try {	CustomizableUI.createWidget({ tooltiptext: `ЛКМ:	Reader`,
		type: "custom", id: "ucf_Reader", label: "Reader", localized: false,
		onBuild(doc) {
			var trbn = doc.createXULElement("toolbarbutton");
			trbn.id = this.id; trbn.tooltipText = this.tooltiptext; trbn.label = this.label;
			trbn.className = "toolbarbutton-1 chromeclass-toolbar-additional";
			trbn.setAttribute("context", false);
			trbn.style.setProperty("list-style-image", 'url("data:image/png;base64,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")', "important");
			trbn.addEventListener("click", function(e) {
				var win = e.view;
				if (e.button == 0) {

					var green = `
@-moz-document url-prefix("http"), url-prefix("https"), url-prefix("ftp"), url-prefix("file") {
html *, html {
background: #ccd1d1 !important; text-shadow: none !important;
color: #000000 !important;
-moz-border-top-colors: #8FBC8F !important; -moz-border-bottom-colors: #8FBC8F!important; -moz-border-left-colors: #8FBC8F !important; -moz-border-right-colors: #8FBC8F !important;
}
code, pre, input, samp, kbd, var, dfn,.postright {
-moz-appearance: none !important;
background-color: #BADBAD !important;
}
input, select, textarea, button {
-moz-appearance: none !important;
border: 1px solid #BADBAD !important;
background-color: #BADBAD !important;
}
.codebox, BLOCKQUOTE, TEXTAREA, .spoiler { -moz-border-top-colors: #444  !important; -moz-border-bottom-colors: #444 !important;
-moz-border-left-colors: #444 !important; -moz-border-right-colors: #444 !important; }
a:link { color: #300090 !important;
}
a:visited { color: #489412 !important; }
a:active { color: #d81e1e !important; }
a:hover { color: #d81e1e !important; }
}`;
					var sss = this.sss = Cc["@mozilla.org/content/style-sheet-service;1"].getService(Ci.nsIStyleSheetService);
					var uri = this.uri = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService).newURI("data:text/css,"+ encodeURIComponent(green),null,null);

					function setStyleForPages( reason ) {
						var style = sss.sheetRegistered(uri, sss.AGENT_SHEET);
					style
						? sss.unregisterSheet(uri, sss.AGENT_SHEET)
						: sss.loadAndRegisterSheet(uri, sss.AGENT_SHEET);
					};
					setStyleForPages();
					return;
				}
			}, false);
			return trbn;
		},
	});
} catch(e) {}

@namespace url("http://www.w3.org/1999/xhtml");
@-moz-document regexp("(?:https?|ftp|file):\/\/.*") {
html *, html {
	background: #222 !important;
	text-shadow: none !important;
	border-top-color: #222 !important;
	border-bottom-color: #222!important;
	border-left-color: #222 !important;
	border-right-color: #222 !important;
	color: silver !important;
	}
html, body, input, textarea, select, button {
	color: silver !important;
	}
a:link {
	color: #5794D0 !important;
	}
code, pre, input, samp, kbd, var, dfn {
	appearance: none !important;
	background-color: #191919 !important;
	color: silver !important;
	}
input, select, button {
	appearance: none !important;
	border: 1px solid #555 !important;
	background-color: #191919 !important;
	color: silver !important;
	}
.codebox, .scrollbox, blockquote, blockquote div p, textarea, .spoiler {
	background: #191919 !important;
	background-color: #191919 !important;
	border-top-color: #333 !important;
	border-bottom-color: #333 !important;
	border-left-color: #333 !important;
	border-right-color: #333 !important;
	}
.spoiler-plus, .spoiler-minus {
	background-color: #191919 !important;
	}
/* forum.mozilla-russia.org */
#brdmenu.inbox ul,
table tbody tr td, table thead tr th,
.blockpost {
	appearance: none !important;
	border: 1px solid #555 !important;
	}
.blockpost h2 {
	border-bottom: 1px solid #555 !important
	}
.postright {
	background-color: #191919 !important;
	padding: 0 0 0 2px !important;
	}
.postfootleft, .postfootright {
	border-top: 1px solid #555 !important;
	height: 20px !important;
	}
.postfootleft p, .postfootright ul {
	margin-top: -8px !important;
	}
[id^="message"], .postsignature p {
	padding: 5px 5px 5px 10px !important;
	}
.postedit {
	padding: 0 20px 0 0 !important;
	}
/* kinozal */
.mn2 {
	appearance: none !important;
	border: 1px solid #555 !important;
	}




}

// Этот скрипт можно использовать для создания кнопок с помощью CustomizableUI.createWidget

// Отдельная кнопка about:config с альт.управлением и открытием "about:cfg" от Vitaliy V.
