var aN = 1;

$().ready(function() {
	StartAutoSelect();
});

function StopAutoSelect() {
	clearInterval(document.intervalID);
}

function StartAutoSelect() {
	clearInterval(document.intervalID);
	document.intervalID = setInterval(AutoSelect, 5000);
}

function AutoSelect() {
	showNews(aN);
}

function showNews(k) {
	$('#nav li').each( function() {
		$(this).removeClass('selected');
	}); 
	$('#hnews-'+k).addClass('selected');
	
	var html = $('.ln-'+k).html();
	$('#mainNews').html('');
	$('#mainNews').html(html);
	
	if ( k == 3 )
		aN = 0;
	else
		aN = k + 1;
}