I don't use cookie to store user name and its password for next time use. What I want is that user must enter his user name and password each time when he want log in. But in IE browser, you can click the input area and it will show the previously entered user name and ******* password with a selection lists. So user acturally don't need to enter his user name and password each time. It is convenient for the same user, but is alse dangerous if other person may use the same computer and can log in without knowing the required user name and password. Lots of web base email service site like netscape web mail has this situation.

Does that make sense? Thanks for your help