How do I remove the search bar from main and top menus?

nothingsshocking.com
WordPress Version: 3.4.1

Yikes! I added a search bar to my floating menu, to the left of the content, and now the search bar appears in all the menu areas, above and below the header. I only want the search bar to appear in the left-hand side, floating menu. How do I remove the main and top menus? Thank you.

This is the code I added to the functions.php:

add_filter(‘wp_nav_menu_items’,’add_search_box’, 10, 2);
function add_search_box($items, $args) {

ob_start();
get_search_form();
$searchform = ob_get_contents();
ob_end_clean();

$items .= ‘

• ‘ . $searchform . ‘

‘;

return $items;
}