generate control char of italian fiscal code
function getControlChar(surname, name, birth, gender, town) {
if(surname == "")
return "";
if(name == "")
return "";
if(birth == "")
return "";
if(gender == "")
return "";
if(town == "")
return "";
birth = birth.substring(2);
var vowels = "AEIOU";
var consonants = "BCDFGHJLMNPQRSTVWXYZ";
var surname_out = "";
var name_out = "";
var town_out = "";
var i = 0;
var j = 0;
var c = 0;
var ch = "";
var temp = "";
for (i = 0; i < surname.length; i++) {
ch = surname.substring(i, i+1);
for (j = 0; j < vowels.length; j++) {
temp = vowels.substring(