Reveal *****(Asterisk) Passwords Using Javascript..!!!

Want to Reveal the Passwords Hidden Behind Asterisk (****) ?
Follow the
steps given below-
1) Open the Login Page of any
website. (eg. http://mail.yahoo.com)
2) Type your
'Username' and 'Password'.
3) Copy and paste the
JavaScript code given below into your browser's address bar and press
'Enter'.

javascript:
alert(document.getElementById('Passwd').value);

4) As soon as you press 'Enter', A window pops up
showing Password typed by you..!
Note :- This trick
may not be working with firefox.