//Auswertung des Requests
function responseAHAH(errorMessage, callTarget) {
	if(req.readyState == 4) {
		if(req.status == 200) {
			output = req.responseText;
			part1 = callTarget.className.split(" ")[0]+" "+output;
			callTarget.style.display = output;
			req.abort();
			req = null;
		} else {
			alert("errorMessage: "+errorMessage+"n"+responseText);
		}
	}
}

//Der eigentliche Request
function callOC(url, callTarget, errorMessage) {
	
	try {
		req = new XMLHttpRequest();
		/* e.g. Firefox */
	} catch(e) {
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP");
			/* some versions IE */
		} catch (e) {
			try {
				req = new ActiveXObject("Microsoft.XMLHTTP");
				/* some versions IE */
			} catch (E) {
				req = false;
			}
		}
	}
	req.onreadystatechange = function() {
		return responseAHAH(errorMessage, callTarget);
	};
	req.open("GET",url,true);
	req.send(null);
}