var decimalPointDelimiter1 = '.';
var decimalPointDelimiter2 = ',';

var defaultEmptyOK = true;


// Attempting to make this library run on Navigator 2.0,
// so I'm supplying this array creation routine as per
// JavaScript 1.0 documentation.  If you're using
// Navigator 3.0 or later, you don't need to do this;
// you can use the Array constructor instead.

function makeArray(n) {
   for (var i = 1; i <= n; i++) {
      this[i] = 0
   }
   return this
}

var daysInMonth = makeArray(12);
daysInMonth[1] = 31;
daysInMonth[2] = 29;   // must programmatically check this
daysInMonth[3] = 31;
daysInMonth[4] = 30;
daysInMonth[5] = 31;
daysInMonth[6] = 30;
daysInMonth[7] = 31;
daysInMonth[8] = 31;
daysInMonth[9] = 30;
daysInMonth[10] = 31;
daysInMonth[11] = 30;
daysInMonth[12] = 31;


// Check whether string s is empty.

function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}


// Returns true if string s is empty or
// whitespace characters only.

function isWhitespace (s)

{   var i;

    // Is s empty?
    if (isEmpty(s)) return true;

    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {
        // Check that current character isn't whitespace.
        var c = s.charAt(i);

        if (whitespace.indexOf(c) == -1) return false;
    }

    // All characters are whitespace.
    return true;
}


// Returns true if character c is an English letter
// (A .. Z, a..z).
//
// NOTE: Need i18n version to support European characters.
// This could be tricky due to different character
// sets and orderings for various languages and platforms.

function isLetter (c)
{   return ( ((c >= "a") && (c <= "z")) || ((c >= "A") && (c <= "Z")) )
}



// Returns true if character c is a digit
// (0 .. 9).

function isDigit (c)
{   return ((c >= "0") && (c <= "9"))
}


// Returns true if character c is a letter or digit.

function isLetterOrDigit (c)
{   return (isLetter(c) || isDigit(c))
}


// isInteger (STRING s [, BOOLEAN emptyOK])
//
// Returns true if all characters in string s are numbers.
//
// Accepts non-signed integers only. Does not accept floating
// point, exponential notation, etc.
//
// We don't use parseInt because that would accept a string
// with trailing non-numeric characters.
//
// By default, returns defaultEmptyOK if s is empty.
// There is an optional second argument called emptyOK.
// emptyOK is used to override for a single function call
//      the default behavior which is specified globally by
//      defaultEmptyOK.
// If emptyOK is false (or any value other than true),
//      the function will return false if s is empty.
// If emptyOK is true, the function will return true if s is empty.
//
// EXAMPLE FUNCTION CALL:     RESULT:
// isInteger ("5")            true
// isInteger ("")             defaultEmptyOK
// isInteger ("-5")           false
// isInteger ("", true)       true
// isInteger ("", false)      false
// isInteger ("5", false)     true

function isInteger (s, Field)
{   var i;

        var campo = s;
        if (Field)
                s = s.value;

    if (isEmpty(s))
       defaultEmptyOK;

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {
        // Check that current character is number.
        var c = s.charAt(i);

        if (!isDigit(c))
        {
            if (Field)
                campo.select();
            alert('Este Campo aceita somente Números!');
            return false;
        }
    }

    // All characters are numbers.
    return true;
}



// isSignedInteger (STRING s [, BOOLEAN emptyOK])
//
// Returns true if all characters are numbers;
// first character is allowed to be + or - as well.
//
// Does not accept floating point, exponential notation, etc.
//
// We don't use parseInt because that would accept a string
// with trailing non-numeric characters.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
//
// EXAMPLE FUNCTION CALL:          RESULT:
// isSignedInteger ("5")           true
// isSignedInteger ("")            defaultEmptyOK
// isSignedInteger ("-5")          true
// isSignedInteger ("+5")          true
// isSignedInteger ("", false)     false
// isSignedInteger ("", true)      true

function isSignedInteger (s)
{
        if (isEmpty(s))
       return defaultEmptyOK;

   else {
        var startPos = 0;

