function initialize()
{
    if (GBrowserIsCompatible())
    {
        gmap = new GMap2(document.getElementById("gmap"));
        gmap.setMapType(G_PHYSICAL_MAP);
        gmap.setCenter(new GLatLng(50.843454, 4.363632), 8);
        gmap.addControl(new GSmallZoomControl());
        gmap.enableScrollWheelZoom();
        addPoints();
    }
};