Get width of any element using JQuery

This code will give the width of dvWidth element using JQuery in below given code. You can download the Jquery from http://docs.jquery.com/Downloading_jQuery.

<script type="text/javascript" src="Script/jquery-1.3.2.js"></script>
<script type="text/javascript">
 $(document).ready(function(){
             alert($("#dvWidth").width());
        });
</script>

<div id="dvWidth" style="width:300px">
  <h1>Virendra Dugar</h1>
  </div>

Enjoy.