var performerId = 2;

$(function(){
	setInterval(changePerformer, 10000); 
});

function changePerformer(){	
	var performerLocation = $('#artistContainer div.performer');
	
	performerLocation.each(function(index){
		if( $(this).attr("performerId") == performerId )
			$(this).fadeIn();
		else{
			$(this).fadeOut();
		}
	});
	if(performerId == 1)
		performerId ++;
	else
		performerId--;	
}