var WINDOW_HTML = '<div><strong>Waterlelie </strong><br  />Oude streek 74<br  />9354 AD Groningen</div>'
    var ADDRESS = "Oude streek 74, 9354 AD, Groningen, Nederland";
    var ZOOM = 14;
    var HTML_ELEMENT_ID = 'map'
    // used for debugging, if you dont need this, remove this code!
    if (document.getElementById(HTML_ELEMENT_ID) == 'null') {
        alert('Google Maps Error:\n\rEr is geen HTML element met ID: "' + HTML_ELEMENT_ID +'"');
    }
    // end used for debugging!
    function geocodeAddress(address) {
        var geocoder = new GClientGeocoder();
        geocoder.getLatLng(address,
        function(point) {
            if (!point) {
                alert('Google Maps Error:\n\rAdres: "' + address + " niet gevonden!");
            } else {
                if (GBrowserIsCompatible()) {
                    var map = new GMap2(document.getElementById(HTML_ELEMENT_ID));
                    map.addControl(new GLargeMapControl());
                    map.addControl(new GMapTypeControl());
                    map.setCenter(point, ZOOM);
                    var marker = new GMarker(point);
                    map.addOverlay(marker);
                    GEvent.addListener(marker, "click", function() {
                        marker.openInfoWindowHtml(WINDOW_HTML);
                    });
                    marker.openInfoWindowHtml(WINDOW_HTML);
                }
            }
        }
        );
    }
    window.onload = geocodeAddress(ADDRESS)