        // skip leading + or -
        if ( (s.charAt(0) == "-") || (s.charAt(0) == "+") )
           startPos = 1;
        return (isInteger(s.substring(startPos, s.length)))
    }
}


// isPositiveInteger (STRING s [, BOOLEAN emptyOK])
//
// Returns true if string s is an integer > 0.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isPositiveInteger (s, Field)
{
   if (isEmpty(s))
       return defaultEmptyOK;

        var campo = s;
        if (Field)
                s = s.value;

        if (!isSignedInteger(s))
        {
                if (Field)
                        campo.select();
                return (false);
        }

        if (!(parseInt (s) >= 0))
        {
                if (Field)
                        campo.select();
                alert("O valor deve ser positivo!");
                return (false);
        }

    return (true);
}


// isFloat (STRING s [, BOOLEAN emptyOK])
//
// True if string s is an unsigned floating point (real) number.
//
// Also returns true for unsigned integers. If you wish
// to distinguish between integers and floating point numbers,
// first call isInteger, then call isFloat.
//
// Does not accept exponential notation.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isFloat (s)
{   var i;
    var seenDecimalPoint = false;

    if (isEmpty(s))
       return defaultEmptyOK;

    if (s == decimalPointDelimiter1 || s == decimalPointDelimiter2) return false;

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {
        // Check that current character is number.
        var c = s.charAt(i);

        if ((c == decimalPointDelimiter1 || c == decimalPointDelimiter2) && !seenDecimalPoint) seenDecimalPoint = true;
        else
         if (!isDigit(c))
         {
                 alert ("Valor Inválido!");
            return false;
         }
    }

    // All characters are numbers.
    return true;
}


// isSignedFloat (STRING s [, BOOLEAN emptyOK])
//
// True if string s is a signed or unsigned floating point
// (real) number. First character is allowed to be + or -.
//
// Also returns true for unsigned integers. If you wish
// to distinguish between integers and floating point numbers,
// first call isSignedInteger, then call isSignedFloat.
//
// Does not accept exponential notation.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isSignedFloat (s)
{
        if (isEmpty(s))
       return defaultEmptyOK;

   else {
        var startPos = 0;

        // skip leading + or -
        if ( (s.charAt(0) == "-") || (s.charAt(0) == "+") )
           startPos = 1;
        return (isFloat(s.substring(startPos, s.length)))
    }
}

function isPositiveFloat (s, Field)
{
   if (isEmpty(s))
       return defaultEmptyOK;

        var campo = s;
        if (Field)
                s = s.value;

        if (!isSignedFloat(s))
        {
                if (Field)
                        campo.select();
                return (false);
        }

        if (!(parseFloat (s) >= 0))
        {
                if (Field)
                        campo.select();
                alert("O valor deve ser positivo!");
                return (false);
        }

    return (true);
}





// isYear (STRING s [, BOOLEAN emptyOK])
//
// isYear returns true if string s is a valid
// Year number.  Must be 2 or 4 digits only.
//
// For Year 2000 compliance, you are advised
// to use 4-digit year numbers everywhere.
//
// And yes, this function is not Year 10000 compliant, but
// because I am giving you 8003 years of advance notice,
// I don't feel very guilty about this ...
//
// For B.C. compliance, write your own function. ;->
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isYear (s)
{   if (isEmpty(s))
       return defaultEmptyOK;
    return ((s.length == 2) || (s.length == 4));
}



// isIntegerInRange (STRING s, INTEGER a, INTEGER b [, BOOLEAN emptyOK])
//
// isIntegerInRange returns true if string s is an integer
// within the range of integer arguments a and b, inclusive.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.


