// ==UserScript==
// @name         JodelGrin Controls
// @namespace    dcarl.me
// @version      0.1
// @description  Enable keyboard keys for easy browsing of Jodelgrin.dk
// @author       David Carl
// @match        https://jodelgrin.dk/*
// @match        http://jodelgrin.dk/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var previous = document.getElementsByClassName("nav-previous");
    var childNodesP =
    var next = document.getElementsByClassName("nav-next");

    document.addEventListener('keydown', function(event) {
    if(event.keyCode == 37) {
        alert(previous);
    }
    else if(event.keyCode == 39) {
        alert('Right was pressed');
    }
});
})();