Multi level navigation

[caviar]

nobody to help me :'-(
I just read you post here
http://get-simple.info/forum/viewtopic.p...3596#p3596

but I'm ok with that ...
a part of my code

Code:

<div id="header">
        <a class="logo" href="<?php get_site_url(); ?>"><?php get_site_name(); ?></a>
        <p class="tagline"><?php get_component('tagline'); ?></p>
        <ul id="nav">
            <?php get_navigation(return_page_slug()); ?>
        </ul>
    </div>

    <div id="bodycontent">
    <?php    
    echo return_page_slug();
    menu_master();
    ?>

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and the first level menu appears ...not the sub levels