function isIntegerInRange (s, a, b)
{   if (isEmpty(s))
       return defaultEmptyOK;

    // Catch non-integer strings to avoid creating a NaN below,
    // which isn't available on JavaScript 1.0 for Windows.
    if (!isInteger(s, false)) return false;

    // Now, explicitly change the type to integer via parseInt
    // so that the comparison code below will work both on
    // JavaScript 1.2 (which typechecks in equality comparisons)
    // and JavaScript 1.1 and before (which doesn't).
    var num = parseInt (s);

    return ((num >= a) && (num <= b));
}



// isMonth (STRING s [, BOOLEAN emptyOK])
//
// isMonth returns true if string s is a valid
// month number between 1 and 12.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isMonth (s)
{   if (isEmpty(s))
       return defaultEmptyOK;
    return isIntegerInRange (eval(s), 1, 12);
}



// isDay (STRING s [, BOOLEAN emptyOK])
//
// isDay returns true if string s is a valid
// day number between 1 and 31.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isDay (s)
{   if (isEmpty(s))
       return defaultEmptyOK;
    return isIntegerInRange (eval(s), 1, 31);
}



// daysInFebruary (INTEGER year)
//
// Given integer argument year,
// returns number of days in February of that year.

function daysInFebruary (year)
{   // February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (  ((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0) ) ) ? 29 : 28 );
}



// isDate (STRING year, STRING month, STRING day)
//
// isDate returns true if string arguments year, month, and day
// form a valid date.
//

function isDate (year, month, day)
{   // catch invalid years (not 2- or 4-digit) and invalid months and days.
    if (!isInteger(year)) return false;
    if (!isInteger(month)) return false;
    if (!isInteger(day)) return false;
    if (! (isYear(year, false) && isMonth(month, false) && isDay(day, false))) return false;

    // Explicitly change type to integer to make code work in both
    // JavaScript 1.1 and JavaScript 1.2.
    var intYear = parseInt(year);
    var intMonth = parseInt(month);
    var intDay = parseInt(day);

    // catch invalid days, except for February
    if (intDay > daysInMonth[intMonth]) return false;

    if ((intMonth == 2) && (intDay > daysInFebruary(intYear))) return false;

    return true;
}

function isBRDate(Data)
{   if (isEmpty(Data))
       return defaultEmptyOK;

        if (Data.value.length==0)
                return true;
        if (!isDate(Data.value.substring(6,10),Data.value.substring(3,5),Data.value.substring(0,2)) ||
                (Data.value.charAt(2)!= '/') || (Data.value.charAt(5)!='/'))
        {
                alert('Campo Data Inválido!');
                Data.select();
                return false;
        }
        else
                return true;
}

function isCCDate(Data)
{
    if (isEmpty(Data.value))
        return defaultEmptyOK;
    if (Data.value.length!=7)
    {
           alert('Campo Data Inválido!');
           Data.select();
           return false;
    }
    var year = Data.value.substring(3,7);
    var month = Data.value.substring(0,2);
    if (! (isYear(year, false) && isMonth(month, false) && (Data.value.charAt(2)== '/')))
    {
        alert('Campo Data Inválido!');
        Data.select();
        return false;
    }
    return true;
}

function CCValidate(Data)
{
    var year = Data.value.substring(3,7);
    var month = Data.value.substring(0,2);
    var now = new Date();
    // verific ase o cartão está vencido
    if ((year<now.getYear()) || (year==now.getYear() && month<now.getMonth()+1))
    {
        alert('Cartão vencido!');
        Data.select();
        return false;
    }
    return true;
}

function DataValidate(Data)
{
    var year = Data.value.substring(6,12);
    var month = Data.value.substring(3,5);
    var day = Data.value.substring(0,2)
    var now = new Date();
    // verific ase o cartão está vencido
    if (year>now.getYear() || (year==now.getYear() && month>now.getMonth()+1) ||
        (year==now.getYear() && month==now.getMonth()+1 && day>now.getDate()))
    {
        Data.select();
        return false;
    }
    return true;
}


