function viewMap(mapid,x,y,z) {
  if (GBrowserIsCompatible()) {

	var map = new GMap2(mapid);
	map.addControl(new GLargeMapControl());
        map.addControl(new GMapTypeControl());
	map.setCenter(new GLatLng(x,y), z-1, G_SATELLITE_MAP);
        var point = new GLatLng(x,y);
        map.addOverlay(new GMarker(point));

	mapid.onclick=null;

  }
}