History button. Go back 2

How do I make a web browsers button go back 2 steps instead of just 1? This would be fantastic if anyone could help.

Thanks.

onClick=“history.go(-2)” (for a form button)

“javascript:history.back(2)” (for a ahref)

“javascript:history.go(-2)” (also try it this way)

I think that will do it. Post is it does not. I have not tried it with “2” in the () but it may work.