function initialize() {
    if (GBrowserIsCompatible()) {
        if (gMapsParamArray.length == 3) {
            var latitudeValue = parseFloat(gMapsParamArray[0]);
            var longitudeValue = parseFloat(gMapsParamArray[1]);
            var zoomLevel = parseInt(gMapsParamArray[2]);

            gmap = new GMap2(document.getElementById("gmap"));
            gmap.setUIToDefault();
            // Set default map type and fill list of available maptypes
            gmap.removeMapType(G_SATELLITE_MAP);
            gmap.removeMapType(G_HYBRID_MAP);
            gmap.setMapType(G_PHYSICAL_MAP);
            gmap.setCenter(new GLatLng(latitudeValue, longitudeValue), zoomLevel);
            gmap.addControl(new GScaleControl())
            gmap.enableScrollWheelZoom();
            addPoints();
        }
    }
};