// https://forum.mozilla-russia.org/viewtopic.php?pid=795555#p795555
(async (
id = "ucf-open-about-config",
label = "about:config",
tooltiptext = "	   ЛКМ	: Открыть about:config\n  Ctrl+ЛКМ	: Искать выделенное / буфер в about:config\nShift+ЛКМ	: Открыть окно about:cfg\n	   ПКМ 	: Открыть вкладку about:cfg\n  Ctrl+ПКМ	: Искать выделенное / буфер во вкладке about:cfg\nShift+ПКМ	: Искать выделенное / буфер в окне about:cfg",
aboutoldurl = "about:cfg",
about_config = {
    get clipboardHelp() {
        delete this.clipboardHelp;
        return this.clipboardHelp = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
    },
    readFromClipboard(win) {
        var url = "";
        try {
            var trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(Ci.nsITransferable);
            trans.init(win.docShell.QueryInterface(Ci.nsILoadContext));
            trans.addDataFlavor("text/unicode");
            var clipboard = Services.clipboard;
            clipboard.getData(trans, clipboard.kGlobalClipboard);
            var data = {};
            trans.getTransferData("text/unicode", data, {});
            if (data.value) {
                data = data.value.QueryInterface(Ci.nsISupportsString);
                url = data.data;
            }
        } catch (ex) {}
        return url;
    },
    openClipboardConfigTab(win, clip = "", copy, url = "about:config") {
        var filter = this.readFromClipboard(win), nowarn = false, pref = url === "about:config" ? "browser.aboutConfig.showWarning" : "general.warnOnAboutConfig";
        if (copy && clip != filter)
            this.clipboardHelp.copyString(clip);
        if (Services.prefs.getBoolPref(pref, true)) {
            Services.prefs.setBoolPref(pref, false);
            nowarn = true;
        }
        var browser = win.gBrowser.getBrowserForTab(win.gBrowser.selectedTab = this.addTab(win, url));
        browser.addEventListener("pageshow", e => {
            var doc = e.target;
            var input = doc && doc.querySelector("input#about-config-search, search-textbox#textbox");
            if (input && filter) {
                input.value = filter;
                input.focus();
                input.dispatchEvent(new doc.defaultView.Event("input", { bubbles: true }));
            }
            if (nowarn)
                win.setTimeout(() => {
                    Services.prefs.setBoolPref(pref, true);
                }, 200);
        }, { once: true });
    },
    openSelectedConfig(win, url, oldwin) {
        var clip = this.readFromClipboard(win);
        win.goDoCommand("cmd_copy");
        win.setTimeout(() => {
            if (!oldwin)
                this.openClipboardConfigTab(win, clip, true, url);
            else
                this.openSelectedOldConfigWin(win, clip);
        }, 100);
    },
    addTab(win, url, params = {}) {
        params.triggeringPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
        params.index = win.gBrowser.selectedTab._tPos + 1;
        return win.gBrowser.addTab(url, params);
    },
    get configoldurl() {
        delete this.configoldurl;
        let mod = Cc[`@mozilla.org/network/protocol/about;1?what=${aboutoldurl.split(":")[1]}`].getService(Ci.nsIAboutModule);
        let url;
        try {
            url = mod.getChromeURI(Services.io.newURI(aboutoldurl)).spec;
        } catch (e) {
            url = mod.wrappedJSObject.uri?.spec;
        }
        return this.configoldurl = url || aboutoldurl;
    },
    async openSelectedOldConfigWin(win, clip) {
        var filter = this.readFromClipboard(win);
        if (clip != filter)
            this.clipboardHelp.copyString(clip);
        var type = "Preferences:ConfigManager", id = "config";
        var _win = Services.wm.getMostRecentWindow(type);
        if (!_win) {
            let nowarn = false, pref = "general.warnOnAboutConfig";
            if (Services.prefs.getBoolPref(pref, true)) {
                Services.prefs.setBoolPref(pref, false);
                nowarn = true;
            }
            let url = this.configoldurl;
            let xs = Services.xulStore;
            let sx = xs.getValue(url, id, "screenX");
            let sy = xs.getValue(url, id, "screenY");
