var req;

function loadXMLDoc(url,data)
{
	if (window.XMLHttpRequest)
	{
		req = new XMLHttpRequest();
		req.onreadystatechange = processReqChange;
		req.open("POST", url, true);
		req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		req.send(data);
	}
	else if (window.ActiveXObject)
	{
		isIE = true;
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req)
		{
			req.onreadystatechange = processReqChange;
			req.open("POST", url, true);
			req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
			req.send(data);
		}
	}
	else
	{
		alert('Der Browser unterstuetzt diese Aktion nicht')
	}
}

function processReqChange()
{
	// only if req shows "loaded"
	if (req.readyState == 4)
	{
		// only if "OK"
		if (req.status == 200)
		{
			executeReqChange();
		}
		else
		{
			alert("There was a problem retrieving the XML data:\n" + req.statusText);
		}
	}
}

function getContent()
{
	document.getElementById('divContent').innerHTML = '';
	document.getElementById('divContent').innerHTML = req.responseText;
}