EDIT

<?php

/**

 * @file

 * Zen theme's implementation to display a single Drupal page.

 *

 * Available variables:

 *

 * General utility variables:

 * - $base_path: The base URL path of the Drupal installation. At the very

 *   least, this will always default to /.

 * - $directory: The directory the template is located in, e.g. modules/system

 *   or themes/bartik.

 * - $is_front: TRUE if the current page is the front page.

 * - $logged_in: TRUE if the user is registered and signed in.

 * - $is_admin: TRUE if the user has permission to access administration pages.

 *

 * Site identity:

 * - $front_page: The URL of the front page. Use this instead of $base_path,

 *   when linking to the front page. This includes the language domain or

 *   prefix.

 * - $logo: The path to the logo image, as defined in theme configuration.

 * - $site_name: The name of the site, empty when display has been disabled

 *   in theme settings.

 * - $site_slogan: The slogan of the site, empty when display has been disabled

 *   in theme settings.

 *

 * Navigation:

 * - $main_menu (array): An array containing the Main menu links for the

 *   site, if they have been configured.

 * - $secondary_menu (array): An array containing the Secondary menu links for

 *   the site, if they have been configured.

 * - $secondary_menu_heading: The title of the menu used by the secondary links.

 * - $breadcrumb: The breadcrumb trail for the current page.

 *

 * Page content (in order of occurrence in the default page.tpl.php):

 * - $title_prefix (array): An array containing additional output populated by

 *   modules, intended to be displayed in front of the main title tag that

 *   appears in the template.

 * - $title: The page title, for use in the actual HTML content.

 * - $title_suffix (array): An array containing additional output populated by

 *   modules, intended to be displayed after the main title tag that appears in

 *   the template.

 * - $messages: HTML for status and error messages. Should be displayed

 *   prominently.

 * - $tabs (array): Tabs linking to any sub-pages beneath the current page

 *   (e.g., the view and edit tabs when displaying a node).

 * - $action_links (array): Actions local to the page, such as 'Add menu' on the

 *   menu administration interface.

 * - $feed_icons: A string of all feed icons for the current page.

 * - $node: The node object, if there is an automatically-loaded node

 *   associated with the page, and the node ID is the second argument

 *   in the page's path (e.g. node/12345 and node/12345/revisions, but not

 *   comment/reply/12345).

 * - $banner_url: from zen_dataportal theme-settings.php

 * - $page_background_url: from zen_dataportal theme-settings.php

 *

 * Regions:

 * - $page['header']: Items for the header region.

 * - $page['navigation']: Items for the navigation region, below the main menu (if any).

 * - $page['help']: Dynamic help text, mostly for admin pages.

 * - $page['highlighted']: Items for the highlighted content region.

 * - $page['content']: The main content of the current page.

 * - $page['sidebar_first']: Items for the first sidebar.

 * - $page['sidebar_second']: Items for the second sidebar.

 * - $page['footer']: Items for the footer region.

 * - $page['bottom']: Items to appear at the bottom of the page below the footer.

 *

 * @see template_preprocess()

 * @see template_preprocess_page()

 * @see zen_preprocess_page()

 * @see template_process()

 */

?>

      <a href="<?php print $front_page; ?>" title="<?php print t('Home'); ?>" rel="home" id="logo"><img src="<?php print $logo; ?>" alt="<?php print t('Home'); ?>" /></a>

    <?php endif; ?>

    <?php if ($site_name || $site_slogan): ?>

      <hgroup id="name-and-slogan">

        <?php if ($site_name): ?>

          <h1 id="site-name">

            <a href="<?php print $front_page; ?>" title="<?php print t('Home'); ?>" rel="home"><span><?php print $site_name; ?></span></a>

          </h1>

        <?php endif; ?>

        <?php if ($site_slogan): ?>

          <h2 id="site-slogan"><?php print $site_slogan; ?></h2>

        <?php endif; ?>

      </hgroup><!-- /#name-and-slogan -->

    <?php endif; ?>

    <?php if ($secondary_menu): ?>

      <nav id="secondary-menu" role="navigation">

        <?php print theme('links__system_secondary_menu', array(

          'links' => $secondary_menu,

          'attributes' => array(

            'class' => array('links', 'inline', 'clearfix'),

          ),

          'heading' => array(

            'text' => $secondary_menu_heading,

            'level' => 'h2',

            'class' => array('element-invisible'),

          ),

        )); ?>

      </nav>

    <?php endif; ?>

    <?php print render($page['header']); ?>

  </header>

  <div id="main">

    <div id="content" class="column" role="main">

      <?php print render($page['highlighted']); ?>

      <?php print $breadcrumb; ?>

      <a id="main-content"></a>

      <?php print render($title_prefix); ?>

      <?php if ($title): ?>

        <h1 class="title" id="page-title"><?php print $title; ?></h1>

      <?php endif; ?>

      <?php print render($title_suffix); ?>

      <?php print $messages; ?>

      <?php print render($tabs); ?>

      <?php print render($page['help']); ?>

      <?php if ($action_links): ?>

        <ul class="action-links"><?php print render($action_links); ?></ul>

      <?php endif; ?>

      <?php print render($page['content']); ?>

      <?php print $feed_icons; ?>

    </div><!-- /#content -->

    <div id="navigation">

      <?php if ($main_menu): ?>

        <nav id="main-menu" role="navigation">

          <?php

          // This code snippet is hard to modify. We recommend turning off the

          // "Main menu" on your sub-theme's settings form, deleting this PHP

          // code block, and, instead, using the "Menu block" module.

          // @see http://drupal.org/project/menu_block

          print theme('links__system_main_menu', array(

            'links' => $main_menu,

            'attributes' => array(

              'class' => array('links', 'inline', 'clearfix'),

            ),

            'heading' => array(

              'text' => t('Main menu'),

              'level' => 'h2',

              'class' => array('element-invisible'),

            ),

          )); ?>

        </nav>

      <?php endif; ?>

      <?php print render($page['navigation']); ?>

    </div><!-- /#navigation -->

    <?php

      // Render the sidebars to see if there's anything in them.

      $sidebar_first  = render($page['sidebar_first']);

      $sidebar_second = render($page['sidebar_second']);

    ?>

    <?php if ($sidebar_first || $sidebar_second): ?>

      <aside class="sidebars">

        <?php print $sidebar_first; ?>

        <?php print $sidebar_second; ?>

      </aside><!-- /.sidebars -->

    <?php endif; ?>

  </div><!-- /#main -->

  <?php print render($page['footer']); ?>

</div><!-- /#page -->

<?php print render($page['bottom']); ?>