            let wh = xs.getValue(url, id, "width");
            let ht = xs.getValue(url, id, "height");
            let sm = xs.getValue(url, id, "sizemode");
            let features = `chrome,dialog=no,resizable,${sx && sy ? `screenX=${sx !== "0" ? sx : "1"},screenY=${sy !== "0" ? sy : "1"}` : "centerscreen"}${wh && ht ? `,width=${wh},height=${ht}` : ""}`;
            _win = win.openDialog(url, type, features);
            await new Promise(resolve => {
                _win.windowRoot.addEventListener("DOMContentLoaded", () => {
                    _win.windowRoot.addEventListener("MozUpdateWindowPos", () => {
                        if (sm === "maximized")
                            _win.maximize();
                    }, { once: true, capture: true });
                    resolve();
                }, { once: true });
            });
            if (nowarn)
                _win.setTimeout(() => {
                    Services.prefs.setBoolPref(pref, true);
                }, 200);
        }
        var doc = _win.document;
        var docEl = doc.documentElement;
        docEl.setAttribute("windowtype", type);
        docEl.id = id;
        docEl.setAttribute("persist", "screenX screenY width height sizemode");
        _win.focus();
        var input = doc.querySelector("search-textbox#textbox");
        if (!input) return;
        input.value = filter;
        input.focus();
        input.dispatchEvent(new _win.Event("input", { bubbles: true }));
    },
}) => {
    CustomizableUI.createWidget({
        id: id,
        type: "custom",
        label: label,
        tooltiptext: tooltiptext,
        localized: false,
        defaultArea: CustomizableUI.AREA_NAVBAR,
        onBuild(doc) {
            var win = doc.defaultView;
            var trbn = doc.createXULElement("toolbarbutton");
            trbn.id = id;
            trbn.className = "toolbarbutton-1 chromeclass-toolbar-additional";
            trbn.setAttribute("label", label);
            trbn.setAttribute("context", "");
            trbn.setAttribute("tooltiptext", tooltiptext);
            trbn.setAttribute("image", "chrome://user_chrome_files/content/vertical_top_bottom_bar/svg/about-config-16.svg");
            trbn.addEventListener("click", function(e) {
                if (e.button == 0) {
                    if (e.shiftKey)
                        about_config.openSelectedConfig(win);
                    if (e.getModifierState("Accel"))
                        about_config.openSelectedConfig(win);
                    else
                        win.gBrowser.selectedTab = about_config.addTab(win, "about:config");
                } else if (e.button == 1)
                        about_config.openSelectedConfig(win);
                else if (e.button == 2) {
                    e.preventDefault();
                    e.stopPropagation();
                    if (e.shiftKey)
                        about_config.openSelectedConfig(win, undefined, true);
                    else if (e.getModifierState("Accel"))
                        about_config.openSelectedConfig(win, "about:cfg");
                    else
                        win.gBrowser.selectedTab = about_config.addTab(win, "about:cfg");
                }
            });
            return trbn;
        }
    });
})();

trbn.addEventListener("click", e => {
    if (e.button == 0) {
        if (e.getModifierState("Accel"))
            about_config.openClipboardConfigTab(win, "", false, aboutoldurl);
        else
            win.gBrowser.selectedTab = about_config.addTab(win, aboutoldurl);
    } else if (e.button == 1)
        win.gBrowser.selectedTab = about_config.addTab(win, aboutoldurl);
    else if (e.button == 2) {
        e.preventDefault();
        e.stopPropagation();
        if (e.getModifierState("Accel"))
            about_config.openSelectedConfig(win, aboutoldurl);
        else if (e.altKey)
            about_config.openSelectedConfig(win, undefined, true);
        else
            about_config.openOldConfigWin(win);
    }
});

// Этот скрипт можно использовать для создания кнопок с помощью CustomizableUI.createWidget

// Отдельная кнопка about:config с альт.управлением и открытием "about:cfg" от Vitaliy V.
