var ajaxRequestObj = false;
var ajaxResponse = '';

function ajaxCallUrl(pUrl, pSendStr, pHandler, pMethod) {
  if (pMethod == undefined) pMethod = 'POST';
  
  ajaxRequestObj = false;

  if (window.XMLHttpRequest) {
    ajaxRequestObj = new XMLHttpRequest();
    if (ajaxRequestObj.overrideMimeType) ajaxRequestObj.overrideMimeType('text/html');
  }
  else if (window.ActiveXObject) {
    try {
      ajaxRequestObj = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        ajaxRequestObj = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {}
    }
  }

  if (!ajaxRequestObj) return false;

  if (pHandler != 'nichts') {
	ajaxRequestObj.onreadystatechange = pHandler;
  }
  ajaxRequestObj.open(pMethod, pUrl, true);
  ajaxRequestObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  ajaxRequestObj.send(pSendStr);
}
function ajaxSucceeded() {
  if ((ajaxRequestObj.readyState == 4) && (ajaxRequestObj.status == 200)) {
    ajaxResponse = ajaxRequestObj.responseText;
    return true;
  }
  else {
    ajaxResponse = '';
    return false;
  }
}

// Session refresh, damit die Sitzung erhalten bleibt, so lange der Browser geöffnet ist.

function aktualisiereSitzung() {
	//alert('geht');
	ajaxCallUrl('sessDummy.php', '', SessAusgabeTest, 'GET');
}

function SessAusgabeTest() {
	//alert('test');
	if (ajaxSucceeded()) {
		//document.getElementById('msg-text').innerHTML = ajaxResponse;
	}
}
var aktiv = window.setInterval("aktualisiereSitzung()", 60000);