Prevent the back action after logout??????

Prevent the back action after logout??????

Hi Friends, After logout if i pressed back button in browser ,it should not show the previous page , it has to go to default page(login page only).

So i have tried in many ways(ruby on rails application) like "history.forward()" ,"onbeforeunload",expire cache in meta tag,"http://www.brookebryan.com/ back button detection"so many .. i have confused a lot

Is there any way is there in jquery