setInterval(function() { flip(); }, 1400);
	
		function flip() {
			
			var currentElements	=  [];
			var hiddenElements	=  [];
			
			$('.photoList ul li').each(function() { currentElements.push($(this)); });
			$('.hiddenList ul li').each(function() { hiddenElements.push($(this)); });
						
			var $randCurrent	= $(currentElements[Math.floor(Math.random() * currentElements.length)]);
			var $randHidden		= $(hiddenElements[Math.floor(Math.random() * hiddenElements.length)]);
		
			$randHidden.after($randCurrent.clone()).remove();
			$randCurrent.after($randHidden.clone()).remove();
			
		}