兼容各類瀏覽器的上下滾動代碼

直接切入正題

紅色的表示爲要注意統一的。

藍色是表示要更改的。

內容高度必定要大於box1的高度不然不會滾動，本框架用的是phpcms,你們可根據本身的框架更改循環。

演示地址http://www.er-china.com/index.php?m=content&c=index&a=lists&catid=789

<script type="text/javascript">
var $1 = 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;
}

function addEventHandler(oTarget, sEventType, fnHandler) {
    if (oTarget.addEventListener) {
        oTarget.addEventListener(sEventType, fnHandler, false);
    } else if (oTarget.attachEvent) {
        oTarget.attachEvent("on" + sEventType, fnHandler);
    } else {
        oTarget["on" + sEventType] = fnHandler;
    }
};

var Scroller = Class.create();
Scroller.prototype = {
  initialize: function(idScroller, idScrollMid, options) {
    var oThis = this, oScroller = $1(idScroller), oScrollMid = $1(idScrollMid);
   
    this.SetOptions(options);
    this.Side = this.options.Side || ["up"];//方向
    this.scroller = oScroller;            //對象
    this.speed = this.options.Speed;    //速度
    this.timer = null;                    //時間
    this.pauseHeight = 0;                //定高
    this.pauseWidth = 0;                //定寬
    this.pause = 0;                        //定高(寬)
    this.side = 0;                        //參數
   
    //用於上下滾動
    this.heightScroller = parseInt(oScroller.style.height) || oScroller.offsetHeight;
    this.heightList = oScrollMid.offsetHeight;
   
 
 
    //js取不到css設置的height和width
   
    oScroller.style.overflow = "hidden";
    oScrollMid.appendChild(oScrollMid.cloneNode(true));
    oScrollMid.appendChild(oScrollMid.cloneNode(true));
   
    addEventHandler(oScroller, "mouseover", function() { oThis.Stop(); });
    addEventHandler(oScroller, "mouseout", function() { oThis.Start(); });
   
    this.Start();
  },
  //設置默認屬性
  SetOptions: function(options) {
    this.options = {//默認值
      Step:            1,//每次變化的px量
      Speed:        20,//速度(越大越慢)
      Side:            ["up"],//滾動方向:"up"是上，"down"是下，"left"是左，"right"是右
      PauseHeight:    0,//隔多高停一次
      PauseWidth:    0,//隔多寬停一次
      //當上下和左右一塊兒使用時必須設置PauseHeight和PauseWidth來設置轉向位置
      PauseStep:    0//停頓時間(PauseHeight或PauseWidth大於0該參數纔有效)
    };
    Object.extend(this.options, options || {});
  },
  //轉向
  Turn: function() {
    //經過設置方向數組的排列來轉向
    this.Side.push(this.Side.shift().toLowerCase());
  },
  //上下滾動
  ScrollUpDown: function() {
    this.pause = this.pauseHeight;
    this.scroller.scrollTop = this.GetScroll(this.scroller.scrollTop, this.heightScroller, this.heightList, this.options.PauseHeight);
    this.pauseHeight = this.pause;
   
    var oThis = this;
    this.timer = window.setTimeout(function(){ oThis.Start(); }, this.speed);
  },

 
  //獲取設置滾動數據
  GetScroll: function(iScroll, iScroller, iList, iPause) {
    var iStep = this.options.Step * this.side;
   
    if(this.side > 0){
        if(iScroll >= (iList * 2 - iScroller)){ iScroll -= iList; }
    } else {
        if(iScroll <= 0){ iScroll += iList; }
    }
   
    this.speed = this.options.Speed;
    if(iPause > 0){
        if(Math.abs(this.pause) >= iPause){
            this.speed = this.options.PauseStep; this.pause = iStep = 0; this.Turn();
        } else {
            this.pause += iStep;
        }
    }
   
    return (iScroll + iStep);
  },
  //開始
  Start: function() {   
    //方向設置
    switch (this.Side[0].toLowerCase()) {

        case "down" :
            if(this.heightList < this.heightScroller) return;
            this.side = -1;
            this.ScrollUpDown();
            break;
        case "up" :
        default :
            if(this.heightList < this.heightScroller) return;
            this.side = 1;
            this.ScrollUpDown();
    }
  },
  //中止
  Stop: function() {
    clearTimeout(this.timer);
  }
};

window.onload = function(){
    new Scroller("zsbox", "box1",{ Side:["up","left"], PauseHeight:50, PauseWidth:400 });
}
</script>

<div id="zsbox"  style="width:700px; height:288px; overflow:hidden;">
     <div id="box1" >
   <table width="100%" border="0" cellspacing="0" cellpadding="0">
   <tr>
   <?php $i=0;?>
   {pc:content action="lists" catid="819" start="0" thumb="1" num="40" order="id asc,listorder asc,updatetime desc"}
   {loop $data $v}
   <td width="19%" align="center">
        <dl class="qyzs">
       <dt style="border-bottom:#319482 1px solid; border-right:#319482 1px dashed; text-align:center;"><a href="{$v[url]}" title={$v[title]} target="_blank"><img src="{thumb($v[thumb],140,65)}" style="width:140px;height:65px" /></a></dt>
       </dl>
   </td>
   {if $n%4==0}</tr><tr>{/if}
   <?php $i++?>
   {/loop}
   {/pc}   
   <?php
    //虛位以待
    $ii=(4-$i%4) ;
    for($y=0;$y<$ii;$y++){ ?>
    <td width="19%" align="center">
        <dl class="qyzs">
       <dt style="border-bottom:#319482 1px solid; border-right:#319482 1px dashed; text-align:center;"><a href="#" title="虛位以待" target="_blank"><img src="http://www.er-china.com/uploadfile/2013/0730/20130730100812717.jpg" style="width:140px;height:65px" /></a></dt>
       </dl>
    </td>
    
   <?php 
    }
   
   ?>
   </tr>
   
   </table>   
      </div>
  
      <div id="box2"></div>  <!-- <img src="/tpl/03wrcd/zhanlan/img/zhanlan0.gif">-->    </div>