function getXMLHttp()
{
  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("Your browser does not support AJAX!")
        return false;
      }
    }
  }
  return xmlHttp;
}

function MakeRequest()
{
  var xmlHttp = getXMLHttp();
 
  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4)
    {
      HandleResponse(xmlHttp.responseText);
    }
  }

  xmlHttp.open("GET", "fnc/ajax.php", true);
  xmlHttp.send(null);
}
function HandleResponse(response)
{
  document.getElementById('ResponseDiv').innerHTML = response;
}
var url = "fnc/ajax.php?sum1="; // The server-side script 
       function handleHttpResponse5() {    
        if (http.readyState == 4) { 
              if(http.status==200) { 
                  var results=http.responseText; 
              document.getElementById('ResponseDiv').innerHTML = results; 
              } 
              } 
        } 
        
        function requestCustomerInfo() {      
            var sId = document.getElementById("sum1").value; 
			var sum2 = document.getElementById("sum2").value;
            http.open("GET", url + (sId) + '&sum2=' + (sum2), true); 
            http.onreadystatechange = handleHttpResponse5; 
            http.send(null); 
        }