Zvezdochet,
Отлично работает, даже в ИЕ7.
<!DOCTYPE HTML>
<html>
<head>
<title>Обзор узла связи</title>
<link rel="stylesheet" href="http://harvesthq.github.com/chosen/chosen/chosen.css" />
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="http://harvesthq.github.com/chosen/chosen/chosen.jquery.js"></script>
<script type="text/javascript">
jQuery(document).ready(function(){
jQuery(".chosen").chosen().change(function(e){
console.log(e);
});
});
</script>
</head>
<body>
<div class="container">
<h1>Chosen</h1>
<select class="chosen" style="width:200px;">
<option>Cent OC</option>
<option>Ubuntu</option>
<option>Fedore core...</option>
<option>Free BSD...</option>
<option>Debian</option>
</select>
</div>
</body>
</html>