https://www.cmu.ca/js/animation.js?v=20251006

1$(document).ready(function () {
2  jQuery("body").scroll(function () {
3    jQuery(".to-fade-in").each(function () {
4      var top_of_element = jQuery(this).offset().top;
5      var bottom_of_element =
6        jQuery(this).offset().top + jQuery(this).outerHeight();
7      var bottom_of_screen =
8        jQuery(window).scrollTop() + jQuery(window).innerHeight();
9      var top_of_screen = jQuery(window).scrollTop();
10
11      if (
12        bottom_of_screen > top_of_element &&
13        top_of_screen < bottom_of_element &&
14        !jQuery(this).hasClass("fade-in")
15      ) {
16        jQuery(this).addClass("fade-in");
17      }
18    });
19  });
20});