addEventListener('dblclick', (e)=> {
  var img = e.originalTarget.tagName.toLowerCase() == "img";
  var win = e.originalTarget.ownerDocument.defaultView;
    if (img && e.button == 2 && win.top == content) {
    e.preventDefault();
    e.stopPropagation();
    document.getElementById("contentAreaContextMenu").hidePopup();
    var imgLink = e.originalTarget.src;
    if (imgLink && e.originalTarget.parentNode.tagName.toLowerCase() == "a"
       && e.originalTarget.parentNode.href.match(/\.(jpg|jpeg|png|gif|apng|webp)$/)) {
      imgLink = e.originalTarget.parentNode.href;
    }
    gClipboard.write(imgLink);
    custombuttons.alertSlide('Ссылка на изображение скопирована', imgLink);
  }
}, false, gBrowser);

Services.search.init(() => {
    var data = {
        "Google SiteSearch": {
            url: "https://encrypted.google.com/search?hl=ru&q={searchTerms}&ie=utf-8&oe=utf-8",
            description: "Поиск по сайту в Google",
            icon: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABLklEQVQ4jZ3Tv6uCUBQHcP+9+psuejEXCaTZQBzMTXAxEQI3QdJBFAchKJKCTFrSRfD7pnd58QTN4Qzn3ns+nPuL43l+QSm9UUrxZdx4nl9wM4sZwg1NiKII13XheR7O5zP6vkcYhjAM49/aQSAIAniex7Dr9Yosywa7GATatoVlWSy3bRtd100HmqZBFEUs13Udj8djOuA4Drquw263gyzLOB6P2G630wFKKVRVxX6/B4CP7UwGKKVYrVZo2xaXywXr9Xo6YJomuwnf9/F+v/F8PqEoyjhwOBxwOp0gSRIbUxQFVVUhjuNxoK5r9gb+huu6SJJkHMjzHFVVYbPZfJxFURTQNG0ckGUZQRDg9XqhLEukaYo4jgeLf4HZn0kQhDtHCFkKgnCfAZSEkOUP0IqsHeSvVqEAAAAASUVORK5CYII="
        },
        "DuckDuckGo SiteSearch": {
            url: "https://duckduckgo.com/?kp=-1&kak=-1&kad=ru_RU&kae=d&kn=1&kf=fw&k1=-1&kd=-1&q={searchTerms}",
            description: "Поиск по сайту в DuckDuckGo",
            icon: "data:image/png;base64,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"
        }
    };
    var pn = "CB.searchEngineIndexes", sep = "\u00A0"; custombuttons.isPref(pn, "");
    var old = custombuttons.getPrefs(pn).split(sep);

    var ss = Services.search, names = [];
    function eng(name) ss.getEngineByName(name);
    for(var name of old) {
        if (name in data) continue;
        var engine = eng(name);
        engine && ss.removeEngine(engine);
    }
    for(var name in data) {
        var {url, description, icon} = data[name];
        var engine = eng(name), was = true;
        if (!engine) {
            was = false;
            ss.addEngineWithDetails(name, icon, null, description, "GET", url);
            engine = eng(name);
        }
        if (!engine) continue; else engine = engine.wrappedJSObject;
        if (was) {
            engine._urls = [];
            engine._initFromMetadata(name, icon, null, description, "GET", url, null);
        }
        engine._queryCharset = "utf-8";
        engine._urls[0].getSubmission = function(terms) {
            var {host, protocol} = content.location, suffix = "";
            if (protocol.startsWith("http") && host) suffix += "+site:" + host;
            var url = this.template.replace("{searchTerms}", terms + suffix);
            return { uri: makeURI(url), postData: null };
        }
        names.push(name);
    }
    custombuttons.setPrefs(pn, names.join(sep));
});