this. toolbarController. handleMouseMove = !this. checked;

this. toolbarController =
{
    _handleMouseMove: true,
    
    set handleMouseMove (val)
    {
        this. _handleMouseMove = val;
        
        document. getElementById ("sidebar-box"). collapsed = val;
    },
    handleEvent: function (evt)
        {
        if (!this. _handleMouseMove)
        return;            
                           var toolbar = document. getElementById ("sidebar-box");
            if (evt. pageX <= 5)
                toolbar. collapsed = false;
            if (evt. pageX >= 100)
                toolbar. collapsed = true;
        }
};
window. addEventListener ("mousemove", this. toolbarController, true);
this. type = "checkbox";

if (this. cbController. registered)
    this. cbController. unregister ();
else
    this. cbController. register ();

var Cc = Components. classes;
var Ci = Components. interfaces;

var btn = this;

this. cbController =
{
    registered: false,
    oldAddTabMethod: null,
    isURLOpenedTopic: "3900c2e9-6032-4338-95eb-7ba8fd1f8a33:isURLOpened?",
    focusWindowIfURLIsOpenedTopic: "3900c2e9-6032-4338-95eb-7ba8fd1f8a33:focusWindowIfURLIsOpened",
    notificationSender: false,

    get os ()
    {
    return Cc ["@mozilla.org/observer-service;1"]. getService (Ci. nsIObserverService);
    },

    register: function ()
    {
    this. oldAddTabMethod = gBrowser. addTab;
    gBrowser. addTab = (function (context)
    {
        return function addTab (aURI, aReferrerURI, aCharset, aPostData, aOwner, aAllowThirdPartyFixup)
        {
        return context. addTab. apply (context, arguments);
        };
    }) (this);
    this. os. addObserver (this, this. isURLOpenedTopic, false);
    this. os. addObserver (this, this. focusWindowIfURLIsOpenedTopic, false);
    this. registered = true;
    btn. checked = true;
    },

    unregister: function ()
    {
    gBrowser. addTab = this. oldAddTabMethod;
    this. oldAddTabMethod = null;
    this. os. removeObserver (this, this. focusWindowIfURLIsOpenedTopic);
    this. os. removeObserver (this, this. isURLOpenedTopic);
    this. registered = false;
    btn. checked = false;
    },

    getTabIndex: function (url)
    {
    var res = -1;
    var num = gBrowser. browsers. length;
    var br;
    for (var i = 0; i < num; i++)
    {
        br = gBrowser. getBrowserAtIndex (i);
        if (br. currentURI. spec == url)
        {
        res = i;
        break;
        }
    }
    return res;
    },

    observe: function (subject, topic, data)
    {
    if (this. notificationSender)
        return;
    if (!(subject instanceof Ci. nsISupportsPRBool))
        return;
    if (this. getTabIndex (data) != -1)
    {
        subject. data = true;
        window. getAttention ();
        if (topic == this. focusWindowIfURLIsOpenedTopic)
        window. focus ();
    }
    },

    addTab: function addTab (aURI, aReferrerURI, aCharset, aPostData, aOwner, aAllowThirdPartyFixup)
    {
    if (aURI == "about:blank")
        return this. oldAddTabMethod. apply (gBrowser, arguments);
    var topic = this. isURLOpenedTopic;
    var index = this. getTabIndex (aURI);
    if (index == -1)
        topic = this. focusWindowIfURLIsOpenedTopic;
    var isURLOpened = Cc ["@mozilla.org/supports-PRBool;1"]. createInstance (Ci. nsISupportsPRBool);
    isURLOpened. data = false;
    this. notificationSender = true;
    this. os. notifyObservers (isURLOpened, topic, aURI);
    this. notificationSender = false;
    if (index != -1)
        return gBrowser. selectedTab = gBrowser. tabContainer. childNodes [index];
    else if (!isURLOpened. data)
        return this. oldAddTabMethod. apply (gBrowser, arguments);
    else
        return gBrowser. selectedTab;
    }
};

this. onDestroy = function ()
{
    this. cbController. unregister ();
};

