function validateEmail(eMail)  {
		emailStr = eMail.value;
		a = emailStr.split("@");
		if (a.length !=2) {
			alert('Email invalid.');
			eMail.focus();
			return false;
		} else {
			b = a[1].split(".");
			if (b.length < 2) {
				alert ('Email invalid.');
				eMail.focus();
				return false;
			}
		}
		return true;
}

function validateNumber(myField) {
      numberStr == myField.value;
      if ((numberStr != "") && (isNaN(numberStr)))
       {
          alert('Quantity must be a number.');
      myField.focus();
       return false;
       }
      if (numberStr == 0)
       {
          alert('Quantity can not be zero.');
      myField.focus();
       return false;
       }
    return true;
}