If I open a firefox browser and then I were to open another tab (e-mail for example) which is a password protected website, and then I sign out of my e-mail in the tab and close that tab, I can still access my e-mail without having to re-enter a password by going back to the e-mail website from the brower that is still open. ex. If I open google and am looking at something so I open another tab to go to hotmail. I then sign out of my hotmail and go back to the google site. If I then go to hotmail from the google site, even though I have signed out it will take me back into my e-mail unless I have closed all tabs upon signing out. Is there a way to make it so that if you sign out in one tab it completely signs you out?