code will not validate

<div id="sidebar">
 
<ul>

  <?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar() ) : ?>

    <li>
      <?php include (TEMPLATEPATH . '/searchform.php'); ?>
    </li>

    <?php /* Menu for subpages of current page (copied from K2 theme) */
    global $notfound;
    if (is_page() and ($notfound != '1')) {
        $current_page = $post->ID;
        while($current_page) {
            $page_query = $wpdb->get_row("SELECT ID, post_title, post_status, post_parent FROM $wpdb->posts WHERE ID = '$current_page'");
            $current_page = $page_query->post_parent;
        }
        $parent_id = $page_query->ID;
        $parent_title = $page_query->post_title;

        // if ($wpdb->get_results("SELECT * FROM $wpdb->posts WHERE post_parent = '$parent_id' AND post_status != 'attachment'")) {
        if ($wpdb->get_results("SELECT * FROM $wpdb->posts WHERE post_parent = '$parent_id' AND post_type != 'attachment'")) {
    ?>

    <li>
      <h2 class="sidebartitle"><?php echo $parent_title; ?> <?php _e('Subpages'); ?></h2>
      <ul class="list-page">
        <?php wp_list_pages('sort_column=menu_order&title_li=&child_of='. $parent_id); ?>
      
    </ul>

    <?php } } ?>
<li>
<br />
<br />
<p class="aboutme">I believe that <b>imagination</b> is stronger than <i>knowledge</i> -
That <b>myth</b> is more potent than <i>history</i>.
I believe that <b>dreams</b> are more powerful than <i>facts</i> -
That <b>hope</b> always triumphs over <i>experience</i> -
That <b>laughter</b> is the only cure for <i>grief</i>.
and I believe that <b>love</b> is stronger than <i>death</i>.</p>



    
<br />
<br />
<?php get_calendar(); ?>
      <h2 class="sidebartitle"><img src="images/cat.gif" alt="categories"/></h2>
      <ul class="list-cat">
        <?php wp_list_cats('sort_column=name&optioncount=1&hierarchical=0'); ?>
      </ul>
    </li>

       <li>
      <h2 class="sidebartitle"><img src="http://lovelatoya.com/wp-content/uploads/2007/10/archive.gif
" alt="archive"/></h2>
      <ul class="list-archives">
        <?php wp_get_archives('type=monthly'); ?>
      </ul>
    </li>
    <li>
      <h2 class="sidebartitle"><?php _e('Links'); ?></h2>
      <ul class="list-blogroll">
        <?php get_links('-1', '<li>', '</li>', '<br />', FALSE, 'id', FALSE, FALSE, -1, FALSE); ?>
      </ul>
    </li>

  <?php endif; ?>
</ul>
 

   <ul><li> <?php if(function_exists(wp_onlinecounter)) { wp_onlinecounter(); } ?></li></ul>


  <?php cypher_sitestats(); ?>    


</div>
<!--/sidebar -->