// https://forum.mozilla-russia.org/viewtopic.php?pid=795555#p795555
(async (
id = "ucf-open-about-config",
label = "about:config",
tooltiptext = "	   ЛКМ	: Открыть about:config\n  Ctrl+ЛКМ	: Искать выделенное / буфер в about:config\n	   ПКМ 	: Открыть вкладку about:cfg\n  Ctrl+ПКМ	: Искать выделенное / буфер во вкладке about:cfg\nShift+ЛКМ	: Открыть окно about:cfg\nShift+ПКМ	: Искать выделенное / буфер в окне about:cfg",
img = "chrome://user_chrome_files/content/vertical_top_bottom_bar/svg/about-config-16.svg",
aboutoldurl = "about:cfg",
about_config = {
    get clipboardHelp() {
        delete this.clipboardHelp;
        return this.clipboardHelp = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
    },
    readFromClipboard(win) {
        var url = "";
        try {
            var trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(Ci.nsITransferable);
            trans.init(win.docShell.QueryInterface(Ci.nsILoadContext));
            trans.addDataFlavor("text/unicode");
            var clipboard = Services.clipboard;
            clipboard.getData(trans, clipboard.kGlobalClipboard);
            var data = {};
            trans.getTransferData("text/unicode", data, {});
            if (data.value) {
                data = data.value.QueryInterface(Ci.nsISupportsString);
                url = data.data;
            }
        } catch (ex) {}
        return url;
    },
    openClipboardConfigTab(win, clip = "", copy, url = "about:config") {
        var filter = this.readFromClipboard(win), nowarn = false, pref = url === "about:config" ? "browser.aboutConfig.showWarning" : "general.warnOnAboutConfig";
        if (copy && clip != filter)
            this.clipboardHelp.copyString(clip);
        if (Services.prefs.getBoolPref(pref, true)) {
            Services.prefs.setBoolPref(pref, false);
            nowarn = true;
        }
        var browser = win.gBrowser.getBrowserForTab(win.gBrowser.selectedTab = this.addTab(win, url));
        browser.addEventListener("pageshow", e => {
            var doc = e.target;
            var input = doc && doc.querySelector("input#about-config-search, search-textbox#textbox");
            if (input && filter) {
                input.value = filter;
                input.focus();
                input.dispatchEvent(new doc.defaultView.Event("input", { bubbles: true }));
            }
            if (nowarn)
                win.setTimeout(() => {
                    Services.prefs.setBoolPref(pref, true);
                }, 200);
        }, { once: true });
    },
    openSelectedConfig(win, url, oldwin) {
        var clip = this.readFromClipboard(win);
        win.goDoCommand("cmd_copy");
        win.setTimeout(() => {
            if (!oldwin)
                this.openClipboardConfigTab(win, clip, true, url);
            else
                this.openOldConfigWin(win, clip, true);
        }, 100);
    },
    addTab(win, url, params = {}) {
        params.triggeringPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
        params.index = win.gBrowser.selectedTab._tPos + 1;
        return win.gBrowser.addTab(url, params);
    },
    get configoldurl() {
        delete this.configoldurl;
        var mod = Cc[`@mozilla.org/network/protocol/about;1?what=${aboutoldurl.split(":")[1]}`].getService(Ci.nsIAboutModule);
        var url;
        try {
            url = mod.getChromeURI(Services.io.newURI(aboutoldurl)).spec;
        } catch (e) {
            url = mod.wrappedJSObject.uri?.spec;
        }
        return this.configoldurl = url || aboutoldurl;
    },
    async openOldConfigWin(win, clip = "", copy) {
        var filter, input;
        if (copy) {
            filter = this.readFromClipboard(win);
            if (clip != filter)
                this.clipboardHelp.copyString(clip);
        }
        var type = "Preferences:ConfigManager", id = "config";
        var _win = Services.wm.getMostRecentWindow(type);
