/**
  * Get title for blog posting (used in ilNotesGUI)
  * 
  * @param int $a_blog_id
  * @param int $a_posting_id 
  * @return string
  */
 static function lookupSubObjectTitle($a_blog_id, $a_posting_id)
 {
     // page might be deleted, so setting halt on errors to false
     include_once "Modules/Blog/classes/class.ilBlogPosting.php";
     $post = new ilBlogPosting($a_posting_id);
     if ($post->getBlogId() == $a_blog_id) {
         return $post->getTitle();
     }
 }