function getArticlesExtra(filtro,capa,limit)
{
	var url = '/ajax/ajaxGetExtraArticles/'+filtro+'/'+capa+'/'+limit;
	
	new Ajax.Request( url , 
		{
			method: 'get',
			encoding: 'utf-8',
			 
			onSuccess: function(transport) 
			{
				var response = transport.responseText;
							
				if (response)
				{
					$(capa).innerHTML = response;
				}
			}
		}
	);
}