function getRequestObject() {
			var ro;
			if(window.XMLHttpRequest){
				try {
					ro = new XMLHttpRequest();
				}
				catch(e) {
					ro = null;
				}
			}else{
				try {
					ro = new ActiveXObjext("Msxml2.XmlHttp");
				}
				catch(e) {
					try {
						ro = new ActiveXObject("Microsoft.XMLHTTP");
					}
					catch(e) {
						ro = null;
					}
				}
			}
			if(ro == null) {
				alert('Ihr Browser unterstützt leider kein AJAX');
			}
			return ro;
		}