>>970
なんか哀れだから適当にそれっぽいの作ったよ
気に入らないところあったら自分で手直しして使って
使い方はタイトルバーは非表示で

document.getElementById("tab-view-deck").setAttribute("style","margin-top:29px;");
var titlebarLabel = document.createElement("label")
document.getElementById("titlebar-content").insertBefore(titlebarLabel,document.getElementById("titlebar-spacer"));
titlebarLabel.id = "titlebar-label";
titlebarLabel.setAttribute("value","\u7121\u80fd\u4e59\uff57\uff57\uff57\uff57\uff57\uff57\ud83d\udd95");
titlebarLabel.setAttribute("style","font-size:16px;");
var newButton = document.createElement("toolbarbutton")
document.getElementById("titlebar-buttonbox").insertBefore(newButton,document.getElementById("titlebar-min"));
newButton.id ="toolbox-hidden-button";
newButton.className = "titlebar-button";
newButton.setAttribute("label","\ud83d\udca9");
newButton.setAttribute("tooltiptext","\u3046\u3093\u3053\uff57\uff57\uff57\uff57\uff57\uff57\uff57");
newButton.setAttribute("style","font-size:20px;padding:0 16px 0 0;");
var navBox = document.getElementById("navigator-toolbox")
newButton.onclick = function() navBox.style.display = navBox.style.display == "none"?"":"none";;