Scroll to top on multi-page form ID 3

<?php
// http://www.gravityhelp.com/forums/topic/how-to-manage-page-breaks-to-go-to-top-of-page
// scroll to top on load for multi-page form
// only enqueue the scroll to top script when form 3 is being embedded
add_action('gform_enqueue_scripts_3', 'enqueue_scroll_to_top', 10, 2);
function enqueue_scroll_to_top($form, $is_ajax) {
    // enqueue the scroll to top script which is stored in the child theme /js/ subdirectory, and depends on jQuery
    wp_enqueue_script('scroll_to_top', get_stylesheet_directory_uri() . '/js/scroll-to-top.js', array('jquery'));
}