var interv = setInterval(CounterTimer, 1000);
var leave = "0";

function CounterTimerLength(leavevalue) {
    leave = leavevalue;
}

function CounterTimer() {
    if (leave != 0) {
        var day = Math.floor(leave / (60 * 60 * 24))
        var hour = Math.floor(leave / 3600) - (day * 24)
        var minute = Math.floor(leave / 60) - (day * 24 * 60) - (hour * 60)
        var second = Math.floor(leave) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60)

        hour = hour < 10 ? "0" + hour : hour;
        minute = minute < 10 ? "0" + minute : minute;
        second = second < 10 ? "0" + second : second;


        leave = leave - 1;

        if (document.all) {
            document.getElementById("days").innerText = day;
            document.getElementById("hours").innerText = hour;
            document.getElementById("minutes").innerText = minute;
            document.getElementById("seconds").innerText = second;
        }
        else {
            document.getElementById("days").textContent = day;
            document.getElementById("hours").textContent = hour;
            document.getElementById("minutes").textContent = minute;
            document.getElementById("seconds").textContent = second;
        }
    }
}