function isHour(Hora)
{
        if (isEmpty(Hora.value))
           return defaultEmptyOK;

        if (Hora.value.length>5)
        {
                alert('Campo Hora Inválido!');
                Hora.select();
                return false;
        }
        if (!isInteger(Hora.value.substring(0, 2)))
        {
                alert('Campo Horas só aceita números!');
                Hora.select();
                return false;
        }
        if (Hora.value.substring(0, 2)>23)
        {
                alert('Campo Hora Inválido! As Horas devem ficas entre 00 e 23');
                Hora.select();
                return false;
        }
        if (Hora.value.substring(2,3)!=':')
        {
                alert('Campo Hora Inválido!');
                Hora.select();
                return false;
        }
        if (!isInteger(Hora.value.substring(3, 5)))
        {
                alert('Campo Minutos só aceita números!');
                Hora.select();
                return false;
        }
        if (Hora.value.substring(3, 5)>60)
        {
                alert('Campo Hora Inválido! Os Minutos devem ficar entre 1 e 60!');
                Hora.select();
                return false;
        }
        return true;
}



//
// Valida se o campo é nulo
//
function isNull(Campo, Mensagem)
{
   if (Campo.value == "")
   {
           alert("O Campo "+Mensagem+ " deve ser preenchido!");
           Campo.focus();
           return false;
   }
   return true;
}


/* FUNCTIONS TO NOTIFY USER OF INPUT REQUIREMENTS OR MISTAKES. */


// Display prompt string s in status bar.

function prompt (s)
{   window.status = s
}



// Display data entry prompt string s in status bar.

function promptEntry (s)
{   window.status = pEntryPrompt + s
}




// Notify user that required field theField is empty.
// String s describes expected contents of theField.value.
// Put focus in theField and return false.

function warnEmpty (theField, s)
{   theField.focus()
    alert(mPrefix + s + mSuffix)
    return false
}



// Notify user that contents of field theField are invalid.
// String s describes expected contents of theField.value.
// Put select theField, pu focus in it, and return false.

function warnInvalid (theField, s)
{   theField.focus()
    theField.select()
    alert(s)
    return false
}




/* FUNCTIONS TO INTERACTIVELY CHECK VARIOUS FIELDS. */

// checkString (TEXTFIELD theField, STRING s, [, BOOLEAN emptyOK==false])
//
// Check that string theField.value is not all whitespace.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function checkString (theField, s, emptyOK)
{   // Next line is needed on NN3 to avoid "undefined is not a number" error
    // in equality comparison below.
    if (checkString.arguments.length == 2) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (isWhitespace(theField.value))
       return warnEmpty (theField, s);
    else return true;
}









// Check that string theField.value is a valid Year.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function checkYear (theField, emptyOK)
{   if (checkYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYear(theField.value, false))
       return warnInvalid (theField, iYear);
    else return true;
}


// Check that string theField.value is a valid Month.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function checkMonth (theField, emptyOK)
{   if (checkMonth.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isMonth(theField.value, false))
       return warnInvalid (theField, iMonth);
    else return true;
}


// Check that string theField.value is a valid Day.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function checkDay (theField, emptyOK)
{   if (checkDay.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isDay(theField.value, false))
       return warnInvalid (theField, iDay);
    else return true;
}



// checkDate (yearField, monthField, dayField, STRING labelString [, OKtoOmitDay==false])
//
// Check that yearField.value, monthField.value, and dayField.value
// form a valid date.
//
// If they don't, labelString (the name of the date, like "Birth Date")
// is displayed to tell the user which date field is invalid.
//
// If it is OK for the day field to be empty, set optional argument
// OKtoOmitDay to true.  It defaults to false.

