https://wp.theater/wp-content/themes/kelly/js/navigation.js?ver=20120206

1/**
2 * navigation.js
3 *
4 * Handles toggling the navigation menu for small screens.
5 */
6( function() {
7	var container, button, menu;
8
9	container = document.getElementById( 'site-navigation' );
10	if ( ! container )
11		return;
12
13	button = container.getElementsByTagName( 'h1' )[0];
14	if ( 'undefined' === typeof button )
15		return;
16
17	menu = container.getElementsByTagName( 'ul' )[0];
18
19	// Hide menu toggle button if menu is empty and return early.
20	if ( 'undefined' === typeof menu ) {
21		button.style.display = 'none';
22		return;
23	}
24
25	if ( -1 === menu.className.indexOf( 'nav-menu' ) )
26		menu.className += ' nav-menu';
27
28	button.onclick = function() {
29		if ( -1 !== container.className.indexOf( 'toggled' ) )
30			container.className = container.className.replace( ' toggled', '' );
31		else
32			container.className += ' toggled';
33	};
34
35	// Fix child menus for touch devices.
36	function fixMenuTouchTaps( container ) {
37		var touchStartFn,
38		    parentLink = container.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );
39
40		if ( 'ontouchstart' in window ) {
41			touchStartFn = function( e ) {
42				var menuItem = this.parentNode;
43
44				if ( ! menuItem.classList.contains( 'focus' ) ) {
45					e.preventDefault();
46					for( var i = 0; i < menuItem.parentNode.children.length; ++i ) {
47						if ( menuItem === menuItem.parentNode.children[i] ) {
48							continue;
49						}
50						menuItem.parentNode.children[i].classList.remove( 'focus' );
51					}
52					menuItem.classList.add( 'focus' );
53				} else {
54					menuItem.classList.remove( 'focus' );
55				}
56			};
57
58			for ( var i = 0; i < parentLink.length; ++i ) {
59				parentLink[i].addEventListener( 'touchstart', touchStartFn, false )
60			}
61		}
62	}
63
64	fixMenuTouchTaps( container );
65} )();