代码如下：
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<SCRIPT language=javascript>
<!--
var menuTopMargin = -110; // 메뉴스크롤 시작 여백
var menuSpeed = 15;
var timerSpeed = 200;
var timer;
var heightLimit = 0;
function checkMenu() {
if(document.body.offsetHeight > heightLimit) {
var reTimer = timerSpeed;
var startPoint = parseInt(document.all.sMenu.style.top,10);
var endPoint = document.body.scrollTop;
endPoint = (menuTopMargin <= endPoint ) ? endPoint - menuTopMargin : 0;
if(startPoint != endPoint) {
moveAmount = Math.ceil(Math.abs(endPoint - startPoint) / 15);
document.all.sMenu.style.top = parseInt(document.all.sMenu.style.top,10) + ((endPoint<startPoint) ? -moveAmount : moveAmount);
reTimer = menuSpeed;
}
} else document.all.sMenu.style.top = 0;
timer = setTimeout("checkMenu();",reTimer);
}
function initMenu() {
if(document.body.offsetHeight > heightLimit) document.all.sMenu.style.top = document.body.scrollTop;
checkMenu();
}
//-->
</SCRIPT>
<DIV id=sMenu style="LEFT: 915px; POSITION: absolute; TOP: 10px">
<TABLE cellSpacing=0 cellPadding=0 width=68 border=0>
<TBODY>
<TR>
<TD><A onfocus=this.blur();
href="http://www.webdn.com/free/"><IMG
src="images/sliding_menu02.gif" border=0></A></TD></TR>
<TR>
<TD
style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 10px; PADDING-TOP: 10px"><A
onfocus=this.blur(); href="http://www.webdn.com/sucai/"><IMG
src="images/sliding_menu01.gif" border=0></A></TD></TR>
<TR>
<TD
style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 10px; PADDING-TOP: 10px"><A
onfocus=this.blur(); href="http://www.webdn.com/moban/"><IMG
src="images/sliding_usb_menu.gif" border=0></A></TD></TR>
</TBODY></TABLE></DIV>
<SCRIPT>
initMenu();
</SCRIPT>
</body>
</html>
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