qbittorrent-webui-cjratliff.com/private/views/aboutToolbar.html

<div class="toolbarTabs">
    <ul id="aboutTabs" class="tab-menu">
        <li id="aboutAboutLink" class="selected"><a>About</a></li>
        <li id="aboutAuthorLink"><a>Authors</a></li>
        <li id="aboutSpecialThanksLink"><a>Special Thanks</a></li>
        <li id="aboutTranslatorsLink"><a>Translators</a></li>
        <li id="aboutLicenseLink"><a>License</a></li>
        <li id="aboutSoftwareUsedLink"><a>Software Used</a></li>
    </ul>
    <div class="clear"></div>
</div>

<script>
    "use strict";

    (function() {
        MochaUI.initializeTabs("aboutTabs");

        $("aboutAboutLink").addEventListener("click", () => {
            $$(".aboutTabContent").addClass("invisible");
            $("aboutAboutContent").removeClass("invisible");
        });

        $("aboutAuthorLink").addEventListener("click", () => {
            $$(".aboutTabContent").addClass("invisible");
            $("aboutAuthorContent").removeClass("invisible");
        });

        $("aboutSpecialThanksLink").addEventListener("click", () => {
            $$(".aboutTabContent").addClass("invisible");
            $("aboutSpecialThanksContent").removeClass("invisible");
        });

        $("aboutTranslatorsLink").addEventListener("click", () => {
            $$(".aboutTabContent").addClass("invisible");
            $("aboutTranslatorsContent").removeClass("invisible");
        });

        $("aboutLicenseLink").addEventListener("click", () => {
            $$(".aboutTabContent").addClass("invisible");
            $("aboutLicenseContent").removeClass("invisible");
        });

        $("aboutSoftwareUsedLink").addEventListener("click", () => {
            $$(".aboutTabContent").addClass("invisible");
            $("aboutSoftwareUsedContent").removeClass("invisible");
        });
    })();
</script>