var http_request = false;
function load_url(url) {
	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;
	}
	http_request.onreadystatechange = alertInhalt;
	http_request.open('GET', url, true);
	http_request.send(null);

}

function alertInhalt() {
	if (http_request.readyState == 1) {
		document.getElementById("inhalt").innerHTML = '<p style="padding:2px;text-align:center"><img src="http://www.gourmet-report.de/images/pleasewait.gif" alt="ladezeit" /></p>';
	}
	if (http_request.readyState == 4) {
		 var answer = http_request.responseText;
		  //var answer = http_request.responseText;
		  if(document.getElementById("inhalt").innerHTML != answer){
			document.getElementById("inhalt").innerHTML = answer;
		  }
		  else{
			document.getElementById("inhalt").innerHTML = "";
		  }
	}

}