Wordpress Footer.php menü eklemeyi yapamıyorum

<?php get_header(); ?>

<!-- content start -->
<div class="content">
<div class="sliderMask">
<div class="sliderContent">
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

<h1 id="post-<?php the_ID(); ?>"><?php the_title(); ?></h1>

<h3 class="details">
<span class="cats">POSTED IN <?php the_category(', ') ?><?php the_tags(' | TAGS : ', ', ', '<br />'); ?></span>
<span class="date"><?php the_time('j.m.Y'); ?></span>
</h3>

<?php the_content(__('(Read More &raquo')); ?>
<?php wp_link_pages(array('before' => '<p><strong>Pages :</strong> ', 'after' => '</p>', 'next_or_number' => 'number')); ?>
<?php comments_template(); ?>

<?php endwhile; else: ?>
<p><?php _e('Nothing found.'); ?></p>
<?php endif; ?>

</div>
</div>
</div>
<!-- content end -->

<?php require_once(TEMPLATEPATH.'/tmp_background.php'); ?>

<?php get_footer(); ?>

function register_my_menus() {
register_nav_menus(
array(
'orta-menu' => __( 'Orta Menu' )
)
);
}

<?php wp_nav_menu( array( 'theme_location' => 'orta-menu' ) ); ?>*