WP: Custom Nav Menu's

custom_nav_menus.php

<?php
/**
 * Location: funtions.php
 *
 */

// Registering in functions.php
if ( function_exists( 'register_nav_menus' ) ) {
	register_nav_menus( 
		array(			
			'primary' => 'Primary Navigation', // 'slug_for_theme_location' => 'Label For Admin Section'
			'secondary' => 'Secondary Navigation'
		)
	);
	
}

// Display the menu(s) in the header/template
// more help @ http://codex.wordpress.org/Function_Reference/wp_nav_menu
$args = array(
	'theme_location'  => 'primary', // slug from functions.php register_nav_menus()
	//'menu'            => 'primary', // hard-set the navigation
	'container'       => 'div', // menu wrapper element
	'container_class' => 'menu-{menu slug}-container', 
	'container_id'    => '',  // default: none
	'menu_class'      => 'menu', // ul class
	'menu_id'         => '', // ul id
	'echo'            => true, // '0' to return menu instead of echo menu
	'fallback_cb'     => 'wp_page_menu', // fallback in menu doesn't exist
	'before'          => '', // before <a>
	'after'           => '', // after <a>
	'link_before'     => '', // inside <a>, before text
	'link_after'      => '', // inside <a>, after text
	'depth'           => 0, // '0' to display all depths
	'walker'          => '' // ?
);

// call this where you want the menu
wp_nav_menu( $args );