aqDateTime issue

function Test1()

{        

  var date = aqDateTime.SetDateElements(2011, 10, 31);

  var monthsCount = 1;

  if (monthsCount < 0)

  {

    Log.Message("You cannot specify a negative value");

    return;

  }

  var newDate = AddMonths(date, monthsCount); 

  Log.Message(date); 

  Log.Message("+ 1 month");

  Log.Message(newDate);

}





function AddMonths(date, monthsCount)

{

  var monthsInLastYear = monthsCount % 12;

  var yearsCount = (monthsCount - monthsInLastYear) / 12;

  var year = aqDateTime.GetYear(date) + yearsCount; 

  var month = aqDateTime.GetMonth(date) + monthsInLastYear;

  if (12 < month) {

    year++;

    month = month % 12;

  }

  var daysCount = GetDaysCount(year, month);

  var day = aqDateTime.GetDay(date);

  if (day > daysCount) {

    var daysToEndOfMonth = GetDaysCount(aqDateTime.GetYear(date), aqDateTime.GetMonth(date)) - day;

    day = daysCount - daysToEndOfMonth;

  }

  var hours = aqDateTime.GetHours(date);

  var minutes = aqDateTime.GetMinutes(date);

  var seconds = aqDateTime.GetSeconds(date);

  return aqDateTime.SetDateTimeElements(year, month, day, hours, minutes, seconds);

}





function GetDaysCount(year, month)

{

  var daysCount = 31;

  if (7 < month)

    month--;

  if (0 == month % 2) {

    if (2 != month) {

      daysCount = 30;

    }

    else {

      if (!aqDateTime.IsLeapYear(year)) {

        daysCount = 28;

      }

      else {

        daysCount = 29;

      }

    }

  }

  return daysCount;

}