多张图片按钮显示功能

项目刚刚用上的，上截图，上代码：

效果图

上代码，很简单的：

 <div class="container" id="idTransformView2">
                            <ul class="slider slider2" id="idSlider2">
                                <li>
                                    <img src="../../file/635261824204618880543541223.jpg" />
                              </li>
                                <li>
                                    <img src="../../file/635261825048944377888869635.jpg" />
                                </li>
                                <li>                 <img src="../../file/6352618253450328921943558610.jpg" />
                                </li>
                            </ul>
                            <ul class="num" id="idNum2">
                                <li>1</li>
                                <li>2</li>
                                <li>3</li>
                            </ul>
                        </div>

 之前少贴了两端代码，今天补上

css ：

.container, .container *
{
    margin: 0;
    padding: 0;
}

.container
{
    width: 428px;
    height: 220px;
    overflow: hidden;
    position: relative;
}

.slider
{
    position: absolute;
}

.slider li
{
    list-style: none;
    display: inline;
}

.slider img
{
    width: 428px;
    height: 220px;
    display: block;
}

.slider2
{
    width: 3000px;
}

.slider2 li
{
    float: left;
}

.num
{
    position: absolute;
    right: 5px;
    bottom: 5px;
}
.num li
{
    float: left;
    color: #FF7300;
    text-align: center;
    line-height: 16px;
    width: 16px;
    height: 16px;
    font-family: Arial;
    font-size: 12px;
    cursor: pointer;
    overflow: hidden;
    margin: 3px 1px;
    border: 1px solid #FF7300;
    background-color: #fff;
}
.num li.on
{
    color: #fff;
    line-height: 21px;
    width: 25px;
    height: 21px;
    font-size: 16px;
    margin: 0 1px;
    border: 0;
    background-color: #FF7300;
    font-weight: bold;
}

 javascript代码：

<script type="text/javascript">
        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;
        }

        var TransformView = Class.create();
        TransformView.prototype = {
            //容器对象,滑动对象,切换参数,切换数量
            initialize: function (container, slider, parameter, count, options) {
                if (parameter <= 0 || count <= 0) return;
                var oContainer = $(container), oSlider = $(slider), oThis = this;

                this.Index = 0; //当前索引

                this._timer = null; //定时器
                this._slider = oSlider; //滑动对象
                this._parameter = parameter; //切换参数
                this._count = count || 0; //切换数量
                this._target = 0; //目标参数

                this.SetOptions(options);

                this.Up = !!this.options.Up;
                this.Step = Math.abs(this.options.Step);
                this.Time = Math.abs(this.options.Time);
                this.Auto = !!this.options.Auto;
                this.Pause = Math.abs(this.options.Pause);
                this.onStart = this.options.onStart;
                this.onFinish = this.options.onFinish;

                oContainer.style.overflow = "hidden";
                oContainer.style.position = "relative";

                oSlider.style.position = "absolute";
                oSlider.style.top = oSlider.style.left = 0;
            },
            //设置默认属性
            SetOptions: function (options) {
                this.options = {//默认值
                    Up: true, //是否向上(否则向左)
                    Step: 5, //滑动变化率
                    Time: 10, //滑动延时
                    Auto: true, //是否自动转换
                    Pause: 2000, //停顿时间(Auto为true时有效)
                    onStart: function () { }, //开始转换时执行
                    onFinish: function () { } //完成转换时执行
                };
                Object.extend(this.options, options || {});
            },
            //开始切换设置
            Start: function () {
                if (this.Index < 0) {
                    this.Index = this._count - 1;
                } else if (this.Index >= this._count) { this.Index = 0; }

                this._target = -1 * this._parameter * this.Index;
                this.onStart();
                this.Move();
            },
            //移动
            Move: function () {
                clearTimeout(this._timer);
                var oThis = this, style = this.Up ? "top" : "left", iNow = parseInt(this._slider.style[style]) || 0, iStep = this.GetStep(this._target, iNow);

                if (iStep != 0) {
                    this._slider.style[style] = (iNow + iStep) + "px";
                    this._timer = setTimeout(function () { oThis.Move(); }, this.Time);
                } else {
                    this._slider.style[style] = this._target + "px";
                    this.onFinish();
                    if (this.Auto) { this._timer = setTimeout(function () { oThis.Index++; oThis.Start(); }, this.Pause); }
                }
            },
            //获取步长
            GetStep: function (iTarget, iNow) {
                var iStep = (iTarget - iNow) / this.Step;
                if (iStep == 0) return 0;
                if (Math.abs(iStep) < 1) return (iStep > 0 ? 1 : -1);
                return iStep;
            },
            //停止
            Stop: function (iTarget, iNow) {
                clearTimeout(this._timer);
                this._slider.style[this.Up ? "top" : "left"] = this._target + "px";
            }
        };

        window.onload = function () {
            function Each(list, fun) {
                for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
            };



            ////////////////////////test2

            var objs2 = $("idNum2").getElementsByTagName("li");

            var tv2 = new TransformView("idTransformView2", "idSlider2", 428, 5, {
                onStart: function () { Each(objs2, function (o, i) { o.className = tv2.Index == i ? "on" : ""; }) }, //按钮样式
                Up: false
            });

            tv2.Start();

            Each(objs2, function (o, i) {
                o.onmouseover = function () {
                    o.className = "on";
                    tv2.Auto = false;
                    tv2.Index = i;
                    tv2.Start();
                }
                o.onmouseout = function () {
                    o.className = "";
                    tv2.Auto = true;
                    tv2.Start();
                }
            })
        }
    </script>