There are not secondary links in theme

Add 'Secondary menu' block to D7-version, please.
I'm write:

                  <div id="pages">
                    <?php if ($main_menu): ?>
                      <div id="navigation">
                        <?php print theme('links__system_main_menu', array(
                          'links' => $main_menu,
                          'attributes' => array(
                          'id' => 'main-menu-links',
                          'class' => array('primary-links', 'links'),
                        ),
                          'heading' => array(
                          'text' => t('Main menu'),
                          'level' => 'h2',
                          'class' => array('element-invisible'),
                        ),
                        )); ?>
                      </div>
                    <?php endif; ?>
/* ------------------------------------------------------*/
                    <?php if ($secondary_menu): ?>
                      <div id="navigation">
                        <?php print theme('links__system_secondary_menu', array(
                          'links' => $secondary_menu,
                          'attributes' => array(
                          'id' => 'main-menu-links',
                          'class' => array('primary-links', 'links'),
                        ),
                          'heading' => array(
                          'text' => t('Secondary menu'),
                          'level' => 'h2',
                          'class' => array('element-invisible'),
                        ),
                        )); ?>
                      </div>
                    <?php endif; ?>
/* --------------------------------------------------------------------------*/
                  </div>