});
panel.add(toggleStreetview);
final Label changeLabel = new Label();
panel.add(changeLabel);
initWidget(panel);
svOverlay = new StreetviewOverlay();
svOverlay.addStreetviewOverlayChangedHandler(new StreetviewOverlayChangedHandler() {
public void onChanged(StreetviewOverlayChangedEvent event) {
changeLabel.setText("Last Changed: " + new Date());
}