Fatal error: Call to undefined function fb_is_fbml_canvas() in /srv/drupalforfacebook.org/includes/common.inc(1711) : eval()'d code on line 1

Call Stack:
    0.0004     337652   1. {main}() /srv/drupalforfacebook.org/index.php:0
    0.3002   14117060   2. menu_execute_active_handler() /srv/drupalforfacebook.org/index.php:17
    0.3104   14680448   3. call_user_func_array() /srv/drupalforfacebook.org/includes/menu.inc:349
    0.3104   14680700   4. node_page_view() /srv/drupalforfacebook.org/includes/menu.inc:349
    0.3104   14680784   5. node_show() /srv/drupalforfacebook.org/modules/node/node.module:1814
    0.3104   14680916   6. node_view() /srv/drupalforfacebook.org/modules/node/node.module:1118
    0.3104   14681004   7. node_build_content() /srv/drupalforfacebook.org/modules/node/node.module:1014
    0.3105   14682492   8. node_prepare() /srv/drupalforfacebook.org/modules/node/node.module:1101
    0.3105   14682648   9. check_markup() /srv/drupalforfacebook.org/modules/node/node.module:1049
    0.3116   14686016  10. module_invoke() /srv/drupalforfacebook.org/modules/filter/filter.module:455
    0.3116   14688368  11. call_user_func_array() /srv/drupalforfacebook.org/includes/module.inc:461
    0.3116   14688876  12. php_filter() /srv/drupalforfacebook.org/includes/module.inc:461
    0.3116   14688876  13. drupal_eval() /srv/drupalforfacebook.org/modules/php/php.module:81
    0.3129   14742568  14. eval('?><?php if(fb_is_fbml_canvas()) {?>

This page is for facebook connect only.

<?php } else {
$fbu = fb_facebook_user();
?>
<!--
<fb:serverfbml style="width: 350px;">
   <script type="text/fbml">
      <fb:connect-form action="<?php print url($_GET['q'], array('absolute' => TRUE))?>">
      </fb:connect-form>
   </script>
</fb:serverfbml>
-->
<table style="font-size: larger;"><tr><th>Markup</th><th>Result</th></tr>
<?php
if ($fbu) {
  $markups[] = "<fb:name uid=\"$fbu\" useyou=false> </fb:name>";
  $markups[] = "<fb:profile-pic uid=\"$fbu\"> </fb:profile-pic>";
  $markups[] = "<fb:user-status uid=\"$fbu\"> </fb:user-status>";
} else {
  $markups[] = "<fb:login-button v=\"2\"> <fb:intl> Connect with Facebook </fb:intl> </fb:login-button>";
}

//$markups[] = "<fb:bookmark type=\"off-facebook\"> </fb:bookmark>";
$markups[] = "<fb:share-button href=\"http://apps.facebook.com/drupalforfacebook\" type=\"box_count\"> </fb:share-button>";
$markups[] = "<fb:comments> </fb:comments>";

$i=0;
foreach($markups as $markup) {
  $class = ($i %2) ? 'odd' : 'even';
  $i++;
  print "<tr class=$class><td style=\"font-weight:bolder\">" . htmlentities($markup) . "</td><td>" . $markup . "</td></tr>";
}
?>

</table>
<?php }?>
') /srv/drupalforfacebook.org/includes/common.inc:1711