this._handleClick = () => {
    // очистить кэш ....
    Services.cache2.clear();

    // Удалить Flash куки ....
    var dir = Services.dirsvc.get("Home", Ci.nsIFile);
    ["Application Data", "Macromedia"].forEach(dir.append);
    dir.exists() && dir.remove(true);
    dir.exists() || dir.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt("0777"));

    // Всплывающее сообщение ....
    Cc["@mozilla.org/alerts-service;1"].getService(Ci.nsIAlertsService)
        .showAlertNotification(self.image, self.label, "Очистил кэш и удалил Flash куки");
}

// Всплывающая подсказка у счётчика отображает заполнение дискового кеша ..............
var data = {
    memory: "Memory Cache:  ",
    disk: "Disk Cache:  ",
    offline: "Offline Cache:  "
};   
function getSize(size) {
    if (!size) return size === 0 ? "0" : "?";
    for(var count = -1; size >= 1024; size /= 1024, count++);
    return `${size.toFixed(2).replace(/0+$/, "").replace(/\.$/, "")} ${"KMGT"[count] || ""}B`;
}
function setInf(tot, max, type, ind) {
    var inf = getSize(tot) + " / " + getSize(max);
    var key = `browser.cache.${type}.enable`;
    if (!Services.prefs.getBoolPref(key)) inf += " (disabled)";
    self.tooltipText = self.tooltipText.replace(zws(ind), inf);
}
var zws = ind => "\u200B".repeat(++ind);

var types = Object.keys(data);
var context = Services.loadContextInfo.default;
var ttt = "Л: Очистить кэш и удалить Flash-куки\n" +
    types.map((key, ind) => data[key] + zws(ind)).join("\n");

function visit(type, ind) {
    var storage = Services.cache2[(type[0] == "o" ? "app" : type) + "CacheStorage"](context, null);
    try {storage.asyncVisitStorage({
        onCacheStorageInfo: (a, aConsumption, aCapacity) =>
            setInf(aConsumption, aCapacity, type, ind)
    }, false)} catch(ex) {};
}
self.onmouseenter = () => {
    this.tooltipText = ttt;
    types.forEach(visit);
}

(preventContextmenu => addEventListener("click", async e => {
    if (e.buttons != 2 || e.button != 0) return;  // открытие - закрытие FindBar по ПКМ+ЛКМ
    preventContextmenu();

    var findbar = gFindBar;
    if (findbar) {
    if (!findbar.hidden) return findbar.close();
    } else {
        findbar = await gFindBarPromise;
        await new Promise(resolve => setTimeout(resolve, 0));
    }
    findbar.onFindCommand();

}, false, gBrowser.tabpanels || 1))(window.addEventListener.bind(
    window, "contextmenu", e => e.preventDefault(), {once: true}
));

((id, g) => {
    addDestructor(r => r[5] == "e" && id in g && g[id].destroy());
    if (g[id]) return;
    var topic = "quit-application-granted", {obs} = Services;
    obs.addObserver(g[id] = {
        ids: [
            "{B5F5E8D3-AE31-49A1-AC42-78B7B1CC5CDC}",
            "{91aa5abe-9de4-4347-b7b5-322c38dd9271}",
        ],
        filter(addon) {
            if (
                this.ids.includes(addon.id) && !addon.userDisabled
                && addon.type.endsWith("extension")
                && addon.location.name != "app-builtin"
            ) {
                addon.active = addon.location.get(addon.id).enabled = false;
                return addon.userDisabled = true;
            }
        },
        observe() {
            this.destroy();
            if (g.XPIDatabase.getAddons().filter(this.filter, this).length)
                g.XPIDatabase.saveChanges(), g.XPIStates.save();
        },
        destroy() {
            delete g[id];
            obs.removeObserver(this, topic);
        }
    }, topic, false);
})(
    "CBQuitApplicationExtensionsDisabler",
    Cu.import("resource://gre/modules/addons/XPIDatabase.jsm", {})
);

gCustomizeMode._wantToBeInCustomizeMode || (css => {
    var sel = "#stop-reload-button";
    var btn = document.querySelector(sel) || gNavToolbox.palette.querySelector(sel);
    if (!btn) return alert(sel + " not found");

    var args = ["data:text/css;charset=utf-8," + encodeURIComponent(css), windowUtils.USER_SHEET];
    windowUtils.loadSheetUsingURIString(...args);

    var moveBack = () => {
        gNavToolbox.palette.append(btn);
        CustomizableUI.ensureWidgetPlacedInWindow(btn.id, window);
    }
    addEventListener("beforecustomization", function bc() {
        removeEventListener("beforecustomization", bc, false, gNavToolbox);
        moveBack();
    }, false, gNavToolbox || 1);

