https://luther2017.de/typo3conf/ext/bootstrap_package/Resources/Pu…/Libs/supportedBrowser0df9.js?1509224819

1var QueryString = function () {
2    // This function is anonymous, is executed immediately and
3    // the return value is assigned to QueryString!
4    var query_string = {};
5    var query = window.location.search.substring(1);
6    var vars = query.split("&");
7    for (var i=0;i<vars.length;i++) {
8        var pair = vars[i].split("=");
9        // If first entry with this name
10        if (typeof query_string[pair[0]] === "undefined") {
11            query_string[pair[0]] = decodeURIComponent(pair[1]);
12            // If second entry with this name
13        } else if (typeof query_string[pair[0]] === "string") {
14            var arr = [ query_string[pair[0]],decodeURIComponent(pair[1]) ];
15            query_string[pair[0]] = arr;
16            // If third or later entry with this name
17        } else {
18            query_string[pair[0]].push(decodeURIComponent(pair[1]));
19        }
20    }
21    return query_string;
22}();
23
24var msie = document.documentMode;
25if (msie < 10) {
26    window.location.href = "/oldbrowser";
27} else {
28    if(QueryString.ignoreOldBrowserWarning !== "1" && Modernizr.mq('only all') === false) {
29        window.location.href = "/oldbrowser";
30    }
31}