/* Carousel */
var articleOffset = 0;

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

	// change offset
	articleOffset = newArticleOffset;

  var celkem = $('article-item-count').value;  
       		 	
	// check offset
	if(articleOffset < 0) { articleOffset = celkem-1; }
	if(articleOffset >= celkem) { articleOffset = 0; }

	// show new article
	if($('article-item-' + articleOffset)) { $('article-item-' + articleOffset).show(); }
	//if($('article-list-' + articleOffset)) { $('article-list-' + articleOffset).addClassName('active'); }
	if($('nav' + articleOffset)) { $('nav' + articleOffset).addClassName('active'); }

	return false;
}

function ReloadArticle()
{
	ChangeArticle(articleOffset + 1);
	setTimeout('ReloadArticle()', 12000);
}

Event.observe(window, 'load', function() { 
	setTimeout('ReloadArticle()', 12000);
});