function checkDateY() {

	var myDayStrY = document.edit.year_of_birth_day.value;
	var myMonthStrY = document.edit.year_of_birth_month.value;
	var myYearStrY = document.edit.year_of_birth_year.value;
	var myMonth = new Array('January','February','March','April','May','June','July','August','September','October','November','December'); 
	
	if (myMonthStrY == '01') myMonthStrY = '0';
	if (myMonthStrY == '02') myMonthStrY = '1';
	if (myMonthStrY == '03') myMonthStrY = '2';
	if (myMonthStrY == '04') myMonthStrY = '3';
	if (myMonthStrY == '05') myMonthStrY = '4';
	if (myMonthStrY == '06') myMonthStrY = '5';
	if (myMonthStrY == '07') myMonthStrY = '6';
	if (myMonthStrY == '08') myMonthStrY = '7';
	if (myMonthStrY == '09') myMonthStrY = '8';
	if (myMonthStrY == '10') myMonthStrY = '9';
	if (myMonthStrY == '11') myMonthStrY = '10';
	if (myMonthStrY == '12') myMonthStrY = '11';

	var myDateStrY = myDayStrY + ' ' + myMonth[myMonthStrY] + ' ' + myYearStrY;
	
	/* Using form values, create a new date object
	using the setFullYear function */
	var myDateY = new Date();
	
	myDateY.setFullYear( myYearStrY, myMonthStrY, myDayStrY );
		
	if (myDateY.getMonth() != myMonthStrY) {

		if (myDateY.getMonth() != myMonthStrY)  alert( 'I\'m sorry, but you entered invalid date (year of birth).' );

		return false;

	} else {
	
		return true;
	}
	
}