Okoun set images max height

okoun_set_max_height.user.js

// ==UserScript==
// @name         Okoun set images max height
// @namespace    https://moltools.sourceforge.net/lopuch/?n=Main.Okoun
// @version      1.0
// @author       huhlal
// @match        https://www.okoun.cz/boards/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=okoun.cz
// @grant        none
// ==/UserScript==

const maxHeight = '70vh'; // 70 % of browser window height

(function() {
    'use strict';
    const imgs = document.getElementsByTagName('img')
    for (const img of imgs) {
        img.style.width = 'auto'
        img.style.maxHeight = maxHeight
    }
})();