setTimeout(obj => obj.init(), 1000, {
    style: `
        @namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
        tab.tabbrowser-tab[inbookmarks] .tab-text.tab-label {
            background-color: pink;
        }
        tab.tabbrowser-tab[inbookmarks] label.inbookmarks-counter {
            padding: 0 2px;
            margin: 0 2px 0 -4px;
            color: white;
            font-weight: bold;
            border: 1px solid white;
            background-color: blue;
        }

    `.trim().replace(/;/g, " !important;"),

    addProcessingInstruction: function(add) {
        if (add) {
            this.pi = document.createProcessingInstruction("xml-stylesheet",
                `type="text/css" href="data:text/css,${encodeURIComponent(this.style)}"`
            );
            document.insertBefore(this.pi, document.firstChild);
        } else
            this.pi.remove();
    },
    init: function() {
        this.addProcessingInstruction(true);
        this.setAttributeForAllTabs(true);
        gBrowser.addTabsProgressListener(this);
        PlacesUtils.addLazyBookmarkObserver(this);

        addEventListener("TabMove", this, false, gBrowser.tabContainer);
        addDestructor(this.destroy, this);
    },
    destroy: function() {
        this.addProcessingInstruction(false);
        this.setAttributeForAllTabs(false);
        gBrowser.removeTabsProgressListener(this);
        PlacesUtils.removeLazyBookmarkObserver(this);
    },
    handleEvent: function(e) this.updateInbookmarksCounter(e.target),

    getBookmarksCount: uri => PlacesUtils.getBookmarksForURI(uri).length,
    onItemAdded: function(id, parent, ind, type, uri) this.onItem(type, uri),
    onItemRemoved: function(id, parent, ind, type, uri) this.onItem(type, uri),
    onItemChanged: function(id, property, isAnno, value, lm, type)
        property == "uri" && this.onItem(type),

    onItem: function(type, uri) {
        type == Ci.nsINavBookmarksService.TYPE_BOOKMARK
        && this.setAttributeForAllTabs(true, uri);
    },
    onLocationChange: function(browser, wp, req, uri) {
        var tab = gBrowser.getTabForBrowser(browser);
        this.setInbookmarksCounter(tab, 0);
        this.setAttributeForTab(tab, this.getBookmarksCount(uri));
    },
    setAttributeForAllTabs: function(set, uri) {
        for(var tab of gBrowser.tabs) {
            var curr = tab.linkedBrowser.currentURI;
            if (uri && !uri.equals(curr)) continue;
            var state = set && this.getBookmarksCount(curr);
            this.setAttributeForTab(tab, state);
        }
    },
    setAttributeForTab: function(tab, set) {
        set ? tab.setAttribute("inbookmarks", set) : tab.removeAttribute("inbookmarks");
        this.updateInbookmarksCounter(tab, set);
    },
    updateInbookmarksCounter: function(tab, count)
        setTimeout((tab, count, obj) => obj.setInbookmarksCounter(tab, count), 50, tab, count, this),

    setInbookmarksCounter: function(tab, count = this.getBookmarksCount(tab.linkedBrowser.currentURI)) {
        var lab = document.getAnonymousElementByAttribute(tab, "class", "inbookmarks-counter");
        if (count < 2) lab && lab.remove();
        else {
            if (!lab) {
                var lab = document.createElement("label");
                lab.className = "inbookmarks-counter";
                var before = document.getAnonymousElementByAttribute(tab, "class", "tab-throbber");
                before.parentNode.insertBefore(lab, before);
            }
            lab.value = count;
        }
    }
});

setTimeout(obj => obj.init(), 1000, {
    style: `
        @namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
        tab.tabbrowser-tab[inbookmarks] .tab-text.tab-label {
            font-style: italic;
            font-weight: bold;
        }
        tab.tabbrowser-tab[inbookmarks] label.inbookmarks-counter {
            padding: 0 2px;
            margin: 0 2px 0 -4px;
            color: white;
            font-weight: bold;
            border: 1px solid white;
            background-color: blue;
        }

