function main_menu() {
    if( get_theme_mod( 'laura_advanced_performance_hide_menu_list_id' , '0' ) == '1' ) {
    $menu_id = 'main-menu';
    }else{
    $menu_id = 'footer-menu';    
    }
    wp_nav_menu( array(
        'theme_location'    => 'primary',
        'menu_id'           => $menu_id,
        'menu_class'        => 'nav-menu',
        'container'         => 'ul'
    ));
}