How to delete my email from facebook login page?

[♥♫NLT✿♪]

It doesn't work just to uncheck the "remember me" box. Whenever I go back to the facebook log in page, it will have my email already in the box. But I don't want it to do that. I already have my internet browser set so that it clears my history after I close my browser. What should I do?
I have firefox, by the way. I tried going to the options, but I don't see one that says "reset browser."

[Jim]

Internet Options - Reset Browser
This will clear ALL stored passwords but it is the only way

[Bon]

you cant delete it, i saw on on televisdion is their property.

[tiqhud]

your history but your email address is stored in a cookie.

[volleyball.lover]

Instead of just exiting out of facebook, log out before closing the webpage.