The Flex Show - Creating Flex Components - Episode 10: Layout Logic Part 4

Oops, sorry. I added a few methods during my own development. this is the code:

/**
* Calculates the number of the days in the first week of the given month
*
* @param date            A day in the month we want to find out how many days it has
* @param firstDayOfWeek   The first day of the week, 0 (Sunday) - 6 ( Saturday ); 0 is the default.
* Will probably be used primarily for localization purposes
*
* @return The number of days in the first week of the month, taking into account the first day of the week
*
*/
public static function daysInFirstWeekOfMonth(date : Date, firstDayOfWeek : int = 0):Number{
   var result : Number = 1;
   result = 7 - (DateUtils.dayOfWeek(date) - firstDayOfWeek);
   if(result >7 ){
      result = result - 7;
   }
   return result;
}