//初始化roll
var rollTime = 0;
var isStop = false;
var rollCount = 5;

// pre_menuId 菜单前缀Id  pre_mainId 内容前缀Id ,total总数 , suf_Id 当前选中的菜单的后缀序号

// 设置轮播Div
function setRollDiv(pre_menuId, pre_mainId, total, suf_Id, current_class, none_class) {
	isStop = true;
	rollTime = suf_Id;
	setDiv(pre_menuId, pre_mainId, total, suf_Id, current_class, none_class);
}

// 非设置轮播Div
function setDiv(pre_menuId, pre_mainId, total, suf_Id, current_class, none_class) {
	for (var i = 0; i < total; i++) {
		var tempMenuId = pre_menuId + "_" + i;
		var tempMainId = pre_mainId + "_" + i;
		document.getElementById(tempMenuId).className = i == suf_Id ? current_class : none_class;
		document.getElementById(tempMainId).style.display = i == suf_Id ? "block" : "none";
	}
}

function changeRoll(pre_menuId, pre_mainId, total, suf_Id, current_class, none_class) {
	if (suf_Id >= total) {
		return;
	}
	setDiv(pre_menuId, pre_mainId, total, suf_Id, current_class, none_class);
}

function autoChangeRoll(pre_menuId, pre_mainId) {
	if (isStop) {
		return;
	}
	rollTime = rollTime + 1;
	if (rollTime == rollCount) {
		rollTime = 0;
	}
	changeRoll(pre_menuId, pre_mainId, rollCount, rollTime, "sibk01c", "sibk01b");
}