var node = document.createElement("button");
            var svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
            var path = document.createElementNS("http://www.w3.org/2000/svg", "path");
            node.classList.add('button-toolbar');
            node.id = "vivaldiToggleSidebar";
            node.setAttribute("title", "Panel Toggle");
            node.setAttribute("tabindex", "-1");
            svg.setAttributeNS(null, "width", "4");
            svg.setAttributeNS(null, "height", "16");
            svg.setAttributeNS(null, "viewBox", "0 0 4 16");
            path.style = "d: path('M2 4c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zm0 6c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zm0 6c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z')";
            bookmarkbar.appendChild(node);
            node.appendChild(svg);
            svg.appendChild(path);