JavaScript 无缝八向滚动(兼容ie/ff)

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< meta  http-equiv ="Content-Type"  content ="text/html; charset=gb2312"   />
< title > JavaScript 无缝八向滚动(兼容ie/ff) </ title >
</ head >
< body >
< 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;
}

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 oScroll = this, oScroller = $(idScroller), oScrollMid = $(idScrollMid);
    
    this.SetOptions(options);
    this.scroller = oScroller;            //对象
    this.timer = null;                    //时间
    this.Side = [];                        //方向
    this.side = 0;                        //参数
    
    //方向设置
    switch (this.options.Side.toLowerCase()) {
        case "right-down" :
            this.Side = ["right", "down"];
            break;
        case "right-up" :
            this.Side = ["right", "up"];
            break;
        case "left-down" :
            this.Side = ["left", "down"];
            break;
        case "left-up" :
            this.Side = ["left", "up"];
            break;
        case "right" :
            this.Side = ["right"];
            break;
        case "left" :
            this.Side = ["left"];
            break;
        case "down" :
            this.Side = ["down"];
            break;
        case "up" :
        default :
            this.Side = ["up"];
    }
    
    //用于上下滚动
    this.heightScroller = parseInt(oScroller.style.height) || oScroller.offsetHeight;
    this.heightList = oScrollMid.offsetHeight;
    
    //用于左右滚动
    this.widthScroller = parseInt(oScroller.style.width) || oScroller.offsetWidth;
    this.widthList = oScrollMid.offsetWidth;
    
    //js取不到css设置的height和width
    
    oScroller.style.overflow = "hidden";
    oScrollMid.appendChild(oScrollMid.cloneNode(true));
    oScrollMid.appendChild(oScrollMid.cloneNode(true));
    
    addEventHandler(oScroller, "mouseover", function() { oScroll.Stop(); });
    addEventHandler(oScroller, "mouseout", function() { oScroll.Start(); });
    
    this.Start();
  },
  //设置默认属性
  SetOptions: function(options) {
    this.options = {//默认值
      Step:            1,//每次变化的px量
      Speed:        20,//速度(越大越慢)
      Side:            "up"//滚动方向:"up"是上，"down"是下，"left"是左，"right"是右
    };
    Object.extend(this.options, options || {});
  }, 
  //上下滚动
  ScrollUpDown: function() {
    this.scroller.scrollTop = this.GetScroll(this.scroller.scrollTop, this.heightScroller, this.heightList);
    
    var oThis = this;
    this.timer = window.setTimeout(function(){ oThis.Start(); }, this.options.Speed);
  },
  //左右滚动
  ScrollLeftRight: function() {
    //注意:scrollLeft超过1400会自动变回1400 注意长度
    this.scroller.scrollLeft = this.GetScroll(this.scroller.scrollLeft, this.widthScroller, this.widthList);
    
    var oThis = this;
    this.timer = window.setTimeout(function(){ oThis.Start(); }, this.options.Speed);
  },
  //获取设置滚动数据
  GetScroll: function(iScroll, iScroller, iList) {
    if(this.side > 0){
        if(iScroll >= (iList * 2 - iScroller)){ iScroll -= iList; }
    } else {
        if(iScroll <= 0){ iScroll += iList; }
    }
    
    return (iScroll + this.options.Step * this.side);
  },
  //开始
  Start: function() {
    
    this.Side.push(this.Side.shift().toLowerCase());
    
    //document.getElementById("test").innerHTML+=s+",";
    