        if (!_win) {
            let nowarn = false, pref = "general.warnOnAboutConfig";
            if (copy && Services.prefs.getBoolPref(pref, true)) {
                Services.prefs.setBoolPref(pref, false);
                nowarn = true;
            }
            let url = this.configoldurl;
            let xs = Services.xulStore;
            let sx = xs.getValue(url, id, "screenX");
            let sy = xs.getValue(url, id, "screenY");
            let wh = xs.getValue(url, id, "width");
            let ht = xs.getValue(url, id, "height");
            let sm = xs.getValue(url, id, "sizemode");
            let features = `chrome,dialog=no,resizable,${sx && sy ? `screenX=${sx !== "0" ? sx : "1"},screenY=${sy !== "0" ? sy : "1"}` : "centerscreen"}${wh && ht ? `,width=${wh},height=${ht}` : ""}`;
            _win = win.openDialog(url, type, features);
            await new Promise(resolve => {
                _win.windowRoot.addEventListener("DOMContentLoaded", () => {
                    _win.windowRoot.addEventListener("MozUpdateWindowPos", () => {
                        if (sm === "maximized")
                            _win.maximize();
                    }, { once: true, capture: true });
                    resolve();
                }, { once: true });
            });
            if (copy && nowarn)
                _win.setTimeout(() => {
                    Services.prefs.setBoolPref(pref, true);
                }, 200);
        }
        var doc = _win.document;
        var docEl = doc.documentElement;
        docEl.setAttribute("windowtype", type);
        docEl.id = id;
        docEl.setAttribute("persist", "screenX screenY width height sizemode");
        _win.focus();
        if (!copy || !(input = doc.querySelector("search-textbox#textbox"))) return;
        input.value = filter;
        input.focus();
        input.dispatchEvent(new _win.Event("input", { bubbles: true }));
    },
}) => {
    CustomizableUI.createWidget({
        id: id,
        type: "custom",
        label: label,
        tooltiptext: tooltiptext,
        localized: false,
        defaultArea: CustomizableUI.AREA_NAVBAR,
        onBuild(doc) {
            var win = doc.defaultView;
            var trbn = doc.createXULElement("toolbarbutton");
            trbn.id = id;
            trbn.className = "toolbarbutton-1 chromeclass-toolbar-additional";
            trbn.setAttribute("label", label);
            trbn.setAttribute("context", "");
            trbn.setAttribute("tooltiptext", tooltiptext);
            trbn.style.setProperty("list-style-image", `url("${img}")`, "important");
            trbn.addEventListener("click", e => {
                if (e.button == 0) {
                    if (e.shiftKey)
                        about_config.openOldConfigWin(win);
                    else if (e.getModifierState("Accel"))
                        about_config.openSelectedConfig(win);
                    else
                        win.gBrowser.selectedTab = about_config.addTab(win, "about:config");
                } else if (e.button == 1)
                        about_config.openSelectedConfig(win);
                else if (e.button == 2) {
                    e.preventDefault();
                    e.stopPropagation();
                    if (e.shiftKey)
                        about_config.openSelectedConfig(win, undefined, true);
                    else if (e.getModifierState("Accel"))
                        about_config.openSelectedConfig(win, "about:cfg");
                    else
                        win.gBrowser.selectedTab = about_config.addTab(win, "about:cfg");
                }
            });
            return trbn;
        }
    });
})();

// Этот скрипт можно использовать для создания кнопок с помощью CustomizableUI.createWidget

// Отдельная кнопка about:config с альт.управлением и открытием "about:cfg" от Vitaliy V.
