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//var ww = document.body.clientWidth;
var ww = $(window).width();
$(document).ready(function() {
	$(".nav li a").each(function() {
		if ($(this).next().length > 0) {
			$(this).addClass("parent");
		};
	})
	
	$(".toggleMenu").click(function(e) {
		e.preventDefault();
		
		$(this).toggleClass("active");
		$(".nav").slideToggle(500);
		
	});
	
	adjustMenu();
	
	function resize()
	{
		var heights = window.innerHeight;		
		// var $headHeight = $("header").height();
		var footerHeight = $("footer").height();
		// var $totalHeight = +$headHeight + +$innerBannerHeight;
		 var contentHeight= +heights - +footerHeight - 34;
		 $(".inner_contents").css('min-height',contentHeight+"px");		
	}
	resize();
	window.onresize = function() {
		resize();
	};

})

$(window).bind('resize orientationchange', function() {
	ww = document.body.clientWidth;
	adjustMenu();
});

var adjustMenu = function() {
	if (ww < 991) {

$(".toggleMenu").css("display", "inline-block");
		if (!$(".toggleMenu").hasClass("active")) {
			$(".nav").hide();
		} else {
			//$(".nav").show();
		}
		$(".nav li").unbind('mouseenter mouseleave');
		$(".nav li a.parent").unbind('click').bind('click', function(e) {
			// must be attached to anchor element to prevent bubbling
			e.preventDefault();
	
			$(this).parent("li").toggleClass("hover");
			
		});
	} 
	else if (ww >= 991) {
		$(".toggleMenu").css("display", "none");
		$(".nav").show();
		$(".nav li").removeClass("hover");
		$(".nav li a").unbind('click');
		$(".nav li").unbind('mouseenter mouseleave').bind('mouseenter mouseleave', function() {
		 	// must be attached to li so that mouseleave is not triggered when hover over submenu
		
		 	$(this).toggleClass('hover');
		});
	}
}

Editing File: script.js