    `.trim().replace(/;/g, " !important;").replace(/(@namespace[^;]+) !important;/, "$1;"),

    addProcessingInstruction: function(add) {
        if (add) {
            this.pi = document.createProcessingInstruction("xml-stylesheet",
                `type="text/css" href="data:text/css,${encodeURIComponent(this.style)}"`
            );
            document.insertBefore(this.pi, document.firstChild);
        } else
            this.pi.remove();
    },
    init: function() {
        this.addProcessingInstruction(true);
        this.setAttributeForAllTabs(true);
        gBrowser.addTabsProgressListener(this);
        PlacesUtils.addLazyBookmarkObserver(this);

        addEventListener("TabMove", this, false, gBrowser.tabContainer);
        addDestructor(this.destroy, this);
    },
    destroy: function() {
        this.addProcessingInstruction(false);
        this.setAttributeForAllTabs(false);
        gBrowser.removeTabsProgressListener(this);
        PlacesUtils.removeLazyBookmarkObserver(this);
    },
    handleEvent: function(e) this.updateInbookmarksCounter(e.target),

    getBookmarksCount: uri => PlacesUtils.getBookmarksForURI(uri).length,
    onItemAdded: function(id, parent, ind, type, uri) this.onItem(type, uri),
    onItemRemoved: function(id, parent, ind, type, uri) this.onItem(type, uri),
    onItemChanged: function(id, property, isAnno, value, lm, type)
        property == "uri" && this.onItem(type),

    onItem: function(type, uri) {
        type == Ci.nsINavBookmarksService.TYPE_BOOKMARK
        && this.setAttributeForAllTabs(true, uri);
    },
    onLocationChange: function(browser, wp, req, uri) {
        var tab = gBrowser.getTabForBrowser(browser);
        this.setInbookmarksCounter(tab, 0);
        this.setAttributeForTab(tab, this.getBookmarksCount(uri));
    },
    setAttributeForAllTabs: function(set, uri) {
        for(var tab of gBrowser.tabs) {
            var curr = tab.linkedBrowser.currentURI;
            if (uri && !uri.equals(curr)) continue;
            var state = set && this.getBookmarksCount(curr);
            this.setAttributeForTab(tab, state);
        }
    },
    setAttributeForTab: function(tab, set) {
        set ? tab.setAttribute("inbookmarks", set) : tab.removeAttribute("inbookmarks");
        this.updateInbookmarksCounter(tab, set);
    },
    updateInbookmarksCounter: function(tab, count) {
        var win = tab.linkedBrowser.contentWindow;
        if (win.document.readyState == "loading") {
            var obj = this;
            win.addEventListener("load", function load(e) {
                win.removeEventListener(e.type, load, false);
                obj.setInbookmarksCounter(tab);
            }, false);
        } else { 
            count = count === false ? 0 : undefined;
            setTimeout((tab, obj) => obj.setInbookmarksCounter(tab, count), 50, tab, this);
        }
    },
    setInbookmarksCounter: function(tab, count = this.getBookmarksCount(tab.linkedBrowser.currentURI)) {
        var lab = document.getAnonymousElementByAttribute(tab, "class", "inbookmarks-counter");
        if (count < 2) lab && lab.remove();
        else {
            if (!lab) {
                var lab = document.createElement("label");
                lab.className = "inbookmarks-counter";
                var before = document.getAnonymousElementByAttribute(tab, "class", "tab-throbber");
                before.parentNode.insertBefore(lab, before);
            }
            lab.setAttribute("value", count);
        }
    }
});

@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

#personal-bookmarks, #PersonalToolbar {
    min-height: unset!important;
    height: auto!important; /*высота панели закладок будет зависеть от размера шрифта и иконок*/
}
#PersonalToolbar .bookmark-item {
    -moz-appearance: none !important;
    padding: 0 1px!important; /*отступы у закладок*/
}
#PersonalToolbar .bookmark-item > .toolbarbutton-icon {
    width: auto!important;
    height: 12px!important;/*размер иконок*/
    margin: 0 1px 0 0!important; /*отступы у иконок*/
}
#PersonalToolbar .bookmark-item > .toolbarbutton-text{
    font-size: 10px!important; /*размер шрифта*/
    margin: 0!important;
}