final MapWidget map = new MapWidget(center, 1);
map.setSize("300px", "300px");
Marker m = new Marker(center);
map.addOverlay(m);
RootPanel.get().add(map);
MapBlowupContent content = new MapBlowupContent(
MapType.getSatelliteMap(), 3);
m.showMapBlowup(content);
}
});
}