FB:Request-Form Element Not Rendering

Question

Trying on FB Connect on a Rails App w/ Facebooker, but the following element is not rendering for some reason. It appears in the HTML code, but nothing shows up in Firefox. Any leads on where to start?

<fb:request-form action="create_poke_path" content="
 If you select some friends, they will see this message.
 &lt;fb:req-choice label=&quot;They will get this button, too&quot; url=&quot;new_poke_path&quot; /&gt;
" invite="true" method="post" type="Poke"><fb:multi-friend-selector actiontext="Choose some friends to Poke" max="20" showborder="false" /><input name="authenticity_token" type="hidden" value="X1gSAbkGdW3ZpqeUGXgd6XoUIzu8xIQtETpfLlv1JtI=" /></fb:request-form>

I've got...

  <script src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php" type="text/javascript"></script>
  <script type="text/javascript">
//<![CDATA[
             Element.observe(window,'load', function() {
                FB_RequireFeatures(["XFBML"], function() {
                  FB.Facebook.init('6578b531eb34fff439eba352e75a6050','/xd_receiver.html', {});

                });
              });

//]]>
</script>

Answer 1

for some reasons that 'm currently tryint to go through, facebooker needs prototype (rails' :defaults javascript) to appear... wich is in a way a pain in the %!s if you want to go with jquery => http://bit.ly/bfGJSx !!! but maybe it is not exactly what's going wrong here...