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 = 
{
	initialize: function(container, slider, parameter, count, options) {
		if(parameter <= 0 || count <= 0) return;
		var oContainer = $(container), oSlider = $(slider), oThis = this;
		this.Index = 0;
		this._timer = null;
		this._slider = oSlider;
		this._parameter = parameter;
		this._count = count || 0;
		this._target = 0;
		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;
	},
	SetOptions: function(options) {
		this.options = {
		Up:   true,
		Step:  5,
		Time:  5,
		Auto:  true,
		Pause:  5000,
		onStart: function(){},
		onFinish: function(){}
	};
	Object.extend(this.options, options || {});
	},
	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();
	},
	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); }
		}
	},
	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;
	},
	
	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); 
	}
};
var objs = $("idNum").getElementsByTagName("li");
var tv = new TransformView("idTransformView", "idSlider", advheight, advnumber, {
  onStart : function(){ Each(objs, function(o, i){ o.className = tv.Index == i ? "on" : ""; }) }
});
tv.Start();
Each(objs, function(o, i){
	o.onmouseover = function(){
		o.className = "on";
		tv.Auto = false;
		tv.Index = i;
		tv.Start();
	}
	o.onmouseout = function(){
		o.className = "";
		tv.Auto = true;
		tv.Start();
	}
})
}