<!DOCTYPE HTML>
<html lang="en-gb" class="nojs">
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1.0" />
<title>无标题文档</title>
<link rel="stylesheet" href="reset.css" />
<style type="text/css">
body{ background-image:url(img/bodyBg.jpg)}
img{ width:100%; background:url(2.jpg) no-repeat}
</style>
</head>
<body>
<section>
<img id="banner" src="img/banner.jpg" />
</section>
</body>
<script src="jquery.min.js"></script>
<script>
$(function(){
k=0;
function run(k){
$('body').css('backgroundPosition',k+"px")
}
setInterval(function(){k-=1;run(k)},50);
})
</script>
</html>
