https://apollosauna.at/assets/sqwplugintextpopup.js

1(function($) {
2    'use strict';
3    $.fn.sqrPopuptext = function() {
4        $(this).each(function() {
5            var fadeIn = true,
6                stage = $(this),
7                items = stage.children('div');
8
9            function handleScroll() {
10                var containerTop = stage.offset().top,
11                    containerHeight = stage.height(),
12                    windowheight = $(window).height(),
13                    scrolltop = $(window).scrollTop();
14
15                if (fadeIn) {
16                    if (containerTop + containerHeight / 3 < scrolltop + windowheight) {
17                        fadeIn = false;
18
19                        items.each(function() {
20                            var item = $(this);
21                            var delay = parseInt(item.attr('data-delay'), 10);
22                            window.setTimeout(function() {
23                                item.removeClass('sqrpopuptextfade sqrpopuptextleft sqrpopuptextright sqrpopuptexttop sqrpopuptextbottom sqrpopuptextzoom');
24                            }, delay);
25                        });
26                    }
27                }
28            }
29
30            $(window).on('scroll', handleScroll);
31            $(window).on('load', handleScroll);
32
33        });
34    };
35})(jQuery);
36
37$(document).ready(function() {
38    $('.sqrpopuptext').sqrPopuptext();
39});