add tkis: facebook like,

Add a gadget to html and java script:

 <!-- AddThis Button BEGIN -->
    <div class="addthis_toolbox addthis_default_style ">
    <a class="addthis_button_facebook_like" fb:like:layout="button_count"></a>
    <a class="addthis_button_tweet"></a>
    <a class="addthis_counter addthis_pill_style"></a>
    </div>
    <script type="text/javascript">var addthis_config = {"data_track_clickback":true};</script>
    <script type="text/javascript" src="http://s7.addthis.com/js/250/addthis_widget.js#username=sumon3g"></script>
    <!-- AddThis Button END -->