'header-menu', // Setting up the location for the main-menu, Main Navigation. 'menu_class' => 'sf-menu', //Adding the class for dropdowns 'container_id' => 'navwrap', //Add CSS ID to the containter that wraps the menu. 'fallback_cb' => 'bandtheme_menu_fallback', //if wp_nav_menu is unavailable, WordPress displays wp_page_menu function, which displays the pages of your blog. ) ); ?>