var isIE = (document.all) ? true : false;

					var $ = function (id) {
					return "string" == typeof id ? document.getElementById(id) : id;
					};

					var Class = {
					create: function() {
					return function() {
					this.initialize.apply(this, arguments);
					}
					}
					}

					Object.extend = function(destination, source) {
					for (var property in source) {
					destination[property] = source[property];
					}
					return destination;
					}

					//ie only
					var TransView = Class.create();
					TransView.prototype = {
					initialize: function(arrList, idShow, idList, idText, options) {
					if(!arrList || arrList.length == 0) return;

					var oThis = this, oShow = $(idShow), oList = $(idList), oText = $(idText), img = document.createElement("img"), a = document.createElement("a");

					//初始化显示区域
					img.src = "javascript:;"; a.target = "_blank"; if(isIE){ img.style.filter = "revealTrans(duration=1)"; };
					a.appendChild(img); oShow.appendChild(a);

					this._oList = oList;
					this._oText = oText;
					this._list = arrList;
					this._img = img;
					this._a = a;
					this._timer = null;
					this._index = -1;

					this.SetOptions(options);

					this.Time = Math.abs(this.options.Time);
					this.Auto = !!this.options.Auto;
					this.ClassOn = this.options.ClassOn;
					this.ClassOff = this.options.ClassOff;

					this.Set();
					},
					//设置默认属性
					SetOptions: function(options) {
					this.options = {//默认值
					ClassOn:        "",//显示时样式
					ClassOff:        "",//不显示时样式
					Auto:            true,//是否自动切换
					Time:            3000//切换时间
					};
					Object.extend(this.options, options || {});
					},
					//设置
					Set: function() {
					this.Each(function(list, i){
					var oThis = this, img = document.createElement("img");

					img.src = list["img"];
					img.alt = list["text"];
					img.onmouseover = function(){ oThis.Show(i); };
					img.onmouseout = function(){ if(oThis.Auto){ oThis._timer = setTimeout(function(){ oThis.Run(); }, oThis.Time); } };

					this._list[i]["obj"] = img;

					//这里封装的不好
					this._oList.appendChild(img);
					});

					this.Run();
					},
					//显示
					Show: function(i) {
					this.Stop();

					if(i < 0 || i >= this._list.length) i = 0;

    if(isIE){
        this._img.filters.revealTrans.Transition = Math.floor(Math.random() * 25);
        this._img.filters.revealTrans.apply();
        this._img.filters.revealTrans.play();
    }
    
    this._img.src = this._list[i]["img"];
    this._img.alt = this._list[i]["text"];
    
    if(!this._list[i]["url"]){
        this._oText.innerHTML = this._list[i]["text"];
        this._a.removeAttribute("href");
    } else {
        this._oText.innerHTML= "<a href='" + this._list[i]["url"] + "' target='_blank'>" + this._list[i]["text"] + "</a>";
					this._a.href = this._list[i]["url"];
					}

					if(this._index >= 0) this._list[this._index]["obj"].className = this.ClassOff;
					this._list[i]["obj"].className = this.ClassOn;
					this._index = i;
					},
					//开始
					Run: function() {
					this.Show(this._index + 1);
					if(this.Auto){ var oThis = this; this._timer = setTimeout(function(){ oThis.Run(); }, oThis.Time); }
					},
					//停止
					Stop: function() {
					clearTimeout(this._timer);
					},
					//
					Each:function(fun) {
					for (var i = 0, len = this._list.length; i < len; i++)
        fun.call(this, this._list[i], i);
  },
  //添加
  Add:function(img, text, url) {
    this.Stop();
    var len = this._list.length;
    this._list[len] = {'img': img, 'text': text, 'url': url }
    this._oList.innerHTML = "";
    
    this.Set();
  },
  //
  Delete:function(index) {
    index--;
    if(index < 0 || index > this._list.length) return;
    
    this.Stop();
    var _arr = [];
    var m =0;
    
    this.Each(function(list, i){ if(i != index)    _arr[m++] = list; });
    this._list = _arr;
    this._oList.innerHTML = "";
    
    this.Set();
  }
};