var http_request = false;

    function macheRequest(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 == 4) {
            if (http_request.status == 200) {
              
            } else {
                alert('Bei dem Request ist ein Problem aufgetreten.');
            }
        }
    }


function menge(id, todo) {
	if(todo == 'add') {
		document.getElementById(id).value = parseInt(document.getElementById(id).value)+1;
	}
	if(todo == 'del') {
		if(parseInt(document.getElementById(id).value)>0)
		document.getElementById(id).value = parseInt(document.getElementById(id).value)-1;
	}
}

function update_warenkorb(id) {
    	  var menge = document.getElementById('wein['+id+']').value;
		  macheRequest('index.php?action=weinshop&do=add&id=' + id + '&menge=' + menge);  
}

function redirect() {
	window.setTimeout("location.reload()",2000);	
}