Here is the whole code.
// ==UserScript==
// @name Nitto Legends Forum Signature
// @namespace Nitto Legends Forum Signature
// @description No longer will you have to copypasta your forum signature!
// @include
http://nittolegends.com/community/newreply.php?*
// @include
http://nittolegends.com/community/newthread.php?*
// @version 1
// @grant none
// ==/UserScript==
window.onload = function(){
var signature = "sig goes here";
var current = document.getElementById('vB_Editor_001_textarea'). value;
document.getElementById('vB_Editor_001_textarea'). value = current+"\n\n\n"+signature;
}
Nitto Legends Forum Signature. - powered by Greasemonkey