var xmlHttp = false; try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");} catch(e) { try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) { xmlHttp = false; }}if (!xmlHttp && typeof XMLHttpRequest != 'undefined') { xmlHttp = new XMLHttpRequest();}function showCal(monat){ if (xmlHttp) { xmlHttp.open('GET', '/modules/kalender.php?cal=' + monat, true); xmlHttp.onreadystatechange = function () { if (xmlHttp.readyState == 4) { document.getElementById("kalenderBox").innerHTML = xmlHttp.responseText; } }; xmlHttp.send(null); }}