$(function () {
    'use strict';

    var grayscaleconfig = window.power_grayscale_config;
    var startdatetime = new date(grayscaleconfig.startdatetime);
    var enddatetime = new date(grayscaleconfig.enddatetime);
    var nowdate = new date();

    if (grayscaleconfig.enabled &
        nowdate.gettime() >= startdatetime.gettime() &
        nowdate.gettime() <= enddatetime.gettime()) {
        var navstr = navigator.useragent.tolowercase();
        if (navstr.indexof("msie 10.0") !== -1 || navstr.indexof("rv:11.0") !== -1) {
            $.when($.ajax()).then(function () {
                grayscale($("html"));
            });

            $('.mainnav li a').hover(
                function () {
                    $(this).css("background", "#545454");
                },
                function () {
                    $(this).css("background", "#585858");
                });

            submenufixed = true;
            var submenutop = $(".topnav").offset().top;
            $(window)
                .scroll(function () {
                    if (submenufixed) {
                        if ($(window).scrolltop() >= submenutop) {
                            $(".topnav").addclass("topnav-fixed");
                            $(".topnav").css("background", "#585858");
                        } else {
                            $(".topnav").removeclass("topnav-fixed");
                            $(".topnav").css("background", "");
                        }
                    }
                });
        }
    }
})