Here’s a little line of javascript that will work in Firefox to reveal the * characters in an auto populated password field. Just paste the following code into your browser address bar whenever you see an asterisked form field and press enter..

 javascript:var els = document.getElementsByTagName('input'); for(var x=0; x<els.length; x++){ if(els[x].type.toLowerCase() == 'password' ){ var test = els[x].type = 'text';}} 

Useful if if you want to access your sisters email account you forget a password that gets auto filled.