newJSfix

function addZero(i) {
    if (i < 10) {
        i = "0" + i;
    }
    return i;
}

function curTime() {
    var d = new Date();
    var x = document.getElementById("time");
    var h = addZero(d.getHours());
    var m = addZero(d.getMinutes());
    var s = addZero(d.getSeconds());
    x.innerHTML = h + "." + m;
}

var closest = function(a, x) {
    var lo, hi;
    for (var i = a.length; i--;) {
        if (a[i] <= x && (lo === undefined || lo < a[i])) lo = a[i];
        if (a[i] >= x && (hi === undefined || hi > a[i])) hi = a[i];
    };
    return [lo, hi];
}

var toHHMM = (secs) => {
    var sec_num = parseInt(secs, 10)
    var hours   = Math.floor(sec_num / 3600) % 24
    var minutes = Math.floor(sec_num / 60) % 60
    return [hours,minutes]
        .map(v => v < 10 ? "0" + v : v)
        .filter((v,i) => v !== "00" || i > 0)
        .join(":")
}

function includes(k) {
  for(var i=0; i < this.length; i++){
    if( this[i] === k || ( this[i] !== this[i] && k !== k ) ){
      return true;
    }
  }
  return false;
}

var timeTable = Array();

window.onload = function () {
	curTime();

	var days = ['Søndag', 'Mandag', 'Tirsdag', 'Onsdag', 'Torsdag', 'Fredag', 'Lørdag'];
	var months = ['Januar', 'Februar', 'Marts', 'April', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'December'];
	var curDates = new Date();
	var dayName = days[curDates.getDay()];
	var dayDate = curDates.getDate();
	var dayMonth = months[curDates.getMonth()];

	$("#date").html(dayName + " d. " + dayDate + " " + dayMonth);

	$("table tr").each(function(i){
		var currentSelector = $(this);

		var timeFrom = currentSelector.attr("timeFrom");
		var timeTo = currentSelector.attr("timeTo");

		var timeFromVal = timeFrom.split(':');
		var timeToVal = timeTo.split(':');

		var timeFromSec = (+timeFromVal[0]) * 60 * 60 + (+timeFromVal[1]) * 60;
		var timeToSec = (+timeToVal[0]) * 60 * 60 + (+timeToVal[1]) * 60;

		timeTable.includes = includes;

		if (timeTable.includes(timeFromSec)) {
			// Already Exists
		} else {
			timeTable.push(timeFromSec);
		}
		if (timeTable.includes(timeToSec)) {
			// Already Exists
		} else {
			timeTable.push(timeToSec);
		}
	})
	lastTime = timeTable.slice(-1)[0];

    var curDate = new Date();
    var hours = curDate.getHours();
    var mins = curDate.getMinutes();
	currentTime = (hours * 60 * 60) + (mins * 60);

	minMax = closest(timeTable, currentTime);

	curFrom = minMax[0];
	curTo = minMax[1];
	$("table tr").each(function(i){
		if ($(this).attr("timeFrom") == toHHMM(curFrom) && $(this).attr("timeTo") == toHHMM(curTo) || $(this).attr("timeFrom") == toHHMM(currentTime) && curTo) {
			$(this).addClass("active");
		} else {
			$(this).removeClass("active");
		}
	});
	if (!curFrom) {
		status2 = "Første time begynger kl. " + toHHMM(curTo);
		$(".split > div:first-child").removeClass("hide");
	} else if (!curTo || currentTime == lastTime) {
		status2 = "Skolen er slut for i dag";
		$(".split > div:first-child").addClass("hide");
	} else if (!$("*").hasClass("active")) {
		status2 = "Der er frikvarter - Næste lektion starter kl. " + toHHMM(curTo);
		$(".split > div:first-child").removeClass("hide");
	} else {
		status2 = "I Skole";
		$(".split > div:first-child").removeClass("hide");
	}
	if (status2 == "I Skole") {

		percentage = (currentTime - curFrom) / (curTo - curFrom) * 100;
		if (currentTime == curFrom) {
			percentage = 0;
		}
		$("#progress").css("width", percentage + "%");
		$("#progress").html(status2).removeClass("progressInactive");
	} else {
		$("#progress").html(status2).addClass("progressInactive");
	}
}
window.setInterval(function(){
	curTime();

    var curDate = new Date();
    var hours = curDate.getHours();
    var mins = curDate.getMinutes();
	currentTime = (hours * 60 * 60) + (mins * 60);

	minMax = closest(timeTable, currentTime);

	curFrom = minMax[0];
	curTo = minMax[1];
	$("table tr").each(function(i){
		if ($(this).attr("timeFrom") == toHHMM(curFrom) && $(this).attr("timeTo") == toHHMM(curTo) || $(this).attr("timeFrom") == toHHMM(currentTime) && curTo) {
			$(this).addClass("active");
		} else {
			$(this).removeClass("active");
		}
	});
	if (!curFrom) {
		status2 = "Første time begynger kl. " + toHHMM(curTo);
		$(".split > div:first-child").removeClass("hide");
	} else if (!curTo || currentTime == lastTime) {
		status2 = "Skolen er slut for i dag";
		$(".split > div:first-child").addClass("hide");
	} else if (!$("*").hasClass("active")) {
		status2 = "Der er frikvarter - Næste lektion starter kl. " + toHHMM(curTo);
		$(".split > div:first-child").removeClass("hide");
	} else {
		status2 = "I Skole";
		$(".split > div:first-child").removeClass("hide");
	}
	if (status2 == "I Skole") {

		percentage = (currentTime - curFrom) / (curTo - curFrom) * 100;
		if (currentTime == curFrom) {
			percentage = 0;
		}
		$("#progress").css("width", percentage + "%");
		$("#progress").html(status2).removeClass("progressInactive");
	} else {
		$("#progress").html(status2).addClass("progressInactive");
	}
}, 1000);