onclick-aria.js

var $this = $j(this);
var $next = $this.next();

$this.on('click', function () {
    $this.toggleClass('active')
        .attr('aria-expanded', !$this.attr('aria-expanded') === 'true');

    $next().toggleClass('no-display')
        .attr('aria-hidden', !$next.attr('aria-hidden') === 'true');
});