Slimmenu in wp

// header.php

<div id="menu" class="col-lg-8 col-md-8">
<?php
if (function_exists('wp_nav_menu')) {
wp_nav_menu(array(
'theme_location' => 'wpj-main-menu',
'menu_id' => 'dropmenu',
'menu_class' => 'slimmenu',
'fallback_cb' => 'wpj_default_menu'));
}
else {
wpj_default_menu();
}
?>
</div> <!-- end div #menu -->


// function.php

// add menu support and fallback menu if menu doesn't exist
add_action('init', 'wpj_register_menu');
function wpj_register_menu() {
if (function_exists('register_nav_menu')) {
register_nav_menu( 'wpj-main-menu', __( 'Main Menu', 'brightpage' ) );
}
}
function wpj_default_menu() {
echo '<ul id="dropmenu" class="slimmenu">';
if ('page' != get_option('show_on_front')) {
echo '<li><a href="'. home_url() . '/">Home</a></li>';
}
wp_list_pages('title_li=');
echo '</ul>';
}