// AJAX
function getXMLHTTP() {
  var result = false;
  if( typeof XMLHttpRequest != "undefined" ) {
    result = new XMLHttpRequest();
  } else {
    try {
        result = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
        try {
            result = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (ie) {}
    }
  }
  if (typeof netscape != 'undefined' && typeof netscape.security !=
      'undefined') {
      try {
          netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead');
      }
      catch (e) {
      }
  }
	return result;
}

// Kalender aktualisieren
function calupdate(ts){
  var timestamp = new Date().getTime();
	xmlget = getXMLHTTP();
	xmlget.open("GET", "mod/ajax_kalender.php?ts="+ts+"&tmp="+timestamp);
	xmlget.onreadystatechange = function(){
		if ( xmlget.readyState == 4 && xmlget.responseText) {
          if( document.getElementById("kalender").innerHTML != xmlget.responseText){

   				if(document.getElementById("kalender").innerHTML != xmlget.responseText)
   				{
   					document.getElementById("kalender").innerHTML = xmlget.responseText;
   				}
				}
		}
	}
  xmlget.send(null);
	return true;
}


function showEvent(id)
{
  //$('#event'+id).show();
  document.getElementById("event"+id).style.display="block";
}

function hideEvent(id)
{
  //$('#event'+id).hide();
  document.getElementById("event"+id).style.display="none";
}

function showForm(id1, id2)
{
    document.getElementById(id1).style.visibility = "visible";
    document.getElementById(id1).style.display = "block";
    document.getElementById(id2).style.display = "none";
}