Thematic "More" type

//change where theme uses excerpts
function childtheme_content($content) {
    if (is_home() || is_archive()) {
        $content= 'more';
    }
    return $content;
}
add_filter('thematic_content', 'childtheme_content');


//change default Thematic excerpts to kia_excerpts
function childtheme_excerpts($post) {
    global $thematic_content_length;

        if ( strtolower($thematic_content_length) == 'more' ) {

            if ( preg_match('/<!--more(.*?)?-->/', get_the_content() ) ) {
                $post = get_the_content(more_text());
                $post = apply_filters('the_content', $post);
                $post = str_replace(']]>', ']]&gt;', $post);

            } else {
                $post = '';

                    if  ( has_post_thumbnail() ) {
                        $post .= '<a class="entry-thumb" href="' . get_permalink() . '" title="Permalink to ' . get_the_title() . '" >' . get_the_post_thumbnail(get_the_ID(), 'thumbnail', $attr) . '</a>' ;
                    }

                    $post .= get_the_excerpt();
                    $post = apply_filters('the_excerpt',$post);

                    $post .= '<p class="readmore"><a title="'. _('Permalink to ').get_the_title() . '" href=" ' . get_permalink() . '">'._('Read More').'&raquo;</a></p>';

                }


        }

    return $post;

}

add_filter('thematic_post', 'childtheme_excerpts');