https://internationalafricaninstitute.org/ecma-scripts/style-changer.js?v=1529696687

1jQuery(document).ready(function ($) {
2    var waitingForPageRefresh = false;
3    var style = readCookie("styleDefCon");
4
5    $('.style-toggle-btn').attr('href','');
6    $('.style-toggle-btn').click(function () {
7        var newStyle;
8        var currentStyle;
9        var styles;
10        if (waitingForPageRefresh)
11            return;
12        currentStyle = readCookie("styleDefCon");
13        styles = site_styles || ['light'];
14        newStyle = styles[(currentStyle?(styles.indexOf(currentStyle) + 1):1) % styles.length];
15        createCookie("styleDefCon", newStyle, 365);
16        if (readCookie("styleDefCon") != newStyle) {
17            alert("Cookies must be enabled to change page style");
18            return false;
19        }
20        // alert('The page will refresh changing style '+currentStyle+' to '+newStyle);
21    });
22
23    function createCookie(name, value, days) {
24        if (days) {
25            var date = new Date();
26            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
27            var expires = "; expires=" + date.toGMTString();
28        }
29        else expires = "";
30        document.cookie = name + "=" + value + expires + "; path=/";
31    }
32
33    function readCookie(name) {
34        var nameEQ = name + "=";
35        var ca = document.cookie.split(';');
36        for (var i = 0; i < ca.length; i++) {
37            var c = ca[i];
38            while (c.charAt(0) == ' ') c = c.substring(1, c.length);
39            if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
40        }
41        return null;
42    }
43
44});