//克隆第一张图片 添加在ul的最后面
var oLi1 = aLi1[0].cloneNode(true);
//克隆最后一张图片 添加在ul的最前面
var oLi2 = aLi1[aLi1.length-1].cloneNode(true);
oUl.appendChild(oLi1);
oUl.insertBefore(oLi2,aLi1[0]);
oUl.style.width = aLi1[0].offsetWidthaLi1.length+"px";
//鼠标移入tab: 关闭定时器，左右按钮显示
oTab.onmouSEOver = function(){
clearInterval(timer);
prev.style.display = 'block';
next.style.display = 'block';
}
//鼠标移出tab: 开启定时器，左右按钮隐藏
oTab.onmouSEOut = function(){
timer = setInterval(function(){
toNext();
},2000);
prev.style.display = 'none';
next.style.display = 'none';
}
//点击小圆点
for(var i=0;i<aLi2.length;i++){
(function(index){
aLi2[index].onclick = function(){
iNow = index+1;
for(var i=0;i<aLi2.length;i++){
aLi2[i].className = '';
}
aLi2[index].className = 'on';
animate(oUl,{left: -iNowaLi1[0].offsetWidth});
}
})(i);
}
//上一个
prev.onclick=function(){
iNow--;
animate(oUl,{left: -iNowaLi1[0].offsetWidth},{complete:function(){
if(iNow == 0){
iNow = aLi1.length-2;
oUl.style.left=-aLi1[0].offsetWidthiNow+'px';
}
for(var i=0;i<aLi2.length;i++){
aLi2[i].className = '';
}
aLi2[iNow-1].className = 'on';
}});
}
//下一个
next.onclick=function(){
toNext();
}
function toNext(){
iNow++;
animate(oUl,{complete:function(){
if(iNow == aLi1.length-1){
iNow = 1;
oUl.style.left=-aLi1[0].offsetWidth*iNow+'px';
}
for(var i=0;i<aLi2.length;i++){
aLi2[i].className = '';
}
aLi2[iNow-1].className = 'on';
}});
}
//设置定时器
timer = setInterval(function(){
toNext();
},2000);
}

for(var name in json){
start[name]=parseFloat(getStyle(obj,name)); //起始位置
dis[name]=json[name]-start[name]; //总距离
}

var count=Math.floor(duration/30); //总次数
var n=0; //次数

clearInterval(obj.timer);
obj.timer=setInterval(function(){
if(n>count){
clearInterval(obj.timer);
options.complete && options.complete();
}else{
for(var name in json){
switch(easing){
//匀速
case 'linear':
var a=n/count;
var cur=start[name]+dis[name]a; //当前位置
break;
//加速
case 'ease-in':
var a=n/count;
var cur=start[name]+dis[name]aaa;
break;
//减速
case 'ease-out':
var a=1-n/count;
var cur=start[name]+dis[name](1-aaa);
break;
}
if(name=='opacity'){
obj.style.opacity=cur;
obj.style.filter = 'alpha(opacity='+cur100+')'; //兼容IE8及以下
}else{
obj.style[name]=cur+'px';
}
}
}
n++;
},30);
}
//获取非行间样式
function getStyle(obj,sName){
return (obj.currentStyle || getComputedStyle(obj,false))[sName];
}