FlexOOP

/**
 * Gets the days in the month
 * 
 * @param date	The date to check
 * 
 * @return		The number of days in the month
 */
public static function daysInMonth( date:Date ):Number {
	// get the first day of the next month
	var _localDate:Date = new Date( date.fullYear, DateUtils.dateAdd( DateUtils.MONTH, 1, date ).month, 1 );
	// subtract 1 day to get the last day of the requested month
	return DateUtils.dateAdd( DateUtils.DAY_OF_MONTH, -1, _localDate ).date;
}

import com.flexoop.utilities.dateutils.DateUtils;

private var _dim:Number = DateUtils.daysInMonth( new Date( 2008, 1 ) );