Add the following to the functions.php

function thematic_custom_access()
{
?>
<div id=”access”>
<div>
<a href=”#content” title=”<?php _e(‘Skip navigation to the content’, ‘thematic’); ?>”><?php _e(‘Skip to content’, ‘thematic’); ?></a>
</div>
</div><!– #access –>
<?php
}
function thematic_remove_access()
{
remove_action(‘thematic_header’, ‘thematic_access’, 9);
remove_action(‘wp_head’, ‘thematic_head_scripts’);
remove_filter(‘wp_page_menu’,’thematic_add_menuclass’);
}
add_action(‘init’, ‘thematic_remove_access’);
add_action(‘thematic_header’, ‘thematic_custom_access’, 9);