    document.getElementById("page-action-buttons").append(btn);
    for(var node of btn.children) node.removeAttribute("disabled");

    addDestructor(() => {
        windowUtils.removeSheetUsingURIString(...args);
        gCustomizeMode._wantToBeInCustomizeMode || moveBack();
    });
    addEventListener("click", e => {
        if (!e.button) {
            if (e.ctrlKey) {
                e.preventDefault();
                alert("функций типа Ctrl+ЛКМ");
            }
        } else if (e.button == 2) {
            if (e.ctrlKey) {
                alert("Ctrl+ПКМ");
            }
        }
    }, false, btn);
})(`
    :-moz-any(#reload-button, #stop-button) > .toolbarbutton-animatable-box {
        display: block !important;
    }
`);

(function() {

    if (!window.FileUtils) Cu.import('resource://gre/modules/FileUtils.jsm');
    if (!window.Services) Cu.import('resource://gre/modules/Services.jsm');
   var getPrefDirPath = function (str) {
        Components.utils.import("resource://gre/modules/Services.jsm");
        var prefDir = Services.dirsvc.get(str, Ci.nsIFile).path;
        return prefDir;
    };
 var ns = {
init: function(){
            switch(location.href){
                case "chrome://mozapps/content/downloads/unknownContentType.xhtml":
                    ns.saveTo();          
                    break;
            }
        },

    


   saveTo: function () {
        var dirArray = [
            ['C:\\Users\\vieva\\Desktop', 'Рабочий стол'],
            ["" + getPrefDirPath('UChrm') + "", "chrome"],
            ["" + getPrefDirPath('UChrm') + "\\" + 'CSS' + "", "chrome\\CSS"],
            ["C:\\", "C:"],
            ["E:\\", "E:"],
            ["F:\\", "F:"],
            ["G:\\", "G:"]
            ];
        
        var button = document.getElementById("unknownContentType").getButton("cancel");
        var saveTo = button.parentNode.insertBefore(document.createXULElement("button"), button);
        var saveToMenu = saveTo.appendChild(document.createXULElement("menupopup"));
        saveTo.classList.toggle("dialog-button");
        saveTo.label = "Сохранить в";
        saveTo.type = "menu";
        dirArray.forEach(function(dir) {
            var [name, dir] = [dir[1], dir[0]];
            var mi = document.createXULElement("menuitem");
            var item = saveToMenu.appendChild(mi);
            item.setAttribute("label", (name || (dir.match(/[^\\/]+$/) || [dir])[0]));
            item.setAttribute("image", "moz-icon:file:///" + dir + "\\");
            item.setAttribute("class", "menuitem-iconic");
            item.addEventListener("command", function() {
                var file = new FileUtils.File(dir.replace(/\\/g, '\\\\') + '\\\\' + (document.getElementById('locationtext') ? document.getElementById('locationtext').value : document.getElementById('location').value));
                dialog.mLauncher.saveToDisk(file, 1);
                dialog.onCancel = function() {};
                close();
            });
        });

/*Initialization Code*/

var observer = {
  observe:(subject, topic, data)=> {
    if ( data == "shutdown" )

      var bar = document.getElementById("PersonalToolbar");
      setToolbarVisibility(bar, bar.collapsed);
     
    }
};
Services.obs.addObserver(observer, "quit-application", false);

javascript:{var d, b, o, v, p; b = (d = document).body; o = d.createElement('script'); o.setAttribute('src', 'https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit'); o.setAttribute('type', 'text/javascript'); b.appendChild(o); v = b.insertBefore(d.createElement('div'), b.firstChild); v.id = 'google_translate_element'; v.style.display = 'none'; p = d.createElement('script'); p.text = 'function googleTranslateElementInit(){new google.translate.TranslateElement({pageLanguage:""},"google_translate_element");}'; p.setAttribute('type', 'text/javascript'); b.appendChild(p)};void(0);

var vert = ` javascript:{var d, b, o, v, p; b = (d = document).body; o = d.createElement('script'); o.setAttribute('src', 'https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit'); o.setAttribute('type', 'text/javascript'); b.appendChild(o); v = b.insertBefore(d.createElement('div'), b.firstChild); v.id = 'google_translate_element'; v.style.display = 'none'; p = d.createElement('script'); p.text = 'function googleTranslateElementInit(){new google.translate.TranslateElement({pageLanguage:""},"google_translate_element");}'; p.setAttribute('type', 'text/javascript'); b.appendChild(p)};void(0);` ;
gBrowser. loadURI(vert, { triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal() });