Displaying categories

I m having a bit of a problem with something. I want to display some categories in the sidebar … but exclude some of them.

This is what I’m trying.

<ul class="navmenubar" style="float:left; width:730px;">
		<?php wp_list_categories('orderby=name&exclude=406'); ?>
	</ul>

This is not excluding category with ID 406 and neither is this:

<?php 

	$hero_args = array(
		'child_of'                 => 60
		);
			$sidebar_heroes = get_categories( $hero_args );
			//var_dump($sidebar_heroes);
			echo "<ul>";
			foreach($sidebar_heroes as $sidebar_hero) {

				echo '<li class="sidebar-category">'.$sidebar_hero->category_nicename.'</li>';

			}
			echo "</ul>";
		?>