Edit D:\chineseall_products\bak\digitalLib6\js\slide.js

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

var Extend = function(destination, source)
{
  for (var property in source)
  {
    destination[property] = source[property];
  }

return destination;
}

var CurrentStyle = function(element)
{
  return element.currentStyle || document.defaultView.getComputedStyle(element, null);
}

var Bind = function(object, fun) 
{
  var args = Array.prototype.slice.call(arguments).slice(2);
  return function() 
  {
    return fun.apply(object, args.concat(Array.prototype.slice.call(arguments)));
  }
}

//??????,??????,??????
var SlideTrans = function(container, slider, count, options)
{
  this._slider = $(slider);
  this._container = $(container);//??????
  this._timer = null;//?????
  this._count = Math.abs(count);//??????
  this._target = 0;//?????
  this._t = this._b = this._c = 0;//tween???
  this.Index = 0;//??????
  this.SetOptions(options);
  this.Auto = !!this.options.Auto;
  this.Duration = Math.abs(this.options.Duration);
  this.Time = Math.abs(this.options.Time);
  this.Pause = Math.abs(this.options.Pause);
  this.Tween = this.options.Tween;
  this.onStart = this.options.onStart;
  this.onFinish = this.options.onFinish;
  var bVertical = !!this.options.Vertical;
  this._css = bVertical ? "top" : "left";//???
  //??????
  var p = CurrentStyle(this._container).position;
  p == "relative" || p == "absolute" || (this._container.style.position = "relative");
  this._container.style.overflow = "hidden";
  this._slider.style.position = "absolute";
  this.Change = this.options.Change ? this.options.Change :
  this._slider[bVertical ? "offsetHeight" : "offsetWidth"] / this._count;
};
SlideTrans.prototype = {
  //??????????
  SetOptions: function(options)
  {
    this.options = {
      //?????
      Vertical:	true,//????????????????????
      Auto:		true,//??????
      Change:		0,//?????
      Duration:	50,//?????????
      Time:		10,//??????
      Pause:		2000,//??????(Auto??rue?????)
      onStart:	function(){},//???????????
      onFinish:	function(){},//???????????
      Tween:		Tween.Quart.easeOut//tween???
    };
    
    Extend(this.options, options || {});
  },
  //???????
  Run: function(index)
  {
    //???index
    index == undefined && (index = this.Index);
    index < 0 && (index = this._count - 1) || index >= this._count && (index = 0);
    //??????
    this._target = -Math.abs(this.Change) * (this.Index = index);
    this._t = 0;
    this._b = parseInt(CurrentStyle(this._slider)[this.options.Vertical ? "top" : "left"]);
    this._c = this._target - this._b;
    this.onStart();
    this.Move();
  },
  //???
  Move: function()
  {
    clearTimeout(this._timer);
    //????????????????????????????
    if (this._c && this._t < this.Duration) 
    {
      this.MoveTo(Math.round(this.Tween(this._t++, this._b, this._c, this.Duration)));
      this._timer = setTimeout(Bind(this, this.Move), this.Time);
    }
    else
    {
      this.MoveTo(this._target);
      this.Auto && (this._timer = setTimeout(Bind(this, this.Next), this.Pause));
    }
  },
  //?????
  MoveTo: function(i)
  {
    this._slider.style[this._css] = i + "px";
  },
  //?????
  Next: function()
  {
    this.Run(++this.Index);
  },
  //?????
  Previous: function()
  {
    this.Run(--this.Index);
  },
  //???
  Stop: function()
  {
    clearTimeout(this._timer); this.MoveTo(this._target);
  }
};

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