    //方向设置
    switch (this.Side[0].toLowerCase()) {
        case "right" :
            if(this.widthList < this.widthScroller) return;
            this.side = -1;
            this.ScrollLeftRight();
            break;
        case "left" :
            if(this.widthList < this.widthScroller) return;
            this.side = 1;
            this.ScrollLeftRight();
            break;
        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();
    }
  },
  //停止
  Stop: function() {
    clearTimeout(this.timer);
  }
};

window.onload = function(){
    new Scroller("idScroller", "idScrollMid",{ Side:"left-down" });
    new Scroller("idScroller1", "idScrollMid1",{ Side:"left-up" });
    new Scroller("idScroller2", "idScrollMid2",{ Side:"right-down" });
    new Scroller("idScroller3", "idScrollMid3",{ Side:"right-up" });
    
    new Scroller("idScroller4", "idScrollMid4",{ Side:"left-up" });
    new Scroller("idScroller5", "idScrollMid5",{ Side:"right-up" });
    new Scroller("idScroller6", "idScrollMid6",{ Side:"left-down" });
    new Scroller("idScroller7", "idScrollMid7",{ Side:"right-down" });
    
    new Scroller("idScroller8", "idScrollMid8",{ Side:"right-down" });
    new Scroller("idScroller9", "idScrollMid9",{ Side:"left-down" });
    new Scroller("idScroller10", "idScrollMid10",{ Side:"right-up" });
    new Scroller("idScroller11", "idScrollMid11",{ Side:"left-up" });
}
</ script >
< style >
*{margin:0px; padding:0px;}

.Scroller {line-height:50px;overflow:hidden; border:1px solid #000000;}
.ScrollMid {float:left;}
.ScrollMid ul{width:250px;float:left;overflow:hidden;}
.ScrollMid li{list-style:none;}

.Scroller2 {overflow:hidden;float:left;}
.ScrollMid2 {float:left;}
.ScrollMid2 ul{width:100px;height:100px;float:left;overflow:hidden;}
.ScrollMid2 li{list-style:none; width:100px; height:100px;}
</ style >
< div  id ="idScroller"  class ="Scroller"  style ="width:250px; height:50px;" >
   < div  style ="width:500px" >
     < div  id ="idScrollMid"  class ="ScrollMid" >
       < ul >
         < li >   < a  href ="http://shundebk.cn/" > 1111111111111111111111 </ a ></ li >
       </ ul >
     </ div >
   </ div >
</ div >
< br  />
< br  />
< div  id ="idScroller1"  class ="Scroller"  style ="width:250px; height:50px;" >
   < div  style ="width:500px" >
     < div  id ="idScrollMid1"  class ="ScrollMid" >
       < ul >
         < li >   < a  href ="http://shundebk.cn/" > 1111111111111111111111 </ a ></ li >
       </ ul >
     </ div >
   </ div >
</ div >
< br  />
< br  />
< div  id ="idScroller2"  class ="Scroller"  style ="width:250px; height:50px;" >
   < div  style ="width:500px" >
     < div  id ="idScrollMid2"  class ="ScrollMid" >
       < ul >
         < li >   < a  href ="http://shundebk.cn/" > 1111111111111111111111 </ a ></ li >
       </ ul >
     </ div >
   </ div >
</ div >
< br  />
< br  />
< div  id ="idScroller3"  class ="Scroller"  style ="width:250px; height:50px;" >
   < div  style ="width:500px" >
     < div  id ="idScrollMid3"  class ="ScrollMid" >
       < ul >
         < li >   < a  href ="http://shundebk.cn/" > 1111111111111111111111 </ a ></ li >
       </ ul >
     </ div >
   </ div >
</ div >


< br  />< br  />

< div  style ="width:200px;" >
   < div  id ="idScroller4"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid4"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(1.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
   < div  id ="idScroller5"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid5"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(2.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
   < div  id ="idScroller6"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid6"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(2.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
   < div  id ="idScroller7"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid7"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(1.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
</ div >

< br  />< br  />
< div  style ="width:200px;" >
   < div  id ="idScroller8"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid8"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(2.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
   < div  id ="idScroller9"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid9"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(1.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
   < div  id ="idScroller10"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid10"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(1.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
   < div  id ="idScroller11"  class ="Scroller2"  style ="width:100px; height:100px;" >
     < div  style ="width:200px" >
       < div  id ="idScrollMid11"  class ="ScrollMid2" >
         < ul >
           < li  style ="background:url(2.gif);" >   </ li >
         </ ul >
       </ div >
     </ div >
   </ div >
</ div >
< div  id ="test" ></ div >
</ body >
</ html >