function change(){
	
	var o={};
	return o={
		data:{
			"lastindex":0, //上一个序号，默认为0
			"index":0, //当前序号，默认为0
			"mun":0, //数量总数
			
			"autoplay":false, //是否开启自动切换
			"autoplay_time":3000, //自动切换时间差
			"autoplay_interval":"", //自动切换计时器
			"autoplay_settimeout":null,//暂停计时器
			"autoplay_settimeout_time":3000,//暂停时间

			"btn_function":"",//切换事件方法
			"btn_element":"", //切换按钮父类对象
			"btn_select":"on", //切换按钮选中按钮的class
			"btn":"", //切换按钮html
			
			"parent_move_element":"", //移动的父类框
			"parent_element":"", //最大父类框
			
			"element":"", //最小的对象
			
			"position_style":"order", //order 顺序 loop 循环  no 不定位只隐藏
			"position_width":null, //定位的宽度

		},
		init:function(data){
			//赛选初始化数据
			$.each(data,function(i,n){
				o.data[i]=data[i];
			});
			//确定数量
			if(!this.data["mun"])this.data["mun"]=$(this.data["element"]).length-1;
			//确定宽度
			if(!this.data["position_width"])this.data["position_width"]=$(this.data["element"]).width();
			//判读是否启动切换
			if(this.data["autoplay"])this.autoplay();
			//定点
			this.position();
			
		},
		//清除切换
		remove:function(){
			clearinterval(this.data["autoplay_interval"]);
			cleartimeout(this.data["autoplay_settimeout"]);
		},
		//定点
		position:function(){
			//移动内容定点
			if(this.data["position_style"]=="no"){
				$(this.data["element"]).hide();
				$(this.data["element"]+":eq("+this.data["index"]+")").show();
			}else if(this.data["position_style"]=="loop"){
				$(this.data["element"]).css({"left":-this.data["position_width"]+"px"});
				$(this.data["element"]+":eq("+this.data["index"]+")").css({"left":"0px"});
			}else if(this.data["position_style"]=="order"){
				$.each($(this.data["element"]),function(i,n){
					$(n).css({"left":i*o.data["position_width"]+"px"});
				});
				$(this.data["parent_move_element"]).css({"left":this.data["index"]*this.data["position_width"]+"px"});
			}
			//按钮定位
			if(this.data["btn"]){this.btn_position();}
			
		},
		//按钮初始化
		btn_position:function(){
			for(var i=0;i<=this.data["mun"];i++){
				$(this.data["btn_element"]).append(this.data["btn"]);
				$(this.data["btn_element"]).children().eq(i).attr("onclick",this.data["btn_function"]+".todo({'index':"+i+"})");
			}
			$(this.data["btn_element"]).children().eq(this.data["index"]).addclass(this.data["btn_select"]);
		},
		//按钮切换
		btn_todo:function(data){
			var index=!isnan(data["index"])?data["index"]:this.data["index"];
			
			$(this.data["btn_element"]).children().removeclass(this.data["btn_select"]);
			$(this.data["btn_element"]).children().eq(index).addclass(this.data["btn_select"]);
		},
		//重置定时器
		autoplay:function(){
			clearinterval(this.data["autoplay_interval"]);
			cleartimeout(this.data["autoplay_settimeout"]);
			
			this.data["autoplay_settimeout"]=settimeout(function(o){
				o.data["autoplay_interval"]=setinterval(function(o){o.todo(o);},o.data["autoplay_time"],o);
			},this.data["autoplay_settimeout_time"],this);
		},

		//切换
		todo:function(data){
			//判断是否传入配置
			if(data["data"])this.data=data["data"];
			//设置上一个切换的序号
			if((!isnan(data["index"])||data["direc"])&&this.data["autoplay"])this.autoplay();
			
			this.data["lastindex"]=this.data["index"];
			//判断当前序号
			if(!isnan(data["index"])){this.data["index"]=data["index"];}else{
				if(data["direc"]=="-"){
					if(this.data["autoplay"])this.autoplay();
					this.data["index"]==0?this.data["index"]=this.data["mun"]:this.data["index"]--;
				}else if(data["direc"]=="+"){
					if(this.data["autoplay"])this.autoplay();
					this.data["index"]==this.data["mun"]?this.data["index"]=0:this.data["index"]++;
				}else{
					this.data["index"]==this.data["mun"]?this.data["index"]=0:this.data["index"]++;
				}
			}
			if(this.data["position_style"]=="no"){
				$(this.data["element"]+":eq("+this.data["lastindex"]+")").stop(false,true).fadeout(500);
				$(this.data["element"]+":eq("+this.data["index"]+")").stop(false,true).fadein(500);
			}else if(this.data["position_style"]=="loop"){
				var direc=-1;
				if(data["direc"]=="-")direc=1;
				
				$(this.data["element"]+":eq("+this.data["lastindex"]+")").stop(false,true).animate({"left":direc*this.data["position_width"]+"px"},500);
				$(this.data["element"]+":eq("+this.data["index"]+")").stop(false,true).css({"left":-direc*this.data["position_width"]+"px"}).animate({"left":"0px"},500);
			}else if(this.data["position_style"]=="order"){
				$(this.data["parent_move_element"]).stop(false,true).animate({"left":-this.data["index"]*this.data["position_width"]+"px"},500);
			}

			//按钮选中切换
			
			if(this.data["btn"]){ this.btn_todo({});}
		},
		
	}
	
}