$(document).ready(function(){
		var chAtual = 0;
		var chProx = 1;
		var chTotal = 0;
		var stopShow = false;
		$('.tv ul li').each(function() {
			if($(this).attr('id') == 'ch0') $(this).show();
			else $(this).hide();
			chTotal++;
		});
		if(chTotal < 2){
			$('#seta-ant').css('display','none');
			$('#seta-prox').css('display','none');
		}
		var chAnt = chTotal-1;
		var mudaTudo = function(id){
			$('.tv li').each(function(i) {
				if($(this).attr('id') == 'ch'+id && !stopShow){ 
					$(this).fadeIn('fast');
					chAtual = i;
					if(i == (chTotal-1)) chProx = 0;
					else chProx = chAtual+1;
					if(i == 0) chAnt = chTotal-1;
					else chAnt = chAtual-1;
					stopShow = true;
				} else $(this).hide(); //$(this).fadeOut('fast');
			});
		}
		
		var tvTimer = function() {
			stopShow = false;
			mudaTudo(chProx);
		};
	
		var intervalo;
		if(chTotal > 1) {
			intervalo = setInterval(function() {
				tvTimer();
			}, 5000);
		}
		
		$('.tv #seta-ant').click(function(){
//			alert('chAnt: '+chAnt+', chProx: '+chProx)
			clearInterval(intervalo);
			mudaTudo(chAnt);
			stopShow = false;
			intervalo = setInterval(function() {
				tvTimer();
			}, 5000);
		});
		
		$('.tv #seta-prox').click(function(){
//			alert('chAnt: '+chAnt+', chProx: '+chProx)
			clearInterval(intervalo);
			mudaTudo(chProx);
			stopShow = false;
			intervalo = setInterval(function() {
				tvTimer();
			}, 6000);
		});
	});