html下拉菜单的实现

这是简单的下拉菜单

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <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>
    <!-- style="display:inline-block;"-->
    <div style="border: 3px solid red;">
        <ul id="navigation">
            <li onmouseover="displaySubMenu(this)" onmouseout="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 onmouseover="displaySubMenu(this)" onmouseout="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 onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
                <a href="#">栏目3</a>
                <ul>
                    <li onmouseover="displaySubMenu(this)" onmouseout="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 onmouseover="displaySubMenu(this)" onmouseout="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>
    </div>
</body>
</html>

 

posted @ 2015-05-13 14:33  梦锁湘江  阅读(629)  评论(1)  编辑  收藏  举报