function checkDate (yearField, monthField, dayField, labelString, OKtoOmitDay)
{   // Next line is needed on NN3 to avoid "undefined is not a number" error
    // in equality comparison below.
    if (checkDate.arguments.length == 4) OKtoOmitDay = false;
    if (!isYear(yearField.value)) return warnInvalid (yearField, iYear);
    if (!isMonth(monthField.value)) return warnInvalid (monthField, iMonth);
    if ( (OKtoOmitDay == true) && isEmpty(dayField.value) ) return true;
    else if (!isDay(dayField.value))
       return warnInvalid (dayField, iDay);
    if (isDate (yearField.value, monthField.value, dayField.value))
       return true;
    alert (iDatePrefix + labelString + iDateSuffix)
    return false
}



// Get checked value from radio button.

function getRadioButtonValue (radio)
{   for (var i = 0; i < radio.length; i++)
    {   if (radio[i].checked) { break }
    }
    return radio[i].value
}




// Validate credit card info.

function checkCreditCard (radio, theField)
{   var cardType = getRadioButtonValue (radio)
    var normalizedCCN = stripCharsInBag(theField.value, creditCardDelimiters)
    if (!isCardMatch(cardType, normalizedCCN))
       return warnInvalid (theField, iCreditCardPrefix + cardType + iCreditCardSuffix);
    else
    {  theField.value = normalizedCCN
       return true
    }
}



/*  ================================================================
    Credit card verification functions
    Originally included as Starter Application 1.0.0 in LivePayment.
    20 Feb 1997 modified by egk:
           changed naming convention to initial lowercase
                  (isMasterCard instead of IsMasterCard, etc.)
           changed isCC to isCreditCard
           retained functions named with older conventions from
                  LivePayment as stub functions for backward
                  compatibility only
           added "AMERICANEXPRESS" as equivalent of "AMEX"
                  for naming consistency
    ================================================================ */


/*  ================================================================
    FUNCTION:  isCreditCard(st)

    INPUT:     st - a string representing a credit card number

    RETURNS:  true, if the credit card number passes the Luhn Mod-10
                    test.
              false, otherwise
    ================================================================ */

function isCreditCard(st) {
  // Encoding only works on cards with less than 19 digits
  if (st.length > 19)
    return (false);

  sum = 0; mul = 1; l = st.length;
  for (i = 0; i < l; i++) {
    digit = st.substring(l-i-1,l-i);
    tproduct = parseInt(digit ,10)*mul;
    if (tproduct >= 10)
      sum += (tproduct % 10) + 1;
    else
      sum += tproduct;
    if (mul == 1)
      mul++;
    else
      mul--;
  }
// Uncomment the following line to help create credit card numbers
// 1. Create a dummy number with a 0 as the last digit
// 2. Examine the sum written out
// 3. Replace the last digit with the difference between the sum and
//    the next multiple of 10.

//  document.writeln("<BR>Sum      = ",sum,"<BR>");
//  alert("Sum      = " + sum);

  if ((sum % 10) == 0)
    return (true);
  else
    return (false);

} // END FUNCTION isCreditCard()



/*  ================================================================
    FUNCTION:  isVisa()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid VISA number.

              false, otherwise

    Sample number: 4111 1111 1111 1111 (16 digits)
    ================================================================ */

function isVisa(cc)
{
  if (((cc.length == 16) || (cc.length == 13)) &&
      (cc.substring(0,1) == 4))
    return isCreditCard(cc);
  return false;
}  // END FUNCTION isVisa()




/*  ================================================================
    FUNCTION:  isMasterCard()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid MasterCard
                    number.

              false, otherwise

    Sample number: 5500 0000 0000 0004 (16 digits)
    ================================================================ */

function isMasterCard(cc)
{
  firstdig = cc.substring(0,1);
  seconddig = cc.substring(1,2);
  if ((cc.length == 16) && (firstdig == 5) &&
      ((seconddig >= 1) && (seconddig <= 5)))
    return isCreditCard(cc);
  return false;

