function dateFromString(dateStr) {
    // dateStr
    // yyyymmddhhmmss
    return new Date(dateStr.substring(0, 4), parseInt(dateStr.substr(4, 2), 10) - 1, dateStr.substr(6, 2), dateStr.substr(8, 2), dateStr.substr(10, 2), dateStr.substr(12, 2));
}