https://www.bbecas.org/wp-content/themes/edhub/assets/js/rt-parallax.js?ver=1.7.6

1/*! Copyright (c) 2016 THE ULTRASOFT (http://theultrasoft.com)
2 * Licensed under the MIT License (LICENSE.txt).
3 *
4 * Project: Parallaxie
5 * Version: 0.5
6 *
7 * Requires: jQuery 1.9+
8 */
9
10(function ($) {
11
12    $.fn.parallaxie = function (options) {
13
14        var options = $.extend({
15            speed: 0.2,
16            repeat: 'no-repeat',
17            size: 'cover',
18            pos_x: 'center',
19            offset: 0,
20        }, options);
21
22        this.each(function () {
23
24            var $el = $(this);
25            var local_options = $el.data('parallaxie');
26            if (typeof local_options != 'object') local_options = {};
27            local_options = $.extend({}, options, local_options);
28
29            var image_url = $el.data('image');
30            if (typeof image_url == 'undefined') {
31                image_url = $el.css('background-image');
32                if (!image_url) return;
33
34                // APPLY DEFAULT CSS
35                var pos_y = local_options.offset + ($el.offset().top - $(window).scrollTop()) * (1 - local_options.speed);
36                $el.css({
37                    'background-image': image_url,
38                    'background-size': local_options.size,
39                    'background-repeat': local_options.repeat,
40                    'background-attachment': 'fixed',
41                    'background-position': local_options.pos_x + ' ' + pos_y + 'px',
42                });
43
44                $(window).scroll(function () {
45                        var pos_y = local_options.offset + ($el.offset().top - $(window).scrollTop()) * (1 - local_options.speed);
46                        $el.data('pos_y', pos_y);
47                        $el.css('background-position', local_options.pos_x + ' ' + pos_y + 'px');
48                    }
49                );
50            }
51        });
52        return this;
53    };
54}(jQuery));