Changing the default smileys
// ==UserScript==
// @name Kek smileys
// @namespace KPI
// @version 1.1
// @description Changing the default smileys
// @run-at document-idle
// @require https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js
// @include https://www.facebook.com/*
// @include http://www.facebook.com/*
// @grant none
// @copyright 2016+, John
// ==/UserScript==
$("body").on("DOMSubtreeModified", function(){
$('.userContentWrapper .UFILikeLink._48-k').one('mouseenter',function(){
setTimeout(function() {
$('._iuz').css("backgroundImage", "url(//i.imgur.com/YGvQ01i.png)" );
}, 600);
});
});