How can i detect events and anything when i click the browsers back button?

How can i detect events and anything when i click the browsers back button?

hi jquery team,
How can i detect events and anything when i click the browsers back button?

i already use the "on before unload" and "unload" these all are the page unloading functions i am unable to find the event when browsers back button(arrow mark button) .....

Thanks Advance....