导航条随滚动条下上滚动

2012-11-10

导航条随滚动条上下滚动导航条随滚动条上下滚动，就像美丽说的导航条一样。没办法，本人js太差，望前辈告知[解

导航条随滚动条上下滚动
导航条随滚动条上下滚动，就像美丽说的导航条一样。没办法，本人js太差，望前辈告知

[解决办法]

HTML code

<!DOCTYPE HTML><html>    <head>        <meta charset="gb2312" />        <title></title>        <style>            body {                height:2000px;            }            div {                position:absolute; right:40px; top:40px;                width:90%; height:30px;                background:#ddd;            }        </style>    </head>    <body>        <div id="test">滚动试试</div>        <script>            function toolbar(el){                el = typeof el == 'string' ? document.getElementById(el) : el;                var elTop = el.offsetTop;                var sTop = 0;                window.onscroll = function(){                    sTop = document.body.scrollTop || document.documentElement.scrollTop;                    if( sTop > elTop ){                        el.style.top = sTop + 'px';                    }else{                        el.style.top = elTop + 'px';                    }                }            }            toolbar('test');        </script>    </body></html>
[解决办法]
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HTML code

<!DOCTYPE HTML>
<html>
    <head>
        <meta charset="gb2312" />
        <title></title>
        <style>
            body {
                height:2000px;
            }
            div……

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导航条随滚动条下上滚动