javascript + css下拉菜单_<li 慰nm慰use慰ver="displaysubmenu(this)" 慰nm慰use慰ut=-CSDN博客

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>JavaScript下拉菜单</title>
    <style type="text/css">
        *
        {
            padding: 0;
            margin: 0;
        }
        body
        {
            font-family: verdana, sans-serif;
            font-size: small;
        }
        #navigation, #navigation li ul
        {
            list-style-type: none;
        }
        #navigation
        {
            margin: 20px;
        }
        #navigation li
        {
            float: left;
            text-align: center;
            position: relative;
        }
        #navigation li a:link, #navigation li a:visited
        {
            display: block;
            text-decoration: none;
            color: #000;
            width: 120px;
            height: 40px;
            line-height: 40px;
            border: 1px solid #fff;
            border-width: 1px 1px 0 0;
            background: #c5dbf2;
            padding-left: 10px;
        }
        #navigation li a:hover
        {
            color: #fff;
            background: #2687eb;
        }
        #navigation li ul li a:hover
        {
            color: #fff;
            background: #6b839c;
        }
        #navigation li ul
        {
            display: none;
            position: absolute;
            top: 40px;
            left: 0;
            margin-top: 1px;
            width: 120px;
        }
        #navigation li ul li ul
        {
            display: none;
            position: absolute;
            top: 0px;
            left: 130px;
            margin-top: 0;
            margin-left: 1px;
            width: 120px;
        }
    </style>

    <script type="text/javascript">
        function displaySubMenu(li) {
            var subMenu = li.getElementsByTagName("ul")[0];
            subMenu.style.display = "block";
        }
        function hideSubMenu(li) {
            var subMenu = li.getElementsByTagName("ul")[0];
            subMenu.style.display = "none";
        }
    </script>

</head>
<body>
    <ul id="navigation">
        <li οnmοuseοver="displaySubMenu(this)" οnmοuseοut="hideSubMenu(this)"><a href="#">栏目1</a>
            <ul>
                <li><a href="#">栏目1->菜单1</a></li>
                <li><a href="#">栏目1->菜单2</a></li>
                <li><a href="#">栏目1->菜单3</a></li>
                <li><a href="#">栏目1->菜单4</a></li>
            </ul>
        </li>
        <li οnmοuseοver="displaySubMenu(this)" οnmοuseοut="hideSubMenu(this)"><a href="#">栏目2</a>
            <ul>
                <li><a href="#">栏目2->菜单1</a></li>
                <li><a href="#">栏目2->菜单2</a></li>
                <li><a href="#">栏目2->菜单3</a></li>
                <li><a href="#">栏目2->菜单4</a></li>
                <li><a href="#">栏目2->菜单5</a></li>
            </ul>
        </li>
        <li οnmοuseοver="displaySubMenu(this)" οnmοuseοut="hideSubMenu(this)"><a href="#">栏目3</a>
            <ul>
                <li οnmοuseοver="displaySubMenu(this)" οnmοuseοut="hideSubMenu(this)"><a href="#">栏目3->菜单1</a>
                    <ul>
                        <li><a href="#">菜单1->子菜单1</a></li>
                        <li><a href="#">菜单1->子菜单2</a></li>
                        <li><a href="#">菜单1->子菜单3</a></li>
                        <li><a href="#">菜单1->子菜单4</a></li>
                    </ul>
                </li>
                <li><a href="#">栏目3->菜单2</a></li>
                <li οnmοuseοver="displaySubMenu(this)" οnmοuseοut="hideSubMenu(this)"><a href="#">栏目3->菜单3</a>
                    <ul>
                        <li><a href="#">菜单3->子菜单1</a></li>
                        <li><a href="#">菜单3->子菜单2</a></li>
                        <li><a href="#">菜单3->子菜单3</a></li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>
</body>
</html>