function info_close(){
    document.getElementById('info').innerHTML='';
}

  var request = false;
  var interpretElementID = null;
  // Request senden
	function setRequest(url,post_data,interpretElement) {
    interpretElementID = interpretElement;
		if (window.XMLHttpRequest) {
			request = new XMLHttpRequest();
		} else if (window.ActiveXObject) {
			try {
				request = new ActiveXObject('Msxml2.XMLHTTP');
			} catch (e) {
				try {
					request = new ActiveXObject('Microsoft.XMLHTTP');
				} catch (e) {}
			}
		}
		if (!request) {
			alert("Kann keine XMLHTTP-Instanz erzeugen");
			return false;
		} else {
			request.open('post', url, true);
			request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
			request.send(post_data);
			request.onreadystatechange = interpretRequest;
		}
	}

	function interpretRequest() {
		switch(request.readyState) {
			case 4:
				if(request.status != 200) {
					alert("Der Request wurde abgeschlossen, ist aber nicht OK\nFehler:"+request.status);
				}else{
					var content = request.responseText;
					if(content == "logout"){
				    location.href='admin.php';
          }else{
  					if(interpretElementID == "response"){
  				    document.getElementById(interpretElementID).style.display = "inline";
  				  }
            if(interpretElementID == "alert"){
  				    if(content != ""){
  				      alert(content);
  				    }
  					}else if(interpretElementID == null){
            }else{
  				    document.getElementById(interpretElementID).innerHTML = content;
  				  }
				  }
				}
				break;
			default:
				break;
		}
	}