setTimeout
(
    function ()
    {
    btn. cbController. register ();
    },
    1000
);

var menu = <menupopup xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
              xmlns:cb="http://xsms.nm.ru/custombuttons/"
              onclick="this. parentNode. handleClick (event);">
        <menuitem label="Engadget"
              class="menuitem-iconic"
              image="http://www.blogsmithmedia.com/www.engadget.com/media/favicon.ico"
              cb:url="http://www.engadget.com/"/>
        <menuitem label="ScienceDaily"
              class="menuitem-iconic"
              image="http://www.sciencedaily.com/favicon.ico"
              cb:url="http://www.sciencedaily.com/"/>
        <menuitem label="New Scientist"
              class="menuitem-iconic"
              image="http://www.newscientist.com/favicon.ico"
              cb:url="http://www.newscientist.com/"/>
        <menuitem label="Popular Mechanics"
              class="menuitem-iconic"
              image="http://www.popularmechanics.com/favicon.ico"
              cb:url="http://www.popularmechanics.com/"/>
        <menuitem label="Popular Science"
              class="menuitem-iconic"
              image="http://www.popsci.com/favicon.ico"
              cb:url="http://www.popsci.com/"/>
        <menuitem label="Physics.org"
              class="menuitem-iconic"
              image="http://www.physorg.com/favicon.ico"
              cb:url="http://www.physorg.com/"/>
      </menupopup>;
this. appendChild (custombuttonsUtils. makeXML (menu));
this. type = "menu";
this. orient = "horizontal";
 
this. handleClick = function (event)
{
    var menuitem = event. target;
    var url = menuitem. getAttributeNS ("http://xsms.nm.ru/custombuttons/", "url");
    if (event. button == 0)
    {
        let newTab = gBrowser.addTab(url)
               gBrowser.selectedTab = newTab;// loads into a new tab;
        }
    else if (event. button == 1)
        gBrowser. addTab (url);
    this. open = false;
};

//Hide sidebar-splitter
var cssStr = <![CDATA[

#sidebar-splitter
{-moz-appearance: none !important;
display:none!important;}

]]>
    .toString()
    .replace(/%button%/g, "#" + this.id);
var cssURI = this._cssURI = makeURI( // chrome://global/content/contentAreaUtils.js
    "data:text/css,"
    + encodeURIComponent(cssStr)
);
this.setSheet = function(cssURI, addFlag) {
    var sss = Components.classes["@mozilla.org/content/style-sheet-service;1"]
        .getService(Components.interfaces.nsIStyleSheetService);
    if(sss.sheetRegistered(cssURI, sss.AGENT_SHEET) && !addFlag)
        sss.unregisterSheet(cssURI, sss.AGENT_SHEET);
    if(addFlag)
        sss.loadAndRegisterSheet(cssURI, sss.AGENT_SHEET);
}
this.setSheet(cssURI, true);
this.onDestroy = function() {
this.setSheet(this._cssURI, true);
};

this. checked = !this. checked;
if (this. checked)
    {this. image = "data:image/x-icon;base64,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";
    var cssStr = <![CDATA[

#sidebar-splitter
{-moz-appearance: none !important;
display:none!important;}

]]>
    .toString()
    .replace(/%button%/g, "#" + this.id);
var cssURI = this._cssURI = makeURI( // chrome://global/content/contentAreaUtils.js
    "data:text/css,"
    + encodeURIComponent(cssStr)
);
this.setSheet = function(cssURI, addFlag) {
    var sss = Components.classes["@mozilla.org/content/style-sheet-service;1"]
        .getService(Components.interfaces.nsIStyleSheetService);
    if(sss.sheetRegistered(cssURI, sss.AGENT_SHEET) && !addFlag)
        sss.unregisterSheet(cssURI, sss.AGENT_SHEET);
    if(addFlag)
        sss.loadAndRegisterSheet(cssURI, sss.AGENT_SHEET);
}
this.setSheet(cssURI, true);
this.onDestroy = function() {
    this.setSheet(this._cssURI, true);};}
else
    {this. image = "data:image/x-icon;base64,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";
    this.setSheet(this._cssURI, false);}