def register(): register_map_engine(OpenLayersMapEngine)
def register(): register_map_engine(GoogleMapEngine)
def register(): register_map_engine(GoogleMapEngine)
def register(): register_map_engine(YahooMapEngine)
def register(): register_map_engine(BingMapEngine)
def register(): register_map_engine(BingMapEngine)
def register(): register_map_engine(YahooMapEngine)