var articleOffset = 0;

function ListArticle()
{
	// change article
	ChangeArticle(articleOffset + 1);

	return false;
}

function ChangeArticle(newArticleOffset)
{
	// hide old article
	if($('article-item-' + articleOffset)) { $('article-item-' + articleOffset).hide(); }

	// change offset
	articleOffset = newArticleOffset;

	// check offset
	if(articleOffset < 0) { articleOffset = 2; }
	if(articleOffset > 2) { articleOffset = 0; }

	// show new image
	if($('article-item-' + articleOffset)) { $('article-item-' + articleOffset).show(); }

	return false;
}

function ReloadArticle()
{
	ChangeArticle(articleOffset + 1);
	setTimeout('ReloadArticle()', 30000);
}

function ChangeVideo(videoId)
{
	var url = '/video/video-ajax-response.php?id=' + videoId;
	
	new Ajax.Request(url, 
	{
		method: 'get',
		onSuccess: function(xmlhttp) {
			
			var response = xmlhttp.responseText;
			$('hp-tube').innerHTML = response;
		}
	});

	return false;
}

Event.observe(window, 'load', function() { 
	setTimeout('ReloadArticle()', 30000); 
	new Lightbox(); 
});