Функция вывода даты формата YYY-MM-DD HH:MM:SS

function ymdhms() {
  now = new Date();
  year = "" + now.getFullYear();
  month = "" + (now.getMonth() + 1); if (month.length == 1) month = "0" + month;
  day = "" + now.getDate(); if (day.length == 1) day = "0" + day;
  hour = "" + now.getHours(); if (hour.length == 1) hour = "0" + hour;
  minute = "" + now.getMinutes(); if (minute.length == 1) minute = "0" + minute;
  second = "" + now.getSeconds(); if (second.length == 1) second = "0" + second;
  return year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + second;
}