Вопрос по facebook share

<div id="fb-root"></div>
<script src="https://connect.facebook.net/en_US/all.js#appId=<?php techo($facebook_info['app_id']); ?>&xfbml=1"></script>
<script>
window.fbAsyncInit = function() {
  FB.init({appId: "<?php techo($facebook_info['app_id']); ?>", status: true, cookie: true, xfbml: true});
};

function streamPublish(a_name, a_caption, a_desc, a_img, a_url) {
  FB.ui(
    {
      method: 'stream.publish',
      display: 'dialog',
      message: 'getting educated about Facebook Connect',
      attachment: {
        name: a_name,
        caption: a_caption,
        description: (
          a_desc
        ),
        media: [{
          'type': 'image',
          'src': a_img,
        }],
        href: a_url
      },
      action_links: [{
        text: 'Code',
        href: a_url
      }],
      user_message_prompt: 'Share your thoughts about Connect'
    },
    function (response) {
      if (response && response.post_id) {
        alert('Post was published.');
      } else {
        alert('Post was not published.');
      }
    }
  );
}
</script>