var debug = false;

function GetXmlHttp() {
  var xmlhttp = false;
  if (window.XMLHttpRequest)
  {
    xmlhttp = new XMLHttpRequest()
  }
  else if (window.ActiveXObject)
  {
    try
    {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP")
    } catch (e) {
      try
      {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP")
      } catch (E) {
        xmlhttp=false
      }
    }
  }
  return xmlhttp;
}

function PassAjaxResponseToFunction(url, callbackFunction, params)
{
  var xmlhttp = new GetXmlHttp();
  if (xmlhttp)
  {
    xmlhttp.onreadystatechange = 
            function ()
            {
              if (xmlhttp && xmlhttp.readyState==4)
              {
                if (xmlhttp.status==200)
                {
                  var response = xmlhttp.responseText;
                  var functionToCall = callbackFunction + 
                                 '(response,'+params+')';
                  if(debug)
                  {
                    alert(response);
                    alert(functionToCall);
                  }
                  eval(functionToCall);
                } else if(debug){
                  document.write(xmlhttp.responseText);
                }
              }
            }
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
  }
}