[romkhram@gmail.com]

и тоже самое без jQuery

var lastScrollTop = 0;
window.onscroll = onScroll;

function onScroll (e) {
	var top = window.pageYOffset;
	if (lastScrollTop > top) {
		console.log('top');

	} else if (lastScrollTop < top) {
		console.log('down');
	}
	lastScrollTop = top;
}