// ==UserScript==
// @name        chan capswag
// @namespace   openchan.org
// @include     http://openchan.org/board/mod.php?/test/*
// @version     1
// @grant       none
// ==/UserScript==

var nameInputCapcode = "Acebulf is the best!";
var curInput = document.getElementsByName("name")[0].value;

document.getElementsByName("name")[0].value = curInput + " ## " + nameInputCapcode;