Guarda qui, ti dice come personalizzare i controllers. Purtroppo al momento nn ho un'apikey valida per testare.
http://code.google.com/intl/it/apis/.../controls.html
The behavior of setUIToDefault() differs slightly based on the size of the map. Larger maps use the standard complement of controls, while smaller maps use a subset of smaller controls. These differences are shown below:
Edit: perfetto, ciao.