function load_url(url,postvars,id) {
	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 =  	http_request.onreadystatechange = function ()
  {
    alertInhalt(id);
  }
	http_request.open('POST', url, true);
	http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=iso-8859-1");
	http_request.send(postvars);

}

function alertInhalt(id) {
	if (http_request.readyState == 1) {
		document.getElementById(id).innerHTML = 'Bitte warten...';
	}
	if (http_request.readyState == 4) {
		 var answer = http_request.responseText;
		  if(document.getElementById(id).innerHTML != answer){
			document.getElementById(id).innerHTML = answer;
		  }
	}
}