$(document).ready(Heil2All);

function Heil2All() {
	$('.HeaderNavItemWrap').mouseover(OverEvent);
	$('.HeaderNavItemWrap').mouseout(OutEvent);
}

function OverEvent() {
	$('ul', this).css('display', 'block');
}

function OutEvent() {
	$('ul', this).css('display', 'none');
}