JavaScript DHTML/jQuery/unique
Remove all duplicate elements from an array of elements
<html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var a = jQuery.unique($("p").get());
alert(a.length);
});
</script>
</head>
<body>
<body>
<p></p><p></p><p></p>
</body>
</html>