jQuery detect header scroll, and close header dropdown by click outside

jquery-header-and-mobile.js

var $document = jQuery(document),
	$window = jQuery(window),
	$header = jQuery('header.header-hc2'),
	$container = $header.children('.container'),
	$secondNav = $header.children('.secondary-navigation'),
	$secondContainer = $secondNav.children('.container'),
	onMobile = false,
	scrollTop = 0,
	scrollTimeout = false,
	headerStatus = false;

function HC2toggleHeader() {
	if ($document.scrollTop() >= 400) {
		$container.slideUp('fast');
		$secondNav.addClass('second-nav-slideUp');			
	} else {
		$container.slideDown('fast');
		$secondNav.removeClass('second-nav-slideUp');
	}
}

function HC2toggleHeader2() {

	// if the timer has done
	if(scrollTimeout) return false

	scrollTimeout = setTimeout(function(){
		var newScrollTop = $document.scrollTop();
		var range = newScrollTop - scrollTop;
		scrollTop = newScrollTop;

			if(range >= 100 && headerStatus != 'slideUp') {
				$container.slideUp('fast');
				$secondNav.addClass('second-nav-slideUp');
				headerStatus = 'slideUp';
			}
			else if(range <= -100 && headerStatus != 'slideDown') {
				$container.slideDown('fast');
	    		$secondNav.removeClass('second-nav-slideUp');
	    		headerStatus = 'slideDown';
			}

		scrollTimeout = false;

	}, 250);
}

function HC2setMobile() {
	var width = $window.width();

	if(width <= 768) {
		$header.addClass('hc2-header-mobile');
		onMobile = true;
	}
	else {
		$header.removeClass('hc2-header-mobile');
		$secondContainer.children('ul.menu').css('display','');
		onMobile = false;
	}
}

$document.scroll(function() {
	HC2toggleHeader2();
});

$window.resize(function() {
	HC2setMobile();
});

$document.ready(function($){
	HC2toggleHeader();
	HC2setMobile();

	$secondContainer.children('.navigation-title').toggle(function(){
		if(onMobile) {
			$secondContainer.children('ul.menu').slideDown();
			$(this).addClass('hc2-menu-open');
		}			
	}, function() {
		if(onMobile) {
			$secondContainer.children('ul.menu').slideUp();
			$(this).removeClass('hc2-menu-open');
		}
	});
})

$window.click(function() {
	//Hide the menus if visible
	if(onMobile && $secondContainer.children('.navigation-title').hasClass('hc2-menu-open')) {
		$secondContainer.children('.navigation-title').trigger('click');
	}		
});

$secondContainer.children('ul.menu').click(function(event){
	event.stopPropagation();
});