'header_menu',
'container' => 'div',
'container_class' => 'navbar-collapse',
'container_id' => 'bs-example-navbar-collapse-1',
'menu_class' => '',
'menu_id' => '',
'echo' => true,
'before' => '',
'after' => '',
'link_before' => '',
'link_after' => '',
'items_wrap' => '
',
'depth' => 0,
'walker' => ''
);
wp_nav_menu($main);
?>