WordPress/wp-admin/js/accordion.min.js

!function(a){function b(){d.removeClass("top bottom"),d.filter(":visible").first().addClass("top"),d.filter(":visible").last().addClass("bottom").find(e).addClass("bottom")}function c(a){var c=a.closest(".accordion-section"),d=c.closest(".accordion-container").find(".open"),f=c.find(e);c.hasClass("cannot-expand")||(c.hasClass("open")?(c.toggleClass("open"),f.toggle(!0).slideToggle(150)):(d.removeClass("open"),d.find(e).show().slideUp(150),f.toggle(!1).slideToggle(150),c.toggleClass("open")),b())}a(document).ready(function(){a(".accordion-container").on("click keydown",".accordion-section-title",function(b){("keydown"!==b.type||13===b.which)&&(b.preventDefault(),c(a(this)))}),a(".hide-postbox-tog").click(function(){b()})});var d=a(".accordion-container li.accordion-section"),e=a(".accordion-section-content");b()}(jQuery);