滚动背景效果实现-优快云博客

From:http://bbs.blueidea.com/thread-2970016-1-1.html

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=utf-8" />

<title>无标题文档</title>

<script type="text/javascript">
window.onload = function(){

    var scrollBackground = {

        object:document.getElementById("scrollBackground"),

        endTop:3700,

        nowTop:0

    };

    var scrollInterval = setInterval(function(){

        scrollBackground.nowTop = (scrollBackground.nowTop!=scrollBackground.endTop)?(scrollBackground.nowTop+1):0;

        scrollBackground.object.style.backgroundPosition = "0px -" + scrollBackground.nowTop + "px";

    },50);
}

</script>

</head>

<body style="margin:0; padding:0">

<div id="scrollBackground" style="width:1440px; height:300px; background:url(http://youlove.us/template/theme/youloveus/img/bg.jpg) no-repeat 0 0"></div>

</body>

</html>