向下展开菜单 隐藏展开菜单

注意本例用了一个图片，就是大类的图片menu.jpg,可以到演示页面下载

演示

 

 

XML/HTML Code

<script>

    $(document).ready(function () {

        $('#accordion a.item').click(function () {

            //slideup or hide all the Submenu
            $('#accordion li').children('ul').slideUp('fast');

            //remove all the "Over" class, so that the arrow reset to default
            $('#accordion a.item').each(function () {
                if ($(this).attr('rel')!='') {
                    $(this).removeClass($(this).attr('rel') + 'Over');
                }
            });

            //show the selected submenu
            $(this).siblings('ul').slideDown('fast');

            //add "Over" class, so that the arrow pointing down
            $(this).addClass($(this).attr('rel') + 'Over');

            return false;

        });

    });

    </script>

    <style>

    /* First Level UL List */
    #accordion {
        margin:0;
        padding:0;
        list-style:none;
    }

        #accordion li {
            width:267px;
        }

        #accordion li a {
            display: block;
            width: 268px;
            height: 43px;
            text-indent:-999em;
            outline:none;
        }

        /* Using CSS Sprite for menu item */
        #accordion li a.popular {
            background:url(menu.jpg) no-repeat 0 0;
        }

        #accordion li a.popular:hover, .popularOver {
            background:url(menu.jpg) no-repeat -268px 0 !important;
        }

        #accordion li a.category {
            background:url(menu.jpg) no-repeat 0 -43px;
        }

        #accordion li a.category:hover, .categoryOver {
            background:url(menu.jpg) no-repeat -268px -43px !important;
        }

        #accordion li a.comment {
            background:url(menu.jpg) no-repeat 0 -86px;
        }

        #accordion li a.comment:hover, .commentOver {
            background:url(menu.jpg) no-repeat -268px -86px !important;
        }


        /* Second Level UL List*/
        #accordion ul {
            background:url(bg.gif) repeat-y 0 0;
            width:268px;
            margin:0;
            padding:0;
            display:none;
        }

            #accordion ul li {
                height:30px;
            }

            /* styling of submenu item */
            #accordion ul li a {
                width:240px;
                height:25px;
                margin-left:15px;
                padding-top:5px;
                border-bottom: 1px dotted #777;
                text-indent:0;
                color:#ccc;
                text-decoration:none;
            }

            /* remove border bottom of the last item */
            #accordion ul li a.last {
                border-bottom: none;
            }

    </style>


<ul id="accordion">
    <li>
        <a href="#" class="item popular" rel="popular">Popular Post</a>
        <ul>
            <li><a href="#">Popular Post 1</a></li>
            <li><a href="#">Popular Post 2</a></li>
            <li><a href="#" class="last">Popular Post 3</a></li>
        </ul>
    </li>
    <li>
        <a href="#" class="item category" rel="category">Category</a>
        <ul>
            <li><a href="#">Category 1</a></li>
            <li><a href="#">Category 2</a></li>
            <li><a href="#" class="last">Category 3</a></li>
        </ul>
    </li>
    <li>
        <a href="#" class="item comment" rel="comment">Recent Comment</a>
        <ul>
            <li><a href="#">Comment 1</a></li>
            <li><a href="#">Comment 2</a></li>
            <li><a href="#" class="last">Comment 3</a></li>
        </ul>
    </li>
</ul>

 

原文地址:http://www.freejs.net/article_daohangcaidan_105.html