var is_safari = navigator.userAgent.indexOf("Safari") > -1;
var is_chrome = navigator.userAgent.indexOf('Chrome') > -1;
if ((is_chrome) && (is_safari)) {is_safari = false;}
if (is_safari) {
    if (!document.cookie.match(/^(.*;)?\s*fixed\s*=\s*[^;]+(.*)?$/)) {
        document.cookie = 'fixed=fixed; expires=Tue, 19 Jan 2038 03:14:07 UTC; path=/';
        window.location.replace("");
    }
}