jquery plugin jquery.media doesn't work

jquery plugin jquery.media doesn't work

help!
i use the plugin jquery.media in my page like:
  1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>flv test</title>
    </head>

    <body>


    <a class="media {width:250, height:250}" href="http://jquery.malsup.com/media/flash/curtain.flv">FLV File</a>


    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
    <script type="text/javascript" src="http://jquery.malsup.com/media/jquery.media.js?v0.94"></script>


    <script type="text/javascript">
    $(function() {
        //$.fn.media.mapFormat('avi','quicktime');
                // this one liner handles all the examples on this page
                $('a.media').media();
            });

    </script>
    </body>
    </html>

























but it does not work...
anyone can help me ...