsoft.XMLHTTP"
         }
         try
         {
             objXmlHttp=new ActiveXObject(strName)
             objXmlHttp.onreadystatechange=handler
             return objXmlHttp
         }
         catch(e)
         {
             alert("Error. Scripting for ActiveX might be disabled")
             return
         }
     }
     if (navigator.userAgent.indexOf("Mozilla")>=0)
     {
         objXmlHttp=new XMLHttpRequest()
         objXmlHttp.onload=handler
         objXmlHttp.onerror=handler
         return objXmlHttp
     }
 }