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 = {
  //容器对象,滑动对象,切换参数,切换数量
  initialize: function(container, slider, parameter, count, options) {
	if(parameter <= 0 || count <= 0) return;
	var oContainer = $(container), oSlider = $(slider), oThis = this;
 
	this.Index = 0;//&#24403;&#21069;&#32034;&#24341;

	this._timer = null;//&#23450;&#26102;&#22120;
	this._slider = oSlider;//&#28369;&#21160;&#23545;&#35937;
	this._parameter = parameter;//&#20999;&#25442;&#21442;&#25968;
	this._count = count || 0;//&#20999;&#25442;&#25968;&#37327;
	this._target = 0;//&#30446;&#26631;&#21442;&#25968;
	
	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;
  },
  //&#35774;&#32622;&#40664;&#35748;&#23646;&#24615;
  SetOptions: function(options) {
	this.options = {//&#40664;&#35748;&#20540;
		Up:			true,//&#26159;&#21542;&#21521;&#19978;(&#21542;&#21017;&#21521;&#24038;)
		Step:		7,//&#28369;&#21160;&#21464;&#21270;&#29575;
		Time:		35,//&#28369;&#21160;&#24310;&#26102;
		Auto:		true,//&#26159;&#21542;&#33258;&#21160;&#36716;&#25442;
		Pause:		4000,//&#20572;&#39039;&#26102;&#38388;(Auto&#20026;true&#26102;&#26377;&#25928;)
		onStart:	function(){},//&#24320;&#22987;&#36716;&#25442;&#26102;&#25191;&#34892;
		onFinish:	function(){}//&#23436;&#25104;&#36716;&#25442;&#26102;&#25191;&#34892;
	};
	Object.extend(this.options, options || {});
  },
  //&#24320;&#22987;&#20999;&#25442;&#35774;&#32622;
  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();
  },
  //&#31227;&#21160;
  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); }
	}
  },
  //&#33719;&#21462;&#27493;&#38271;
  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;
  },
  //&#20572;&#27490;
  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); }
	};
	
	
	////////////////////////test2
	
	var objs2 = $("idNum12").getElementsByTagName("li");
	
	var tv2 = new TransformView("idTransformView2", "idSlider2", 1000, 5, {
		onStart: function(){ Each(objs2, function(o, i){ o.className = tv2.Index == i ? "on" : ""; }) },//&#25353;&#38062;&#26679;&#24335;
		Up: false
	});
	
	tv2.Start();
	
	Each(objs2, function(o, i){
		o.onmouseover = function(){
			o.className = "on";
			tv2.Auto = false;
			tv2.Index = i;
			tv2.Start();
		}
		o.onmouseout = function(){
			o.className = "";
			tv2.Auto = true;
			tv2.Start();
		}
	})
	
	$("idStop1").onclick = function(){ tv2.Auto = false; tv2.Stop(); }
	$("idStart1").onclick = function(){ tv2.Auto = true; tv2.Start(); }
	$("idNext1").onclick = function(){ tv2.Index++; tv2.Start(); }
	$("idPre1").onclick = function(){ tv2.Index--;tv2.Start(); }
	$("idFast1").onclick = function(){ if(--tv2.Step <= 0){tv2.Step = 1;} }
	$("idSlow1").onclick = function(){ if(++tv2.Step >= 10){tv2.Step = 10;} }
	$("idReduce1").onclick = function(){ tv2.Pause-=1000; if(tv2.Pause <= 0){tv2.Pause = 0;} }
	$("idAdd1").onclick = function(){ tv2.Pause+=1000; if(tv2.Pause >= 5000){tv2.Pause = 5000;} }
	
	$("idReset1").onclick = function(){
		tv2.Step = Math.abs(tv2.options.Step);
		tv2.Time = Math.abs(tv2.options.Time);
		tv2.Auto = !!tv2.options.Auto;
		tv2.Pause = Math.abs(tv2.options.Pause);
	}
	
}