Выскальзывающие пункты меню на jQuery

<div class="container">
            <ul id="menu">
                <li>
                    <a>
                        <i class="icon_about"></i>
                        <span class="title">Выход</span>
                        <span class="description">Learn about us and our services</span>
                    </a>
                </li>
                <li>
                    <a>
                        <i class="icon_work"></i>
                        <span class="title">Работы</span>
                        <span class="description">See our work and portfolio</span>
                    </a>
                </li>
                <li>
                    <a>
                        <i class="icon_help"></i>
                        <span class="title">Помощь</span>
                        <span class="description">Talk to our support</span>
                    </a>
                </li>
                <li>
                    <a>
                        <i class="icon_search"></i>
                        <span class="title">Поиск</span>
                        <span class="description">Поиск по сайту</span>
                    </a>
                </li>
            </ul>
        </div>

.container{
    width:900px;
    height:130px;
    margin:0 auto;
    position:relative;
    overflow:hidden;
    border:3px solid #fff;
    background-color:#fff;
    -moz-box-shadow:1px 1px 6px #000;
    -webkit-box-shadow:1px 1px 6px #000;
    -moz-border-radius:0px 0px 20px 20px;
    -webkit-border-bottom-left-radius:20px;
    -webkit-border-bottom-right-radius:20px;
    border-radius:0px 0px 20px 20px;
}
ul#menu{
    list-style:none;
    position:absolute;
    bottom:0px;
    left:20px;
    font-size:36px;
    font-family: Helvetica, Arial, sans-serif;
    font-weight: bold;
    color:#999;
    letter-spacing:-2px;
}
ul#menu li{
    float:left;
    margin:0px 10px 0px 0px;
}
ul#menu a{
    cursor:pointer;
    position:relative;
    float:left;
    bottom:-95px;
    line-height:20px;
    width:210px;
}
.icon_about,
.icon_work,
.icon_help,
.icon_search{
    width:64px;
    height:64px;
    display:block;
    left:140px;
    top:50px;
    position:absolute;
}
.icon_about{
    background:transparent url(../images/id_card.png) no-repeat top left;
}
.icon_work{
    background:transparent url(../images/globe.png) no-repeat top left;
}
.icon_help{
    background:transparent url(../images/help.png) no-repeat top left;
}
.icon_search{
    background:transparent url(../images/find.png) no-repeat top left;
}
ul#menu span.title{
    display:block;
    height:26px;
    text-shadow:1px 1px 1px #000;
    color:#B7B7B6;
    text-indent:10px;
}
ul#menu span.description{
    width:140px;
	height:80px;
    background-color:#B7B7B6;
    border:3px solid #fff;
    color:#fff;
    display:block;
    font-size:24px;
    padding:10px;
    -moz-box-shadow:1px 1px 6px #000;   
    -webkit-box-shadow:1px 1px 6px #000;
    box-shadow:1px 1px 6px #000;
    -moz-border-radius:10px;
    -webkit-border-radius:10px;
    border-radius:10px;
}
ul#menu a:hover span.description{
    background-color:#54504F;
}
ul#menu a:hover span.title{
    color:#54504F;
}

<script type="text/javascript" src="{{ tpl_url }}/js/jquery-1.4.2.min.js"></script>
        <script type="text/javascript">
        $(function() {
            $('#menu > li').hover(
                function () {
                    var $this = $(this);
                    $('a',$this).stop(true,true).animate({
                            'bottom':'-15px'
                        }, 300);
                    $('i',$this).stop(true,true).animate({
                            'top':'-10px'
                        }, 400);
                },
                function () {
                    var $this = $(this);
                    $('a',$this).stop(true,true).animate({
                            'bottom':'-95px'
                        }, 300);
                    $('i',$this).stop(true,true).animate({
                            'top':'50px'
                        }, 400);
                }
            );
        });
        </script>