$(document).ready(function() {
	middenUitlijnen();	
	
	$('a:hover img').parent(function() 
	{
		$(this).css('border', '0');
	});
});

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

function middenUitlijnen() {
	var content = $('#content').height();
	var nav = $('#nav').height();
	var logo = $('#logo').height();
	var window = $(window).height();
	var header = $('#header').height();
	
	var margin = (window - content - nav - logo) / 2;
	margin = margin - header;
	
	$('#header').css({
		'margin-bottom' : margin + 'px'
	});
}