function show_trip(){
    if ( GBrowserIsCompatible() ) {
        var trip_map = new GMap2(document.getElementById("trip_map"), { size: new GSize(440, 300) });
        trip_map.setMapType(G_NORMAL_MAP);

        var dir_map = new GDirections(trip_map);
            dir_map.loadFromWaypoints(arguments);       
    }
}