Demo JQuery .slideToggle()
HTML
<button class="bukatutup">Buka/Tutup</button>
<div id="target"></div>
CSS
body {padding:30px;}
#target {
background:#f46522;
width:200px;
height:150px;
padding:5px;
}
JavaScript
$('.bukatutup').click(function() {
$('#target').slideToggle(1000);
});