<?php if ( !theme_dynamic_sidebar( 'top' ) ) : ?>
<?php $style = theme_get_option('theme_sidebars_style_top'); ?>
<?php $heading = theme_get_option('theme_'.(is_single()?'single':'posts').'_widget_title_tag'); ?>

<?php ob_start();?>
      <?php get_search_form(); ?> 
<?php theme_wrapper($style, array('title' => __('Search', THEME_NS), 'heading' => $heading, 'content' => ob_get_clean())); ?>

<?php endif; ?>