js弧形轮播图插件

核心代码：

function arcSlip()
  {
	 var oPic=document.getElementById('user_pic');
	 var oPrev=getByClass(oPic,'prev')[0];
	 var oNext=getByClass(oPic,'next')[0];
	 
	 var aLi=oPic.getElementsByTagName('li');
	 
	 var arr=[];
	 
	 for(var i=0;i<aLi.length;i++)
	 {
	   var oImg=aLi[i].getElementsByTagName('img')[0];
	   
	 	 arr.push([parseInt(getStyle(aLi[i],'left')),parseInt(getStyle(aLi[i],'top')),
		           getStyle(aLi[i],'zIndex'),oImg.width,parseFloat(getStyle(aLi[i],'opacity')*100)]);
	 }
	 
	 
	 oPrev.onclick=function moveTP()
	 {
	     arr.push(arr[0]);
		 arr.shift();
		     for(var i=0;i<aLi.length;i++)
	         {
			     var oImg=aLi[i].getElementsByTagName('img')[0];
					
					aLi[i].style.zIndex=arr[i][2];
					startMove(aLi[i],{left:arr[i][0],top:arr[i][1],opacity:arr[i][4]});
					startMove(oImg,{width:arr[i][3]});
			 }
			
	 }