} // END FUNCTION isMasterCard()





/*  ================================================================
    FUNCTION:  isAmericanExpress()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid American
                    Express number.

              false, otherwise

    Sample number: 340000000000009 (15 digits)
    ================================================================ */

function isAmericanExpress(cc)
{
  firstdig = cc.substring(0,1);
  seconddig = cc.substring(1,2);
  if ((cc.length == 15) && (firstdig == 3) &&
      ((seconddig == 4) || (seconddig == 7)))
    return isCreditCard(cc);
  return false;

} // END FUNCTION isAmericanExpress()




/*  ================================================================
    FUNCTION:  isDinersClub()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid Diner's
                    Club number.

              false, otherwise

    Sample number: 30000000000004 (14 digits)
    ================================================================ */

function isDinersClub(cc)
{
  firstdig = cc.substring(0,1);
  seconddig = cc.substring(1,2);
  if ((cc.length == 14) && (firstdig == 3) &&
      ((seconddig == 0) || (seconddig == 6) || (seconddig == 8)))
    return isCreditCard(cc);
  return false;
}



/*  ================================================================
    FUNCTION:  isCarteBlanche()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid Carte
                    Blanche number.

              false, otherwise
    ================================================================ */

function isCarteBlanche(cc)
{
  return isDinersClub(cc);
}




/*  ================================================================
    FUNCTION:  isDiscover()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid Discover
                    card number.

              false, otherwise

    Sample number: 6011000000000004 (16 digits)
    ================================================================ */

function isDiscover(cc)
{
  first4digs = cc.substring(0,4);
  if ((cc.length == 16) && (first4digs == "6011"))
    return isCreditCard(cc);
  return false;

} // END FUNCTION isDiscover()





/*  ================================================================
    FUNCTION:  isEnRoute()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid enRoute
                    card number.

              false, otherwise

    Sample number: 201400000000009 (15 digits)
    ================================================================ */

function isEnRoute(cc)
{
  first4digs = cc.substring(0,4);
  if ((cc.length == 15) &&
      ((first4digs == "2014") ||
       (first4digs == "2149")))
    return isCreditCard(cc);
  return false;
}



/*  ================================================================
    FUNCTION:  isJCB()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid JCB
                    card number.

              false, otherwise
    ================================================================ */

function isJCB(cc)
{
  first4digs = cc.substring(0,4);
  if ((cc.length == 16) &&
      ((first4digs == "3088") ||
       (first4digs == "3096") ||
       (first4digs == "3112") ||
       (first4digs == "3158") ||
       (first4digs == "3337") ||
       (first4digs == "3528")))
    return isCreditCard(cc);
  return false;

} // END FUNCTION isJCB()



/*  ================================================================
    FUNCTION:  isAnyCard()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is any valid credit
                    card number for any of the accepted card types.

              false, otherwise
    ================================================================ */

function isAnyCard(cc)
{
  if (!isCreditCard(cc))
    return false;
  if (!isMasterCard(cc) && !isVisa(cc) && !isAmericanExpress(cc) && !isDinersClub(cc) &&
      !isDiscover(cc) && !isEnRoute(cc) && !isJCB(cc)) {
    return false;
  }
  return true;

} // END FUNCTION isAnyCard()



/*  ================================================================
    FUNCTION:  isCardMatch()

    INPUT:    cardType - a string representing the credit card type
              cardNumber - a string representing a credit card number

    RETURNS:  true, if the credit card number is valid for the particular
              credit card type given in "cardType".