// https://forum.mozilla-russia.org/viewtopic.php?pid=795555#p795555
(async (
id = "ucf-open-about-config",
label = "about:config",
tooltiptext = "	   ЛКМ	: Открыть окно about:cfg\n  Ctrl+ЛКМ	: Искать выделенное / буфер в окне about:cfg\n	   ПКМ 	: Открыть вкладку about:cfg\n  Ctrl+ПКМ	: Искать выделенное / буфер во вкладке about:cfg",
img = "chrome://user_chrome_files/content/vertical_top_bottom_bar/svg/about-config-16.svg",
aboutoldurl = "about:cfg",
about_config = {
    get clipboardHelp() {
        delete this.clipboardHelp;
        return this.clipboardHelp = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
    },
    readFromClipboard(win) {
        var url = "";
        try {
            var trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(Ci.nsITransferable);
            trans.init(win.docShell.QueryInterface(Ci.nsILoadContext));
            trans.addDataFlavor("text/unicode");
            var clipboard = Services.clipboard;
            clipboard.getData(trans, clipboard.kGlobalClipboard);
            var data = {};
            trans.getTransferData("text/unicode", data, {});
            if (data.value) {
                data = data.value.QueryInterface(Ci.nsISupportsString);
                url = data.data;
            }
        } catch (ex) {}
        return url;
    },
    openClipboardConfigTab(win, clip = "", copy, url = "about:config") {
        var filter = this.readFromClipboard(win), nowarn = false, pref = url === "about:config" ? "browser.aboutConfig.showWarning" : "general.warnOnAboutConfig";
        if (copy && clip != filter)
            this.clipboardHelp.copyString(clip);
        if (Services.prefs.getBoolPref(pref, true)) {
            Services.prefs.setBoolPref(pref, false);
            nowarn = true;
        }
        var browser = win.gBrowser.getBrowserForTab(win.gBrowser.selectedTab = this.addTab(win, url));
        browser.addEventListener("pageshow", e => {
            var doc = e.target;
            var input = doc && doc.querySelector("input#about-config-search, search-textbox#textbox");
            if (input && filter) {
                input.value = filter;
                input.focus();
                input.dispatchEvent(new doc.defaultView.Event("input", { bubbles: true }));
            }
            if (nowarn)
                win.setTimeout(() => {
                    Services.prefs.setBoolPref(pref, true);
                }, 200);
        }, { once: true });
    },
    openSelectedConfig(win, url, oldwin) {
        var clip = this.readFromClipboard(win);
        win.goDoCommand("cmd_copy");
        win.setTimeout(() => {
            if (!oldwin)
                this.openClipboardConfigTab(win, clip, true, url);
            else
                this.openOldConfigWin(win, clip, true);
        }, 100);
    },
    addTab(win, url, params = {}) {
        params.triggeringPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
        params.index = win.gBrowser.selectedTab._tPos + 1;
        return win.gBrowser.addTab(url, params);
    },
    get configoldurl() {
        delete this.configoldurl;
        var mod = Cc[`@mozilla.org/network/protocol/about;1?what=${aboutoldurl.split(":")[1]}`].getService(Ci.nsIAboutModule);
        var url;
        try {
            url = mod.getChromeURI(Services.io.newURI(aboutoldurl)).spec;
        } catch (e) {
            url = mod.wrappedJSObject.uri?.spec;
        }
        return this.configoldurl = url || aboutoldurl;
    },
    async openOldConfigWin(win, clip = "", copy) {
        var filter, input;
        if (copy) {
            filter = this.readFromClipboard(win);
            if (clip != filter)
                this.clipboardHelp.copyString(clip);
        }
        var type = "Preferences:ConfigManager", id = "config";
