Greasy Fork is available in English.
Adds scrolling with J/K
// ==UserScript==
// @name VK J/K
// @icon http://vk.com/images/safari_60.png
// @namespace x4_vkjk
// @version 0.4
// @description Adds scrolling with J/K
// @author x4fab
// @match https://vk.com/*
// @grant none
// ==/UserScript==
document.body.addEventListener('keydown', function (e){
if (!/^(INPUT|TEXTAREA|SELECT)$/.test(e.target.tagName) && e.target.contentEditable != 'true' && (e.keyCode == 74 || e.keyCode == 75)){
document.body.scrollTop += [].map.call(document.querySelectorAll('body, .post'), function (a){
return a.getBoundingClientRect().top;
}).filter(function (a){
return e.keyCode == 74 ? a > 10 : a < -10;
}).sort(function (a, b){
return e.keyCode == 74 ? a - b : b - a;
})[0];
}
}, false);