Swap 2012 title format

<?php
add_action( 'after_setup_theme', 'z1_turnoff_twentytwelve_title' );
function z1_turnoff_twentytwelve_title() {
    remove_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );
}

add_filter( 'wp_title', 'z1_twentytwelve_wp_title', 10, 2 );
function z1_twentytwelve_wp_title( $title, $sep ) {
    global $paged, $page;

    if ( is_feed() )
        return $title;

    //strip out separator already added by wp_title()
    $title = str_replace( $sep, '', $title);

    // Add the site description for the home/front page.
    $site_description = get_bloginfo( 'description', 'display' );
    if ( $site_description && ( is_home() || is_front_page() ) )
        $title = "$site_description";

    // Add a page number if necessary.
    if ( $paged >= 2 || $page >= 2 )
        $title = "$title $sep " . sprintf( __( 'Page %s', 'twentytwelve' ), max( $paged, $page ) );

    // Add the site name before the other stuff.
    $title = get_bloginfo( 'name' ) . ' ' . $sep . ' '  . $title;

    return $title;
}