var xmlHttp

function chk_id(str)
{ 
      uname=document.getElementById(str).value;
     // alert(str);
      if (uname=="Your email address")
      {
          uname = "";  
      }
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null)
      {
      alert ("Your browser does not support AJAX!");
      return;
      }
    xmlHttp.onreadystatechange=toggleDiv;
    //if (uname != "")
    //{
    url="DispUser.aspx"+"?EId="+uname;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
    //}
}

function toggleDiv(){

    if (xmlHttp.readyState==4)
    {
       
        var xmlDoc=xmlHttp.responseXML.documentElement;
        
        var f_msg = xmlDoc.getElementsByTagName("subject")[0].childNodes[0].nodeValue;
        if(f_msg == "Not")
        {
            if(document.getElementById("correct").style.display == 'none'){
                document.getElementById("sorry").style.display = 'none';
                document.getElementById("error").style.display = 'none';
                document.getElementById("correct").style.display = 'block';
            }
        }
        else if (f_msg == "Avail")
        {
            if(document.getElementById("sorry").style.display == 'none'){
                document.getElementById("correct").style.display = 'none';
                document.getElementById("error").style.display = 'none';
                document.getElementById("sorry").style.display = 'block';
            }
        }
        else if (f_msg == "NoUser")
        {
       // alert("HIi");
            if(document.getElementById("error").style.display == 'none'){
                document.getElementById("correct").style.display = 'none';
                document.getElementById("sorry").style.display = 'none';
                document.getElementById("error").style.display = 'block';
            }
        }
//        document.getElementById(subj).innerHTML=xmlDoc.getElementsByTagName("subject")[0].childNodes[0].nodeValue;
//        document.getElementById(frm).innerHTML=xmlDoc.getElementsByTagName("from")[0].childNodes[0].nodeValue;
//        document.getElementById(dt).innerHTML=xmlDoc.getElementsByTagName("dt")[0].childNodes[0].nodeValue;
//        document.getElementById(message).innerHTML=xmlDoc.getElementsByTagName("shortdescription")[0].childNodes[0].nodeValue;
//        document.getElementById(fmessage).innerHTML=f_msg;
        //alert(document.getElementById(subj).innerHTML);
    }
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}