var http_request = false;

	function macheRequest(url,value,selected) {

		if(document.getElementById("popup"))
			document.getElementById("popup").innerHTML = "";

		http_request = false;
		if (window.XMLHttpRequest)
		{ // Mozilla, Safari,...
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType)
			{
				http_request.overrideMimeType('text/xml');
				// zu dieser Zeile siehe weiter unten
			}
		}
		else if (window.ActiveXObject)
		{ // IE
			try
			{
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e)
			{
				try {
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch (e)
				{}
			}
		}

		if (!http_request) {
			alert('Ende :( Kann keine XMLHTTP-Instanz erzeugen');
			return false;
		}


//		POST REQUEST
//		parameters = 'pid='+value;
// 		http_request.open('POST', url, true);
//   	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
//    	http_request.setRequestHeader("Content-length", parameters.length);
//     	http_request.setRequestHeader("Connection", "close");
//      http_request.send(parameters);

		http_request.onreadystatechange = alertInhalt;

		http_request.open('GET', url+'?pid='+value+'&selected='+selected, true);
		http_request.send(null);
	}


	function alertInhalt() {

		if (http_request.readyState == 4)
		{
			var answer = http_request.responseText;
			if(document.getElementById("popup").innerHTML != answer)
			{
				document.getElementById("popup").innerHTML = answer;
			}
			else
			{
				document.getElementById("popup").innerHTML = "";
			}
		}

		}