in reply to
OT: Preventing browser from remembering login form password
Most browsers come with features that allow them to remember passwords for users, and most have options to disable that feature. The specifics of turning it off vary from browser to browser.
(There is also some non-standard, proprietry HTML extension that lets the author disable the feature in some browsers. I don't know the syntax off the top of my head, and would discourange its use (since its (a) non-standard and (b) a choice that should be left in the hands of the user, not the author)).