MediaWiki:Common.js/MostRecentPanel.js

$(document).ready(function {    $('.portable-infobox .pi-section-tab.pi-section-active, .portable-infobox .pi-section-content.pi-section-active').removeClass('pi-section-active')    $('.portable-infobox .pi-section-tab:last-child, .portable-infobox .pi-section-content:last-child').addClass('pi-section-active') });