              false, otherwise
    ================================================================ */

function isCardMatch (cardType, cardNumber)
{

        cardType = cardType.toUpperCase();
        var doesMatch = true;

        if ((cardType == "VISA") && (!isVisa(cardNumber)))
                doesMatch = false;
        if ((cardType == "MASTERCARD") && (!isMasterCard(cardNumber)))
                doesMatch = false;
        if ( ( (cardType == "AMERICANEXPRESS") || (cardType == "AMEX") )
                && (!isAmericanExpress(cardNumber))) doesMatch = false;
        if ((cardType == "DISCOVER") && (!isDiscover(cardNumber)))
                doesMatch = false;
        if ((cardType == "JCB") && (!isJCB(cardNumber)))
                doesMatch = false;
        if ((cardType == "DINERS") && (!isDinersClub(cardNumber)))
                doesMatch = false;
        if ((cardType == "CARTEBLANCHE") && (!isCarteBlanche(cardNumber)))
                doesMatch = false;
        if ((cardType == "ENROUTE") && (!isEnRoute(cardNumber)))
                doesMatch = false;
        return doesMatch;

}  // END FUNCTION CardMatch()




/*  ================================================================
    The below stub functions are retained for backward compatibility
    with the original LivePayment code so that it should be possible
    in principle to swap in this new module as a replacement for the
    older module without breaking existing code.  (There are no
    guarantees, of course, but it should work.)

    When writing new code, do not use these stub functions; use the
    functions defined above.
    ================================================================ */

function IsCC (st) {
    return isCreditCard(st);
}

function IsVisa (cc)  {
  return isVisa(cc);
}

function IsVISA (cc)  {
  return isVisa(cc);
}

function IsMasterCard (cc)  {
  return isMasterCard(cc);
}

function IsMastercard (cc)  {
  return isMasterCard(cc);
}

function IsMC (cc)  {
  return isMasterCard(cc);
}

function IsAmericanExpress (cc)  {
  return isAmericanExpress(cc);
}

function IsAmEx (cc)  {
  return isAmericanExpress(cc);
}

function IsDinersClub (cc)  {
  return isDinersClub(cc);
}

function IsDC (cc)  {
  return isDinersClub(cc);
}

function IsDiners (cc)  {
  return isDinersClub(cc);
}

function IsCarteBlanche (cc)  {
  return isCarteBlanche(cc);
}

function IsCB (cc)  {
  return isCarteBlanche(cc);
}

function IsDiscover (cc)  {
  return isDiscover(cc);
}

function IsEnRoute (cc)  {
  return isEnRoute(cc);
}

function IsenRoute (cc)  {
  return isEnRoute(cc);
}

function IsJCB (cc)  {
  return isJCB(cc);
}

function IsAnyCard(cc)  {
  return isAnyCard(cc);
}

function IsCardMatch (cardType, cardNumber)  {
  return isCardMatch (cardType, cardNumber);
}


function check_cpf (numcpf)
{
        s = numcpf.value;
        if (s.length == 0)
            return true;
        x = 0;
        soma = 0;
        dig1 = 0;
        dig2 = 0;
        texto = "";
        numcpf1="";
        len = s.length; x = len -1;
        if (len!=11)
        {
            numcpf.select();
            alert ("Numero do CPF invalido !!!");
            return false;
        }
        for (var i=0; i <= len - 3; i++) {
                y = s.substring(i,i+1);
                soma = soma + ( y * x);
                x = x - 1;
                texto = texto + y;
        }
        dig1 = 11 - (soma % 11);
        if (dig1 == 10) dig1=0 ;
        if (dig1 == 11) dig1=0 ;
        numcpf1 = s.substring(0,len - 2) + dig1 ;
        x = 11; soma=0;
        for (var i=0; i <= len - 2; i++) {
                soma = soma + (numcpf1.substring(i,i+1) * x);
                x = x - 1;
        }
        dig2= 11 - (soma % 11);
        if (dig2 == 10) dig2=0;
        if (dig2 == 11) dig2=0;
        if ((dig1 + "" + dig2) == s.substring(len,len-2)) {
                return true;
        }
        numcpf.select();
        alert ("Numero do CPF invalido !!!");
        return false;
}