闭包实现单例气泡提示

var kcbplugs = kcbplugs || {};
kcbplugs.msg = {};

// 弹出层封装类
kcbplugs.msg.msgManager = function() {
	var msgStack = [];

	// 构建div弹出层
	var divDom = $("<div></div>").appendTo(document.body);
	divDom.css("top", 60);

	// 当前是否显示
	var isshow = false;

	// 鼠标是否移入
	var ishand = false;
	divDom.bind("mouseover", function() {
		ishand = true;
	}).bind("mouseout", function() {
		ishand = false;
	});

	return {
		setTop : function(_top) {
			divDom.css("top", _top);
		},
		getMsg : function() {
			return msgStack;
		},
		addMsg : function(msg) {
			msgStack.push(msg);
			if (!isshow) {
				this.showDiv();
			}
		},
		showDiv : function() {
			var me = this;
			if (msgStack.length > 0) {
				isshow = true;

				var msgObj = msgStack[0];

				divDom.removeClass();
				divDom.addClass("message");

				var speed = 2000;
				var delay = 3000;

				if (typeof (msgObj) == 'string') {
					divDom.html(msgObj);
				} else {
					divDom.html(msgObj.text || "");
					divDom.addClass(msgObj.style || "");
					speed = msgObj.speed || 2000;
					delay = msgObj.delay || 3000;
				}

				var _width = parseInt(divDom.css("width").replace("px"));
				var _left = ($browser.getWindowWidth() - _width) / 2;
				divDom.css("left", _left);

				divDom.slideDown(speed).delay(delay).slideDown(1, function() {
					if (!ishand) {
						divDom.slideUp(speed, function() {
							msgStack.shift();
							me.showDiv();
						});
					} else {
						me.showDiv();
					}
				});
			} else {
				isshow = false;
			}
		}
	}
}

var kcbmsg = kcbplugs.msg.msgManager();
/**
 * .message.red{background:#ff5f6a;border: 1px solid #9F2735;}
.message.blue{background:#419AF7;border: 1px solid #2B79C8;}
.message{opacity:0.9;cursor:pointer;font-size:12px;line-height:30px;padding: 0 35px;color:#FFF;background:#3F9A26;border: 1px solid #1C7101;border-top:none;position:absolute;display:none;z-index:200;}
.message a{font-weight:bold;text-decoration:underline;color:#FFF}
 */