Fremde Sprachen auf Mozilla Addon-Seite übersetzen?

////  ContextTranslate DeepL ////
///https://github.com/ardiman/userChrome.js/tree/master/contexttranslate///
// ex ContextTranslate.uc.js///
// modifiziert by universum 123///

(function () {
    if (location != AppConstants.BROWSER_CHROME_URL)
        return;
    let translate = function () {
        let browserMM = gBrowser.selectedBrowser.messageManager;
        browserMM.addMessageListener('getSelection', function listener(message) {
            let t = (message.data !== '');
            let e = (document.charset || document.characterSet);
            if (t) {
                openWebLinkIn('https://www.deepl.com/translator#en/de/' + encodeURIComponent(message.data), 'tab');
            } else {
                openWebLinkIn('https://www.deepl.com/translate?u=' + encodeURIComponent(gBrowser.currentURI.spec) + '&hl=de-DE&ie=' + e + '&sl=auto&tl=de-DE', 'tab');
            };
            browserMM.removeMessageListener('getSelection', listener, true);
        });
        browserMM.loadFrameScript('data:,sendAsyncMessage("getSelection", content.document.getSelection().toString())', true);
    }
    let menuitem = document.createXULElement('menuitem');
    menuitem.id = 'context-googletranslate';
    menuitem.setAttribute('label', 'Übersetzen');
    menuitem.setAttribute('tooltiptext', 'Mit DeeplTranslate übersetzen');
    menuitem.setAttribute('oncommand', '(' + translate.toString() + ')()');
    menuitem.classList.add('menuitem-iconic');
    //Wer kein Icon möchte kann die nächsten beiden Zeilen auskommentieren/löschen
    menuitem.style.listStyleImage = 'url("https://www.deepl.com/favicon.ico")';
    menuitem.style.listStyleImage = ' url("data:image/png;base64,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")';
    let refItem = document.getElementById('context-inspect');
    refItem.parentNode.insertBefore(menuitem, refItem);
})();