Calculate Begin and End Dates for Month/Year

Calculate the Begin and End dates from a given Period/Year combination or to calculate the month’s begin and end dates from a given date. Like if you are given Period=3, Year=9, the Begin and End dates will be 03/01/2009 and 03/30/2009 respectively. Similarly if you were given a date say – 2/17/2009, the return Begin & End dates will be 02/01/2009 and 02/28/2009.