<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script src="js/jquery-1.3.2.min.js" type="text/javascript"></script>
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$(function(){
    
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<style media="screen" type="text/css">
html, body, div, span,iframe, h1, h2, h3, h4, h5, h6, p, a, img, strong, sub, sup, b, u, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    vertical-align: baseline;
    background: transparent;
    list-style:none;
}

html {
    overflow-y:scroll;
    border:0; 
    background:#b2af9e;
} 
body {
    text-align:center;
    width:1000px;
    font: 12px/18px Tahoma, Helvetica, Arial, sans-serif;
    margin:auto;
    background:#fff;
}
a {text-decoration: none;text-decoration:none}
a:hover {text-decoration:none}
div{
width:100%;
height:20px;
background-color:#e5edf6;
}
ul li {
float:left;
width:60px;
height:20px;
background-color:#0280C6;
margin:0px;
display:inline; 
color:#B6E4FD;
}
ul li:hover{
background-color:#B6E4FD;
color:#0280C6;
}
ul li ul{
display:none;
}
ul li ul li{
width:60px;
height:20px;
background-color:#B6E4FD;
margin:0px;
color:#0280C6;
}
ul li ul li:hover{
background-color:#0280C6;
color:#B6E4FD;
}
ul li ul li a {
text-decoration: none;
color:#0280C6;
text-decoration:none;
}
ul li ul li a:hover {
color: #B6E4FD;
text-decoration:none;
}

</style>
<body>
<ul>
    <li>aaa
        <ul>
            <li><a href="#">aaa1</a></li>
            <li><a href="#">aaa2</a></li>
            <li><a href="#">aaa3</a></li>
            <li><a href="#">aaa4</a></li>
        </ul>
    </li>
    <li>bbb
        <ul>
            <li><a href="#">bbb1</a></li>
            <li><a href="#">bbb2</a></li>
            <li><a href="#">bbb3</a></li>
            <li><a href="#">bbb4</a></li>
        </ul>
    </li>
    <li>ccc
        <ul>
            <li><a href="#">ccc1</a></li>
            <li><a href="#">ccc2</a></li>
            <li><a href="#">ccc3</a></li>
            <li><a href="#">ccc4</a></li>
        </ul>
    </li>
    <li>ddd
        <ul>
            <li><a href="#">ddd1</a></li>
            <li><a href="#">ddd2</a></li>
            <li><a href="#">ddd3</a></li>
            <li><a href="#">ddd4</a></li>
        </ul>
    </li>
    <li>eee
        <ul>
            <li><a href="#">eee1</a></li>
            <li><a href="#">eee2</a></li>
            <li><a href="#">eee3</a></li>
            <li><a href="#">eee4</a></li>
            <li><a href="#">eee5</a></li>
        </ul>
    </li>
</ul>

</body>
</html>