Javascript скрипт перестал работать, и я не могу понять, почему? [закрыто]

function millisecondsToString(milliseconds) {
    var oneHour = 3600000;
    var oneMinute = 60000;
    var oneSecond = 1000;
    var seconds = 0;
    var minutes = 0;
    var hours = 0;
    var result;

    if (milliseconds >= oneHour) {
        hours = Math.floor(milliseconds / oneHour);
    }

    milliseconds = hours > 0 ? (milliseconds - hours * oneHour) : milliseconds;

    if (milliseconds >= oneMinute) {
        minutes = Math.floor(milliseconds / oneMinute);
    }

    milliseconds = minutes > 0 ? (milliseconds - minutes * oneMinute) : milliseconds;

    if (milliseconds >= oneSecond) {
        seconds = Math.floor(milliseconds / oneSecond);
    }

    milliseconds = seconds > 0 ? (milliseconds - seconds * oneSecond) : milliseconds;

    if (hours > 0) {
        result = (hours > 9 ? hours : "0" + hours) + ":";
    } else {
        result = "00:";
    }

    if (minutes > 0) {
        result += (minutes > 9 ? minutes : "0" + minutes) + ":";
    } else {
        result += "00:";
    }

    if (seconds > 0) {
        result += (seconds > 9 ? seconds : "0" + seconds) + ":";
    } else {
        result += "00:";
    }

    if (milliseconds > 0) {
        result += (milliseconds > 9 ? milliseconds : "0" + milliseconds);
    } else {
        result += "00";
    }

    return result;
}