out/maps/" target="_blank">&copy; Mapbox &copy; OpenStreetMap</a> | <a href="https://www.mapbox.com/map-feedback/" target="_blank">Improve this map</a>',
        minZoom: 5
    });

    // define left-aligned and right-aligned labels and icons
    var labelBaseOptions = {
        iconUrl: '/img/lab_marker_home.png',
        shadowUrl: null,
        iconSize: new L.Point(21, 35),
        iconAnchor: new L.Point(0, 0),
        labelAnchor: new L.Point(25, 2),
        wrapperAnchor: new L.Point(10, 35)
    };
