Скрипт для добавления иконки на страницу PerfectMoney

// ==UserScript==
// @name           PM favicon
// @author         AVANdronov (src by tfr)
// @namespace      AVAndronov
// @include        https://perfectmoney.is*
// @version        1.0
// @grant          none
// ==/UserScript==x
 
// *** Einstellungen / Settings ***
// * Favicon URL *
var favicurl = "data:image/x-icon;base64,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";
// * Favicon-Dateityp / Favicon file type *
var favictyp = "image/x-icon";
// * Favicon ueberschreiben, falls vorhanden / Overwrite favicon, if one is set *
var overwrite = true;
// *** Ende der Einstellungen / End of settings ***
 
var iconset = false;
for (var i = 0; i < window.document.getElementsByTagName('link').length; i++) {
    if (window.document.getElementsByTagName('link')[i].rel == "icon" || window.document.getElementsByTagName('link')[i].rel == "shortcut icon") {
        iconset = true;
        if (overwrite) {
            window.document.getElementsByTagName('link')[i].parentNode.removeChild(window.document.getElementsByTagName('link')[i]);
            iconset = false;
        }
    }
}
if (!iconset) {
    var favicon = window.document.createElement('link');
    favicon.rel = "shortcut icon";
    favicon.type = favictyp;
    favicon.href = favicurl;
    window.document.getElementsByTagName('head')[0].appendChild(favicon);
}