Add menu separator

gistfile1.txt

/**
 * Adds a separator in the admin menu to separate our custom menu items.
 */
function add_admin_menu_separator() {
	global $menu;
	
	$menu[29] = array(
		0	=>	'',
		1	=>	'read',
		2	=>	'separator29',
		3	=>	'',
		4	=>	'wp-menu-separator'
	);
}
add_action( 'admin_menu', 'add_admin_menu_separator' );