<div id="test1"><div id="fb-root"></div>
        <script src="http://connect.facebook.net/en_US/all.js#xfbml=1">
        </script>
        <fb:comments href="http://www.jewelryfresh.com/" num_posts="10" width="739"></fb:comments></div>

Above is the code for facebook comments box. I want to dynamically change the href value to the page on which it is. How can i do it.I do not want the static href value as it is now. Please help.