链接图片无缝(无间断)向左平滑滚动Js版代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>向左无缝滚动</title> 
<style type="text/css"> 
body,html,div,a{ margin:0; padding:0} 
#demo { 
background: #FFF; 
overflow:hidden; 
border: 1px dashed #CCC; 
width: 500px; 
} 
#demo img { 
border: 3px solid #F2F2F2; 
} 
#indemo { 
float: left; 
width: 800%; 
} 
#demo1 { 
float: left; 
} 
#demo2 { 
float: left; 
margin-left:7px; 
} 
</style> 
<script type="text/javascript"> 
window.onload = function(){ 
var speed=10; //数字越大速度越慢 
var tab=document.getElementById("demo"); 
var tab1=document.getElementById("demo1"); 
var tab2=document.getElementById("demo2"); 
tab2.innerHTML=tab1.innerHTML; 
function Marquee(){ 
if(tab2.offsetWidth-tab.scrollLeft<=0) 
tab.scrollLeft-=tab1.offsetWidth 
else{ 
tab.scrollLeft++; 
} 
} 
var MyMar=setInterval(Marquee,speed); 
tab.onmouseover=function() {clearInterval(MyMar)}; 
tab.onmouseout=function() {MyMar=setInterval(Marquee,speed)}; 
} 
</script> 
</head> 
<body> 
向左无缝滚动 
 
 
 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
<img src="https://www.jb51.net/images/logo_s.gif" border="0" /> 
 
 
 
 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]