http://www.orenlavie.com/wp-content/themes/nexus/js/custom/custom-responsive-nav.js?ver=6.9.9

1jQuery(document).ready(function() {	
2	// Responsive Navigation 
3
4	var header = jQuery("#header"),
5		nava = jQuery(".nav-btn"),
6		navb = jQuery("#navigation"),
7		wind = jQuery(window).width(),
8		winh;
9		
10		if(wind < 1007) {
11			 winh = jQuery(window).outerHeight()
12		}
13		else {
14			winh = jQuery(window).outerHeight() -jQuery('#header').outerHeight()
15		}
16
17	// Add classes		
18    jQuery(window).resize(function () {
19		var nava = jQuery(".nav-btn"),
20			navb = jQuery("#navigation"),
21			wind = jQuery(window).width(),
22			winh;
23
24		if(wind < 1007) {
25			 winh = jQuery(window).outerHeight()
26		}
27		else {
28			winh = jQuery(window).outerHeight() -jQuery('#header').outerHeight()
29		}
30		
31		if (wind > 1006) {
32			navb.addClass("desktop");
33			navb.removeClass("mobile")
34		}
35		if (wind < 1007) {
36			navb.addClass("mobile");
37			navb.removeClass("desktop")
38		}
39
40		// Nav CSS adjustment for mobile
41		if (wind < 1007) {
42		jQuery('#navigation.mobile').css({'max-height': winh-150, 'overflow-y': 'scroll'});
43		}
44		if (wind > 1006) {
45			jQuery('#navigation.desktop').css({'overflow': 'visible'});
46		}		
47
48    });
49			
50		if (wind > 1006) {
51			navb.addClass("desktop");
52			navb.removeClass("mobile")
53		}
54		if (wind < 1007) {
55			navb.addClass("mobile");
56			navb.removeClass("desktop")
57		}	
58		// Nav CSS adjustment for mobile
59		if (wind < 1007) {
60		jQuery('#navigation.mobile').css({'max-height': winh-150, 'overflow-y': 'scroll'});
61		}
62		if (wind > 1006) {
63			jQuery('#navigation.desktop').css({'overflow': 'visible'});
64		}				
65
66	// Click Tweak
67	nava.click(function () {
68		if (navb.is(":visible")) {
69			navb.slideUp();
70			setTimeout(function(){
71				header.removeClass('navigation-dropdown');
72			}, 200);
73		} else {
74			header.addClass('navigation-dropdown');
75			navb.slideDown();
76		}
77	});	
78});