I want to customze menu_tree output

Question

I found a code in drupal page in this url http://api.drupal.org/api/drupal/includes%21menu.inc/function/theme_menu_tree/6#comment-1073

code is

<?php
function phptemplate_menu_tree($tree,$menu_name="") {
     return '<ul class="menu menu-$menu_name ">'. $tree .'</ul>';
}
?>

it is written that we can customize every menu by css and also adding $menu_name.

but even though that I have added this function into my template.php and it is working , $menu_name variable is always empty

really the target that I am following is : I want to modify the css class of the ROOT us base on menu name.

for example for primary links , i want to have this return out put

'<ul class="menu menu-primary-links ">'. $tree .'</ul>'

or for secondary links i want to have this return output

'<ul class="menu menu-secondary-links ">'. $tree .'</ul>'

$tree includes all nested li items from the selected menu.

please help me

Answer 1

page.tpl.php

for admin menu

    <?php print '<ul id="nav-admin" class="menu   clearfix">'.menu_tree($menu_name = 'navigation').'</ul>';?>

//for primary menu
 <?php print  '<ul id="nav-primary" class="menu clearfix">'.menu_tree($menu_name = 'primary-links').'</ul>'; ?>
//for secondary menu
 <?php print  '<ul id="nav-secondary" class="menu clearfix">'.menu_tree($menu_name = 'secondry-links').'</ul>'; ?>

template.php

function menu_tree($tree}{return $tree;}

Answer 2

Try out by calling

<?php print theme('links', $primary_links, array('class' =>'menu-primary-links')); ?>

to include primary links to the required template file. No need for phptemplate_menu_tree function in template.php