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JavaScript实现走马灯效果[无缝连接、循环滚动] 向上

2009-08-21 17:00 896 查看
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="t.aspx.cs" Inherits="t" %>

<!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 runat="server">
<title></title>
</head>
<body>
<!-- 指向链接图片的URL -->
<div align="center" id="demo" style="overflow:hidden;height:200px;width:95px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<div id="demo1">
<!-- 定义内容-->
<img src="images/logo_1.gif"><br />
<img src="images/logo/flashempire.gif"><br />
<img src="images/logo.gif"><br />
<img src="images/logo/5dmedia.gif"><br />
<img src="images/logo/macromedia.gif"><br />
<img src="images/logo/sucaiw.gif"><br />
<img src="images/logo/blueieda.gif"><br />
<img src="images/logo/htmlcn.gif"><br />
<img src="images/logo/fwcn.gif"><br />
</div>
<div id="demo2"></div>
</div>

<script language="javascript" type="text/javascript">
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed = 10; //滚动速度值,值越大速度越慢
demo2.innerHTML = demo1.innerHTML //克隆demo2为demo1
function Marquee() {
if (demo2.offsetTop - demo.scrollTop <= 0) //当滚动至demo1与demo2交界时
demo.scrollTop -= demo1.offsetHeight //demo跳到最顶端
else {
demo.scrollTop++
}
}
var MyMar = setInterval(Marquee, speed); //设置定时器
demo.onmouseover = function() { clearInterval(MyMar) } //鼠标经过时清除定时器达到滚动停止的目的
demo.onmouseout = function() { MyMar = setInterval(Marquee, speed) } //鼠标移开时重设定时器
</script>

</body>
</html>
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