var photo_list = 
{
	"prizes":
	[
		{"value":"猿人气球(吸收伤害)X1组(每组5个)", "url":"images/award/img-award1.gif"},
		{"value":"瞬间回程卷轴X1组(每组11个)", "url":"images/award/img-award2.gif"},
		{"value":"洛克气球(增加伤害)X1组(每组5个)", "url":"images/award/img-award3.gif"},
		{"value":"紫色棒棒糖X1组(每组50个)", "url":"images/award/img-award4.gif"},
		{"value":"命中之披风X1组(每组10个)", "url":"images/award/img-award5.gif"},
		{"value":"躲闪之披风X1组(每组10个)", "url":"images/award/img-award6.gif"},
		{"value":"敏捷之披风X1组(每组10个)", "url":"images/award/img-award7.gif"},
		{"value":"潘多拉箱子X1组(每组10个)", "url":"images/award/img-award8.gif"}
	]
};
var photo_index = 0;
var timer;

//user_info 存放剩余抽奖次数、获得奖品名称、msg 
var user_info;

function update_left_times(left_times)
{
	document.getElementById("trophy_left_times").innerText = left_times;
	document.getElementById("trophy_left_times").textContent = left_times;
}

function Changing()
{
	var len = photo_list.prizes.length;
	document.getElementById('prize_img').src = photo_list.prizes[photo_index%len].url;
	photo_index = photo_index+1;
	timer = setTimeout("Changing()",150);
}

function stopChange()
{
	clearTimeout(timer);
	for (i in photo_list.prizes) 
	{
		var prize = photo_list.prizes[i];
		if (user_info.win === prize.value)
		{
			document.getElementById('prize_img').src = prize.url;
			$("#show_prize").append('<span>恭喜您，您获得了'+prize.value+'</span>');
			update_left_times(user_info.trophy_left_times);
			$("#lucky_draw").one("click", click_change);
			photo_index = 0;
			break;
		}
	
	}
}

function click_change()
{
	$.post("/cbsite/srocn_act_2/lucky_draw_post/", function(r){
			user_info = eval("("+r+")");
			if (user_info.trophy_left_times === undefined)
			{
				alert(user_info.msg);
				$("#lucky_draw").one("click", click_change);
			}
			else {
				if (user_info.win === "")
				{
					alert(user_info.msg);
					$("#lucky_draw").one("click", click_change);
				}
				else {
					$("#show_prize > span").remove();
					Changing();
					setTimeout("stopChange()", 3000);
				}
			}
		});
}