stick menu example in jquery

<style type="text/css">
#header{
width:100%;
width: 100%;
text-align: center;
background-color: rgb(111, 144, 250);
margin-bottom: 12px;
padding-bottom: 20px;
padding-top: 20px;
font-weight: bold;
border-radius: 10px;
}

#text{
text-align:center;
}

#menu { background:#eee; overflow: hidden; width: 100%; text-align:center; border-radius:8px}
#menu ul { margin: 0; padding: 0 30px; float: right; }
#menu ul li { margin: 0; padding: 0; list-style: none; float: left;}
#menu ul li a { display: block;color: #008080;text-decoration: none;font-weight: bold;margin: -8px;padding: 10px 16px;float: right; }

#menu.fixed { position: fixed; top: 0px; }

#demo { height: 1500px; }</style>
<div id="menu">
<ul>
<li>
<a href="http://localhost:8080/web/democollege/enroll">Discover</a></li>
<li>
<a href="http://localhost:8080/web/democollege/engage">Engage</a></li>
<li>
<a href="http://localhost:8080/web/democollege/enroll">Enroll</a></li>
<li>
<a href="http://localhost:8080/web/democollege/learn">Learn</a></li>
<li>
<a href="http://localhost:8080/web/democollege/achievements">Achieve</a></li>
<li>
<a href="http://localhost:8080/web/democollege/graduate">Graduate</a></li>
</ul>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script><script>
(function($){
  $(function(){
    var $stick = $('#menu');
if($stick.length){
var $window = $(window);
var top = $stick.offset().top - parseFloat($stick.css('marginTop').replace(/auto/, 0));
$window.scroll(function (event) {
var y = $window.scrollTop();
if(y >= top){
$stick.addClass('fixed');
}else{
$stick.removeClass('fixed');
}
});
}
  });
})(jQuery);
</script><table border="0" cellpadding="0" id="mytable2" style="border-radius: 8px; background-color:#F0FFFF;">
<tbody>
<tr>
<td>
<div id="header">
<h2>Discover</h2></div>
</td>
</tr>
<tr>
<td align="center">
<img src="" /><img alt="" src="/image/image_gallery?uuid=be71a901-11c0-41e9-adad-2101271f72a5&amp;groupId=10157&amp;t=1385738577925" style="width: 680px; height: 244px;" /></td>
</tr>
<tr>
<td align="center">
<h3>
Information </h3>
</td>
</tr>
<tr>
<td>
<b>Location:</b>
<p>
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</td>
</tr>
</tbody>
</table>
<br />