how to change url at address bar without reloading the page

Question

I have http://mysite.com/index.php.

And a sub menu

• home => http://mysite.com/index.php
• about us => http://mysite.com/about.us.php
• pro

Answer 1

you can't change the URL in the address bar without changing the page because to be able to do that I couldlet you visit me at http://www.imhackingyou.com/sucker but change the addressbar to read http://www.bankofamerica.com/login