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*{ margin:0 auto; padding:0;}
li{ list-style:none;}
img{ border:0;}
.btn_left{ width:78px; height:78px; background:url(images/btn.jpg) -68px -68px no-repeat; display:block; position:absolute; top:75px; left:20px; z-index:1;}
.btn_right{ width:78px; height:78px ; background:url(images/btn.jpg) 8px -68px no-repeat ; display:block; position:absolute; top:75px; right:20px; z-index:1;}
.btn_left:hover{ background:url(images/btn.jpg) -68px 8px no-repeat ;}
.btn_right:hover{ background:url(images/btn.jpg) 8px 8px no-repeat ; }
.sroll{ height:250px; border:1px solid rgb(204,204,204); width:1340px; position:relative;}
.wrap{ width:1120px; height:200px; position:relative; overflow:hidden; background:#eee; margin:0 auto; z-index:0; padding-right:35px; border:2px solid #000; margin-top:20px; }
.wrap ul{ position:absolute; left:0px;}
.wrap ul li{ float:left; text-align:center; padding-bottom:5px;}
.wrap ul li img{ width:250px; margin: 0 5px; padding:5px; background:rgb(153,153,153);}
.wrap ul li img:hover{ background:rgb(0,102,102);}
<script>
window.onload = function(){
var oDiv = document.getElementById("sroll");
var oUl = oDiv.getElementsByTagName('ul')[0];
var aLi = oDiv.getElementsByTagName('li');
var aBtn = oDiv.getElementsByTagName('a');
var iSpeed=-3;
var timer='null'
oUl.innerHTML +=oUl.innerHTML;
oUl.style.width=aLi[0].offsetWidth*aLi.length+'px';
timer=setInterval(function (){
oUl.style.left=oUl.offsetLeft+iSpeed+"px";
if(oUl.offsetLeft |
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