https://secure.kilcu.ie/js/mobile-responsive-nav-menu.js

1;(function($, window, document, undefined) {
2	$.fn.doubleTapToGo = function(params) {
3		if(!('ontouchstart' in window) &&
4			!navigator.msMaxTouchPoints &&
5			!navigator.userAgent.toLowerCase().match( /windows phone os 7/i)) {
6			return false;
7		}
8
9		this.each(function() {
10			var curItem = false;
11
12			$(this).on('click', function(e) {
13				var item = $(this);
14
15				if(item[0] != curItem[0]) {
16					e.preventDefault();
17					curItem = item;
18				}
19			});
20
21			$(document).on('click touchstart MSPointerDown', function(e){
22				var resetItem = true;
23				var parents = $(e.target).parents();
24
25				for(var i = 0; i < parents.length; i++) {
26					if(parents[i] == curItem[0]) {
27						resetItem = false;
28					}
29				}
30
31				if(resetItem) {
32					curItem = false;
33				}
34			});
35		});
36
37		return this;
38	};
39})(jQuery, window, document);