function isDate(myDate)
{
	var myDate1 = new Date(myDate);
	
	if (isNaN(myDate1))
		return false;
	else
		return true;
	
	myDate1 = null;
}

function isNumeric(myString)
{
	return ( parseFloat(myString) == myString );
}

function isValidSex(mySex)
{
	var sexPattern = /^[MF]{1}$/;
	return sexPattern.test(mySex);
}