        var _win = Services.wm.getMostRecentWindow(type);
        if (!_win) {
            let nowarn = false, pref = "general.warnOnAboutConfig";
            if (copy && Services.prefs.getBoolPref(pref, true)) {
                Services.prefs.setBoolPref(pref, false);
                nowarn = true;
            }
            let url = this.configoldurl;
            let xs = Services.xulStore;
            let sx = xs.getValue(url, id, "screenX");
            let sy = xs.getValue(url, id, "screenY");
            let wh = xs.getValue(url, id, "width");
            let ht = xs.getValue(url, id, "height");
            let sm = xs.getValue(url, id, "sizemode");
            let features = `chrome,dialog=no,resizable,${sx && sy ? `screenX=${sx !== "0" ? sx : "1"},screenY=${sy !== "0" ? sy : "1"}` : "centerscreen"}${wh && ht ? `,width=${wh},height=${ht}` : ""}`;
            _win = win.openDialog(url, type, features);
            await new Promise(resolve => {
                _win.windowRoot.addEventListener("DOMContentLoaded", () => {
                    _win.windowRoot.addEventListener("MozUpdateWindowPos", () => {
                        if (sm === "maximized")
                            _win.maximize();
                    }, { once: true, capture: true });
                    resolve();
                }, { once: true });
            });
            if (copy && nowarn)
                _win.setTimeout(() => {
                    Services.prefs.setBoolPref(pref, true);
                }, 200);
        }
        var doc = _win.document;
        var docEl = doc.documentElement;
        docEl.setAttribute("windowtype", type);
        docEl.id = id;
        docEl.setAttribute("persist", "screenX screenY width height sizemode");
        _win.focus();
        if (!copy || !(input = doc.querySelector("search-textbox#textbox"))) return;
        input.value = filter;
        input.focus();
        input.dispatchEvent(new _win.Event("input", { bubbles: true }));
    },
}) => {
    CustomizableUI.createWidget({
        id: id,
        type: "custom",
        label: label,
        tooltiptext: tooltiptext,
        localized: false,
        defaultArea: CustomizableUI.AREA_NAVBAR,
        onBuild(doc) {
            var win = doc.defaultView;
            var trbn = doc.createXULElement("toolbarbutton");
            trbn.id = id;
            trbn.className = "toolbarbutton-1 chromeclass-toolbar-additional";
            trbn.setAttribute("label", label);
            trbn.setAttribute("context", "");
            trbn.setAttribute("tooltiptext", tooltiptext);
            trbn.style.setProperty("list-style-image", `url("${img}")`, "important");
            trbn.addEventListener("click", e => {
                if (e.button == 0) {
                    if (e.shiftKey)
                        win.gBrowser.selectedTab = about_config.addTab(win, "about:config");
                    else if (e.getModifierState("Accel"))
                        about_config.openSelectedConfig(win, undefined, true);
                    else
                        about_config.openOldConfigWin(win);
                } else if (e.button == 1)
                        about_config.openSelectedConfig(win);
                else if (e.button == 2) {
                    e.preventDefault();
                    e.stopPropagation();
                    if (e.shiftKey)
                        about_config.openSelectedConfig(win);
                    else if (e.getModifierState("Accel"))
                        about_config.openSelectedConfig(win, "about:cfg");
                    else
                        win.gBrowser.selectedTab = about_config.addTab(win, "about:cfg");
                }
            });
            return trbn;
        }
    });
})();