function showCategory(article_id)
	{	
		for (x in catDesc)
		{
			if (x == article_id)
			{
				showBox('catDesc['+x+']');
				YAHOO.util.Dom.addClass('catLink['+x+']', 'subNavLinksSelected');
			}
			else
			{
				hideBox('catDesc['+x+']');
				YAHOO.util.Dom.removeClass('catLink['+x+']', 'subNavLinksSelected');
			}
		}		
	}

	var updateWhatsOnSuccess = function (o)
	{
		document.getElementById('whatsOnContainer').innerHTML = o.responseText;
	}

	function updateWhatsOn(offset)
	{
		var callback =
		{
			success: updateWhatsOnSuccess,
			failure: AJAXFailure
		}	

		var cObj = YAHOO.util.Connect.asyncRequest('GET', '/lib/request/whatsOn.php?offset='+offset, callback,null);
	}