Based on : http://en.wikipedia.org/wiki/International_Bank_Account_Number#Validating_the_IBAN
Func _IbanValidate($iban)
;~ 1. Parse string, but I don't check if IBAN length is correct as per the country, no need.
$iban = StringRegExpReplace ( StringUpper($iban), "[^A-Z0-9]", "")
;~ 2. Move the four initial characters to the end of the string
$IBAN_iso = StringLeft($iban, 2) ; If need to know Country code
$IBAN_key = StringMid($iban, 3, 2) ; next 2 digits
$IBAN_bban= StringMid($iban