function initialize(lat, lng, zoom) {

    if (GBrowserIsCompatible()) {

        var coord = new GLatLng(lat, lng);
        
        var map = new GMap2(document.getElementById("map_canvas"));
        map.setCenter(new GLatLng(lat, lng), zoom);

        map.addControl(new GMapTypeControl());
        map.addControl(new GSmallMapControl());
       
        theMarker = new GMarker(coord);

        map.addOverlay(theMarker);

    }
}