I remember seeing a way to have an such that the browser will not prompt the user to save the password. But I
I've found the following works on Firefox and Chrome.
All of these are within the forms section. "person" and "mypswd" are what you want, but the browser will save "userid" and "passwd" once, and never again since they don't change. You could eliminate the "person" field if you don't really need it. In that case, all you want is the "mypswd" field, which could change in some way known to the user of your web-page.