https://pizzacityusa.com/wp-content/themes/stellarestaurant/dist/js/navigation.js?ver=20151215

1/**
2 * File navigation.js.
3 *
4 * Handles toggling the navigation menu for small screens.
5 */
6function mobileMenuOpen() {
7    //document.getElementById("mobileNav").classList.toggle("showMenu");
8 	document.getElementById('hamburglar').classList.toggle('is-active');
9	document.getElementById('mobile-menu').classList.toggle('is-active');
10	document.getElementById('masthead').classList.toggle('is-active');
11	
12	var x = document.getElementById('hamburglar').getAttribute('aria-expanded'); 
13  		if (x === 'false') 
14  		{
15  		x = 'true';
16  		} else {
17  		x = 'false';
18  		}
19  		document.getElementById('hamburglar').setAttribute('aria-expanded', x);
20	
21	var y = document.getElementById('mobile-menu').getAttribute('aria-expanded'); 
22  		if (y === 'false') 
23  		{
24  		y = 'true';
25  		} else {
26  		y = 'false';
27  		}
28  		document.getElementById('mobile-menu').setAttribute('aria-expanded', y);
29	
30	
31}