https://www.hohberg.de/fileadmin/templates/js/contrast.js

1/*IF THIS MESSAGE IS NOT REMOVED SERVERMANAGER MAY OVERRIDE THE FILE*/
2
3document.addEventListener("DOMContentLoaded", function () {
4    document.getElementsByTagName("head")[0].insertAdjacentHTML(
5        "beforeend",
6        "<link rel=\"alternate stylesheet\" type=\"text/css\" media=\"screen\" href=\"./fileadmin/templates/css/contrast.css\" />");
7
8    var style = readCookie("style");
9    if (style) {
10        setActiveStyleSheet(style);
11    }
12    else {
13        setActiveStyleSheet("normal.css");
14    }
15
16});
17
18
19function createCookie(name, value, days) {
20    if (days) {
21        var date = new Date();
22        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
23        var expires = "; expires=" + date.toGMTString();
24    } else {
25        expires = "";
26    }
27
28    document.cookie = name + "=" + value + expires + "; path=/";
29}
30
31function readCookie(name) {
32    var nameEQ = name + "=";
33    var ca = document.cookie.split(';');
34
35    for (var i = 0; i < ca.length; i++) {
36        var c = ca[i];
37        while (c.charAt(0) == ' ') {
38            c = c.substring(1, c.length);
39        }
40        if (c.indexOf(nameEQ) == 0) {
41            return c.substring(nameEQ.length, c.length);
42        }
43    }
44    return null;
45}
46
47function toggleContrastMode() {
48    console.log("style");
49    var style = readCookie("style");
50    if (style == "contrast.css") {
51        setActiveStyleSheet("normal.css");
52    }
53    else {
54        setActiveStyleSheet("contrast.css");
55    }
56}
57
58function setActiveStyleSheet(title) {
59    if (title == "contrast.css") {
60        $('link[href*="contrast.css"]').attr('rel', 'stylesheet');
61        createCookie("style", "contrast.css", 365);
62    }
63    if (title == "normal.css") {
64        $('link[href*="contrast.css"]').attr('rel', 'alternate stylesheet');
65        createCookie("style", "normal.css", 365);
66    }
67}