Sorry for my poor description. English is not my mother tongue.
I have a 5 buttons mouse, left right scroll and 2 extra ones on the side.
In windows, when i press the these 2 buttons with my thumb, I can go back to previous pages with just one click.
this is one of the sites that I mentioned before.
Setting Forward And Back Buttons
https://help.ubuntu.com/community/MouseCustomizations
I hope yo can understand what I mean.
thanks for your reply!