protected function get_scene_content_div()
 {
     $div = new HTMLTags_Div();
     # The left and right column divs
     $left_div = new HTMLTags_Div();
     $left_div->set_attribute_str('class', 'left-column');
     /*
      * Tree View Div
      */
     $left_div->append(Oedipus_FrameTreeHelper::get_frame_tree_div($this->get_scene()));
     $div->append_tag_to_content($left_div);
     $right_div = new HTMLTags_Div();
     $right_div->set_attribute_str('class', 'right-column');
     /*
      * Scene Note Div
      */
     $right_div->append(Oedipus_DramaHelper::get_scene_notes_div($this->get_scene()));
     $div->append_tag_to_content($right_div);
     $clear_div = new HTMLTags_Div();
     $clear_div->set_attribute_str('class', 'clear-columns');
     $div->append_tag_to_content($clear_div);
     return $div;
 }