Demo JQuery .show(), .hide() dan .toggle()
HTML
<button class="hilang">Hilang!</button>
<button class="muncul">Muncul!</button>
<button class="bukatutup">Muncul & Hilang!</button>
<div id="target" style="display:none;"></div>
CSS
body {padding:30px;}
#target {
background:#9D0053;
height:160px;
padding:5px;
}
JavaScript
$('.bukatutup').click(function() {
$('#target').toggle('slow');
});