摘要：
//兼容性1，document.body。scrollTop和document.documentElement。scrollTop Compatibility 2.style top的firefox值需要加上“px”，即与此px兼容，无需判断varstmnBASE=840//开始顶部间距（原始值）varstmnActivateSpe
<html>
<head>
<script type="text/javascript">
//兼容性1，document.body.scrollTop 和 document.documentElement.scrollTop 兼容性2. style.top的值firefox需要加“px” , ie兼容此px ,无需另外加判断
var stmnBASE = 840; //起始顶部间距（原始值）
var stmnActivateSpeed = 1000; //
var stmnScrollSpeed = 10; //
var stmnTimer;
function RefreshStaticMenu() {
var top, stmnRefreshTimer;
stmnRefreshTimer = stmnActivateSpeed;
top = document.documentElement.scrollTop || (document.body ? document.body.scrollTop : 0);
document.getElementById('STATICMENU').style.top = 1000 + "px";
//挪动到新位置
if (top > stmnBASE)
document.getElementById('STATICMENU').style.top = top + "px";
//恢复到原位置
else
document.getElementById('STATICMENU').style.top = stmnBASE + "px";
stmnRefreshTimer = stmnScrollSpeed;
stmnTimer = window.setTimeout( 'RefreshStaticMenu()', stmnRefreshTimer);
}
function InitializeStaticMenu() {
var topvalue = document.documentElement.scrollTop || (document.body?document.body.scrollTop:0);
var topFinalvalue = topvalue + stmnBASE;
document.getElementById('STATICMENU').style.top = topFinalvalue + "px";
RefreshStaticMenu();
}
</script>
</head>
<body>
<div id="STATICMENU" class="right_nr news_right_nr" style="border-style:none;POSITION: absolute; TOP: 840px; ">
<img alt="" src="/themes/Default/images/hotel/dl.png" />
</div>
<script type="text/javascript">InitializeStaticMenu();</script>
</body>
</html>