var XMLHttp = getXMLHttp();

function loadData() {
  var sgid = document.getElementById("gid").value;  
  var sfolder = document.getElementById("folder").value;
  var spid = document.getElementById("pid").value;
  
  XMLHttp.open('GET', 'http://www.casualgamesdl.com/delay.php?gid='+sgid+'&folder='+sfolder+'&pid='+spid+'&rand='+Math.random(), true);

  XMLHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  XMLHttp.setRequestHeader("Accept-Charset", "UTF-8");
  XMLHttp.onreadystatechange = handlerFunction;
  XMLHttp.send(null);
  document.getElementById("loading").style.visibility = "visible";
}

function handlerFunction() {
  if (XMLHttp.readyState == 4) {
    document.getElementById("loading").style.visibility = "hidden";
    document.getElementById("output").innerHTML = XMLHttp.responseText;
  }
}

function getXMLHttp() {
  if (window.XMLHttpRequest) {
    try {
      XMLHttp = new XMLHttpRequest();
    } catch (e) { }
  } else if (window.ActiveXObject) {
    try {
      XMLHttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        XMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) { }
    }
  }
  return XMLHttp;
}