How to make asterisks (***) appear in password fields?

Hi everyone...

Can someone please tell me how to make a password appear as asterisks(****) when filling out an html form? The form asks for a wealth of information (i.e. name, address, etc. which is all regular type) and is then submitted to an email address. When filling out the html form I only need the "password" section of the form to show up as asterisks when a user is typing in his/her password.Then the password needs to be "readable" in the email so it can be input for access to password protected pages.

Thanks in advance,

Mark