I'm using lighttpd authentication module.
Normally webpage pops out a window, asking for username and password. In my case, there's only one username and it is fixed.
So is there a way to remove the username text field in the popup login window, leave only the password field ?
Don't ask me why we're doing this.
Lighthttpd auth module uses HTTP authentication, described in RFC 2617. Here is how it works:
You can not affect the way browser asks user for credentials. So, the answer to you question is no.
You may use custom auth (not http based, but html-form based) for this task. But I am not sure if lighthttpd suppors it. You may need do some server-side programming for that