Submit button not showing up!

Hi everyone,

I have added a Comment section as you can see here but the submit button doesn’t appear.

I use the following code as my Comments template:

<?php // Do not delete these lines
	if (!empty($_SERVER['SCRIPT_FILENAME']) && 'comments.php' == basename($_SERVER['SCRIPT_FILENAME']))
		die ('Please do not load this page directly. Thanks!');
	if (!empty($post->post_password)) { // if there's a password
		if ($_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password) { ?>
			<p class="nocomments">This post is password protected. Enter the password to view comments.</p>
			<?php return;
		}
	}
	/* This variable is for alternating comment background */
	$oddcomment = 'class="alt" ';
?>

<!-- Start editing here. -->

<?php if ($comments) : ?>
	<h3><?php comments_number('No Comments', 'One Comment', '% Comments' );?> on “<?php the_title(); ?>”</h3>

	<ul class="commentlist">

	<?php foreach ($comments as $comment) : ?>

		<li <?php echo $oddcomment; ?>id="comment-<?php comment_ID() ?>">

			<?php echo get_avatar( $comment, 32 ); ?>
			<?php comment_author_link() ?>
			<?php if ($comment->comment_approved == '0') : echo "<em>Your comment is awaiting moderation.</em>"; endif; ?>

			<?php comment_date('F jS, Y') ?>
			<?php comment_time() ?>
			<?php edit_comment_link('edit','  ',''); ?>

			<?php comment_text() ?>

		<?php $oddcomment = ( empty( $oddcomment ) ) ? 'class="alt" ' : ''; ?>

	<?php endforeach; ?>

	<?php else : // this is displayed if there are no comments so far ?>

		<?php if ('open' == $post->comment_status) : ?>

		<?php else : ?>
		<p class="nocomments">Comments are closed.</p>

	<?php endif; ?>
<?php endif; ?>

<?php if ('open' == $post->comment_status) : ?>

<h3>Leave a Reply</h3>

<?php if ( get_option('comment_registration') && !$user_ID ) : ?>
<p>You must be <a>/wp-login.php?redirect_to=<?php echo urlencode(get_permalink()); ?>">logged in</a> to post a comment.</p>

<?php else : ?>

<form action="<?php echo get_option('siteurl'); ?>/wp-comments-post.php" method="post" id="commentform">

<?php if ( $user_ID ) : ?>

	<p>Logged in as <a>/wp-admin/profile.php"><?php echo $user_identity; ?></a>. <a>/wp-login.php?action=logout" title="Log out of this account">Log out »</a></p>

<?php else : ?>

	<p class="clearfix"><label for="author">Name <?php if ($req) echo "(required)"; ?></label> <input type="text" name="author" id="author" value="<?php echo $comment_author; ?>" size="22" tabindex="1" /></p>

	<p class="clearfix"><label for="email">Email (will not be shared<?php if ($req) echo ", required"; ?>)</label> <input type="text" name="email" id="email" value="<?php echo $comment_author_email; ?>" size="22" tabindex="2" /></p>

	<p class="clearfix"><label for="url">Website</label> <input type="text" name="url" id="url" value="<?php echo $comment_author_url; ?>" size="22" tabindex="3" /></p>

<?php endif; ?>

	<p><textarea name="comment" id="comment" cols="100%" rows="10" tabindex="4"></textarea></p>

	<p class="clearfix"><input name="submit" type="submit" id="submit" tabindex="5" value="Submit Comment" /></p>
	<input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>" />

<?php do_action('comment_form', $post->ID); ?>

</form>

<?php endif; endif; ?>

[Please use the code buttons when posting code – as is, your code may have been damaged by the forum’s parser]

Many thanks for your help!
Bénédicte