Customizing Toolbar

Hi you all

I am coding a GUI application python/matplotlib/basemap based on. I have imported NavigationToolbar as follows:

from matplotlib.backends.backend_gtk import NavigationToolbar2GTK as NavigationToolbar

This shows the following five buttons:

1.- Reset Original View
2.- Back to Previous View
3.- Forward to Next View
4.- Pan Axes
5.- Zoom to Rectangle
6.- Save the Figure

I am really interested on buttons number 1, 4, 5 and 6 only. Is it possible to suppress the other buttons from tha toolbar??? how??. The second issue is i would like to change toolbar tooltips from english to spanish which is my mother tonge...

I would like to know wether this customizing options are possible...
Thanks for your answers in advance....