Use arrow right or left to go to next or previous chapter.
// ==UserScript==
// @name Gunnerkrigg Court Arrow Navigation
// @author EleventhEric
// @namespace EleventhEric
// @description Use arrow right or left to go to next or previous chapter.
// @include *://www.gunnerkrigg.com/*
// @version 1.0
// @grant none
// @require http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// ==/UserScript==
//Note: this site uses duplicate class names for "right" and "left" so I had to hard code the correct ones for going to the next or previous comic
$(document).keydown(function(e){
// PREV CHAPTER - Left Arrow
if (e.keyCode == 37) {document.getElementsByClassName('left')[6].click();}
// NEXT CHAPTER - Right Arrow
else if (e.keyCode == 39) {document.getElementsByClassName('right')[2].click();}
});