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  $responsive = $variables['responsive'];

  // Add sticky headers, if applicable.

    drupal_add_js('misc/tableheader.js');

    // Add 'sticky-enabled' class to the table to identify it for JS.

    // This is needed to target tables constructed by this function.

  }

  // Format the table columns:

    foreach ($colgroups as $number => $colgroup) {

      $attributes = array();

  }

  // Add the 'empty' row message if available.

    $header_count = 0;

    foreach ($header as $header_cell) {

      if (is_array($header_cell)) {

  }

  // Format the table header:

    $ts = tablesort_init($header);

    // HTML requires that the thead tag has tr tags in it followed by tbody

    // tags. Using ternary operator to check and see if we have any rows.

  }

  // Format the table rows:

    $output .= "<tbody>\n";

    foreach ($rows as $row) {

      // Check if we're dealing with a simple or complex row.

  }

  // Format the table footer:

    $output .= "<tfoot>\n";

    foreach ($footer as $row) {

      // Check if we're dealing with a simple or complex row.