Php markup question: php/html within conditional bit

you code may look like this

    <?php global $wp_query; 
    $thepostid = $wp_query->post->ID;
    $postdata = get_post($thePostid, ARRAY_A);
    $authorid = $postdata['post_author'];
    if ($authorid==1)
    {
    echo 'Show nothing';
    }
    else
    {
    ?>
    <div id="author-bio">
    <h3>About The Author</h3>
    <?php echo get_avatar( get_the_author_id() , 80 ); ?>
    <h4><?php the_author_posts_link(); ?></h4>
    <div class="desc"><?php the_author_meta('description'); ?> </div>
    </div>
    <?php
    }
    ?>