private function get_external_links_ul()
 {
     $welcome_div = new HTMLTags_Div();
     $welcome_div->set_attribute_str('class', 'external-links');
     $welcome_div->append_tag_to_content(Navigation_HTMLListsHelper::get_1d_ul('External Links'));
     return $welcome_div;
 }
 public function get_features_navigation_div()
 {
     $div = new HTMLTags_Div();
     $div->set_id('features_navigation');
     $ul = Navigation_HTMLListsHelper::get_1d_ul('features');
     $div->append($ul);
     return $div;
 }
 public static function render_ul($tree_name, $class_name = NULL)
 {
     //$nodes = Navigation_1DTreeRetriever::get_tree_nodes($tree_name);
     //
     //#print_r($nodes);
     //
     //echo "<!-- $tree_name navigation UL -->\n";
     //
     //echo "<ul class=\"$class_name\">\n";
     //
     //foreach ($nodes as $node) {
     //	echo "<li>\n";
     //
     //	Navigation_NodeRenderer::render_node($node);
     //
     //	echo "</li>\n";
     //}
     //
     //echo "</ul>\n";
     $ul = Navigation_HTMLListsHelper::get_1d_ul($tree_name, $class_name);
     echo $ul->get_as_string();
 }