// ==UserScript==
// @name           Gendou.com - Edit profile
// @namespace      http://loucypher.wordpress.com/
// @include        http://gendou.com/forum/edituser.php?name=*
// @include        http://gendou.com/forum/edituser.php
// @description    Password
// ==/UserScript==

document.getElementById("pass2").value = document.getElementById("pass").value;