var navToTop = -1;
var navigationCenter;

jQuery(document).ready(function() {
	if(document.getElementById('navigationContainer') == null){
		return;
	} else {
		navigationCenter = document.getElementById('navigationContainer').classList;

		window.addEventListener("scroll", function (e) {
			if (window.innerWidth < 960) {
				return;
			}
			if (navToTop == -1) {
				navToTop = document.getElementById('navigationContainer').offsetTop;
				navigationCenter = document.getElementById('navigationContainer').classList;
			}

			if (window.pageYOffset > navToTop) {
				if (!navigationCenter.contains('scrollheader')) {
					navigationCenter.add('scrollheader');
				}
			} else {
				if (navigationCenter.contains('scrollheader')) {
					navigationCenter.remove('scrollheader');
				}
			}
		}, {passive: true});
		window.addEventListener('resize', function () {
			if (window.innerWidth < 960) {
				if (navigationCenter.contains('scrollheader')) {
					navigationCenter.remove('scrollheader');
				}
			}
		}, {passive: true});
	}
});