jQuery(function($) {
	$(function () {
		$('div.ndcauhoi:first').show();
		
		var idhientai = document.getElementsByClassName("ndcauhoi")[0].id;
		var start = parseInt(idhientai.slice(4));
		var x = document.getElementsByClassName("ndcauhoi").length;
		
		
		$(".clickcauhoi").click(function () {
			$(this).addClass('active').siblings().removeClass('active');
			$('.ndcauhoi').hide();
			$('#' + $(this).data('id')).show();		
			idhientai = $(this).data('id');
		});
		
		$(".cautruoc").click(function () {		
			$(this).addClass('active').siblings().removeClass('active');
			$('.ndcauhoi').hide();
			var i = parseInt(idhientai.slice(4));		
			var a = i - 1;
			if (a == start - 1){
				a = start + x - 1;
			}		
			idhientai = "data" + a;
			showhientai = "#show" + a;
			var idtruoc = "#data" + a;
			$('.btn-cauhoi').removeClass('active');
			$(showhientai).addClass('active');
			$(idtruoc).show();
		});
		$(".causau").click(function () {		
			$(this).addClass('active').siblings().removeClass('active');
			$('.ndcauhoi').hide();
			var i = parseInt(idhientai.slice(4));		
			var a = i + 1;
			if (a == x + start){
				a = start;
			}		
			idhientai = "data" + a;
			showhientai = "#show" + a;
			var idsau = "#data" + a;	
			$('.btn-cauhoi').removeClass('active');
			$(showhientai).addClass('active');			
			$(idsau).show();
		});
		
		/*
		$("#nopbai").click(function () {
					return confirm("Mệt rồi nha bạn");
				});
		*/	
		$(window).bind('scroll', function () {
			var menu = $('.menu');
			var thoigian = $('.thoigian');
		});
		
		$('.cautraloi input').click(function() {
			var id = $(this).data('question');
			$('#show' + id).addClass('has_click');
		});

	});
});