// ==UserScript==
// @name zbiornikowiec
// @namespace http://userscripts.org/users/xD
// @include http://pl.zbiornik.com/photo/*
// @version 1
// @grant none
// ==/UserScript==
(function () {
    var regex = /\((.+?)\)/;
    var linkUrl = regex.exec(document.getElementById("oooo").getElementsByTagName("div")[2].style.background);
    var link = document.createElement("a");
    link.download = "jpg";
    link.href = linkUrl[1];
    link.innerHTML = "<b>Pobierz</b>";
    var elem = document.getElementsByTagName("table")[2];
    elem.appendChild(link);
}());