Wordpress Custom Login Screen Function

/*
** Original Source:  WP Cookies - http://www.wpcookies.com/how-to-customize-wordpress-login-page/
** Paste this in your functions.php file anywhere before the close
** Pasted by Lab Coat Media
*/

function custom_login() {
    echo '<link rel="stylesheet" type="text/css" href="' . get_bloginfo('stylesheet_directory') . '/custom-login.css" />';

    // Notes: Make sure to add a new file in your stylesheet directory labeled "custom-login.css"
 }
 add_action('login_head', 'custom_login');