in_category code

<?php
// provide subcat selection for certain categories
if ( in_category('inhouse') ) {

    echo '<div id="taxnav">';
    echo '<ul>';
    echo '<li><a href="/category/inhouse"><span>'. __('[:nl]alle binnenbaden[:fr]toutes les piscines int&eacute;rieures') .'</span></a></li>';
    echo wp_list_categories('child_of=4&title_li=&hide_empty=0');
    echo '</ul>';
    echo '</div>';

} elseif ( in_category('outdoors') ) {

    echo '<div id="taxnav">';
    echo '<ul>';
    echo '<li><a href="/category/outdoors"><span>'. __('[:nl]alle buitenbaden[:fr]toutes les piscines ext&eacute;rieures') .'</span></a></li>';
    echo wp_list_categories('child_of=5&title_li=&hide_empty=0');
    echo '</ul>';
    echo '</div>';
}
?>

<div id="category_container">

<?php get_template_part( 'loop', 'category' ); ?>

</div>