html 代码:
<div class="feature" id="my-glider">
  <A id="prevlink" onClick="my_glider.previous();return false;" href="#">Previous</A>
  <A id="nextlink" onClick="my_glider.next();return false" href="#">Next</A>
  <div class="scroller">
    <div class="content">
      <div class="section" id="section1"> 
        <ul>
         <li><a href="#" target="_blank"><img alt="纹理一" src="images/cpxq_19.jpg"></a> <br /> 纹理一</li>
         <li><a href="#" target="_blank"><img alt="纹理二" src="images/cpxq_21.jpg"></a>  <br /> 纹理二</li>
         <li><a href="#" target="_blank"><img alt="纹理三" src="images/cpxq_23.jpg"></a>  <br /> 纹理三</li>
         <li><a href="#" target="_blank"><img alt="纹理四" src="images/cpxq_25.jpg"></a>  <br /> 纹理四</li>
        </ul>
      </div>
      <div class="section" id="section2"> 
        <ul>
         <li><a href="#" target="_blank"><img alt="纹理一" src="images/cpxq_19.jpg"></a> <br /> 纹理一</li>
         <li><a href="#" target="_blank"><img alt="纹理二" src="images/cpxq_21.jpg"></a>  <br /> 纹理二</li>
         <li><a href="#" target="_blank"><img alt="纹理三" src="images/cpxq_23.jpg"></a>  <br /> 纹理三</li>
         <li><a href="#" target="_blank"><img alt="纹理四" src="images/cpxq_25.jpg"></a>  <br /> 纹理四</li>
        </ul>
      </div>
    </div>
  </div>
  <script language="javascript" type="text/javascript">
var my_glider = new Glider('my-glider', {duration:0.5});
  </script>
</div>js代码:
Glider = Class.create();
Object.extend(Object.extend(Glider.prototype, Abstract.prototype), {
initialize: function(wrapper, options){
    this.scrolling  = false;
    this.wrapper    = $(wrapper);
    this.scroller   = this.wrapper.down('div.scroller');
    this.sections   = this.wrapper.getElementsBySelector('div.section');
    this.options    = Object.extend({ duration: 1.0, frequency: 3 }, options || {});     this.sections.each( function(section, index) {
      section._index = index;
    });         this.events = {
      click: this.click.bind(this)
    };     this.addObservers();
if(this.options.initialSection) this.moveTo(this.options.initialSection, this.scroller, { duration:this.options.duration });  // initialSection should be the id of the section you want to show up on load
if(this.options.autoGlide) this.start();
  },

  addObservers: function() {
    var controls = this.wrapper.getElementsBySelector('div.controls a');
    controls.invoke('observe', 'click', this.events.click);
  },   click: function(event) {
this.stop();
    var element = Event.findElement(event, 'a');
    if (this.scrolling) this.scrolling.cancel();
    
    this.moveTo(element.href.split("#")[1], this.scroller, { duration:this.options.duration });     
    Event.stop(event);
  }, moveTo: function(element, container, options){
this.current = $(element); Position.prepare();
    var containerOffset = Position.cumulativeOffset(container),
     elementOffset = Position.cumulativeOffset($(element));   this.scrolling  = new Effect.SmoothScroll(container, 
{duration:options.duration, x:(elementOffset[0]-containerOffset[0]), y:(elementOffset[1]-containerOffset[1])});
  return false;
},

  next: function(){
    if (this.current) {
      var currentIndex = this.current._index;
      var nextIndex = (this.sections.length - 1 == currentIndex) ? 0 : currentIndex + 1;      
    } else var nextIndex = 1;    this.moveTo(this.sections[nextIndex], this.scroller, { 
      duration: this.options.duration
    });
  },

  previous: function(){
    if (this.current) {
      var currentIndex = this.current._index;
      var prevIndex = (currentIndex == 0) ? this.sections.length - 1 : 
       currentIndex - 1;
    } else var prevIndex = this.sections.length - 1;
    
    this.moveTo(this.sections[prevIndex], this.scroller, { 
      duration: this.options.duration
    });
  }, stop: function()
{
clearTimeout(this.timer);
},

start: function()
{
this.periodicallyUpdate();
},

periodicallyUpdate: function()

if (this.timer != null) {
clearTimeout(this.timer);
this.next();
}
this.timer = setTimeout(this.periodicallyUpdate.bind(this), this.options.frequency*1000);
}});Effect.SmoothScroll = Class.create();
Object.extend(Object.extend(Effect.SmoothScroll.prototype, Effect.Base.prototype), {
  initialize: function(element) {
    this.element = $(element);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'absolute'
    } , arguments[1] || {}  );
    this.start(options);
  },
  setup: function() {
    if (this.options.continuous && !this.element._ext ) {
      this.element.cleanWhitespace();
      this.element._ext=true;
      this.element.appendChild(this.element.firstChild);
    }
   
    this.originalLeft=this.element.scrollLeft;
    this.originalTop=this.element.scrollTop;
   
    if(this.options.mode == 'absolute') {
      this.options.x -= this.originalLeft;
      this.options.y -= this.originalTop;
    } 
  },
  update: function(position) {   
    this.element.scrollLeft = this.options.x * position + this.originalLeft;
    this.element.scrollTop  = this.options.y * position + this.originalTop;
  }
});
提示错误:Glider未定义