Thanks for the advice. I tried it an succeeded to some extend.
When I put that code into the header section like this:
div id="header">
<h1><a href="<?php echo WB_URL ?>"><?php page_title('', '[WEBSITE_TITLE]'); ?></a></h1>
<h2>This is our homepage</h2>
show_menu(1, 1, 1, true, "[a]<img src=" .WB_URL .
"/media/flags/[menu_title].gif />[/a]", '', '', '', false, '', 0);
</div>
Then it displays at the right place, but not flags but like this:
"show_menu(1, 1, 1, true, "[a][/a]", '', '', '', false, '', 0); "
Michael