How can I slide up and down a panel with Jquery

Hi
I need a simple panel to go up and down using JQuery, the sample online just show me how it goes down but not how it goes up.
Thanks

Script:
<script type="text/javascript">
    $(document).ready(function () {

        $(".btn-slide").click(function () {
            $("#panel").slideToggle("slow");
            $(this).toggleClass("active");
            return false;
        });


    });
</script> 


CSS:
<style type="text/css"> 
#sample {
	margin: 0 auto;
	padding: 0;
	width: 570px;
	font: 75%/120% Arial, Helvetica, sans-serif;
}
a:focus {
	outline: none;
}
#panel {
	background: #754c24;
	height: 200px;
	display: none;
}
.slide {
	margin: 0;
	padding: 0;
	border-top: solid 4px #422410;
	background: url(images/btn-slide.gif) no-repeat center top;
}
.btn-slide {
	background: url(images/white-arrow.gif) no-repeat right -50px;
	text-align: center;
	width: 144px;
	height: 31px;
	padding: 10px 10px 0 0;
	margin: 0 auto;
	display: block;
	font: bold 120%/100% Arial, Helvetica, sans-serif;
	color: #fff;
	text-decoration: none;
}
.active {
	background-position: right 12px;
}
</style> 


aspx:

                                <div id="panel"> 
	                                    <!-- you can put content here --> 
                                </div>
                                                                <p class="slide">
                                   <a href="#" class="btn-slide">Slide Panel</a>
                                </p>

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SlideUP.png