Image Hider

// ==UserScript==
// @name         Image Hider
// @namespace    https://foxscotch.us/
// @version      1
// @description  Hides images on the forum
// @author       You
// @match        https://forum.blockland.us/index.php*
// @grant        none
// ==/UserScript==
/* jshint -W097 */
'use strict';

// Change this to true if you want to hide images in signatures too
var includeSignatures = false;

var images = [];

if (window.location.search.startsWith('?action=pm')) {
    images = images.concat(Array.prototype.slice.call(document.querySelectorAll('.personalmessage img')));
    if (includeSignatures) {
        images = images.concat(Array.prototype.slice.call(document.querySelectorAll('.signature img')));
    }
}
else if (window.location.search.startsWith('?topic=')) {
    images = images.concat(Array.prototype.slice.call(document.querySelectorAll('.post img')));
}

function hideImage(img, btn) {
    if (img.hidden) {
        img.hidden = false;
        btn.value = 'Hide';
    }
    else {
        img.hidden = true;
        btn.value = 'Show';
    }
}

function addButtons() {
    for (var i = 0; i < images.length; i++) {
        images[i].hidden = true;

        var btn = document.createElement('input');
        btn.type = 'button';
        btn.value = 'Show';
        btn.style.display = 'block';

        btn.addEventListener('click', hideImage.bind(null, images[i], btn));

        images[i].parentElement.insertBefore(btn, images[i]);
    }
}

addButtons();