// SUMMARY
//
// This is a set of JavaScript functions for validating input on 
// an HTML form.  Functions are provided to validate:
//      - email addresses
//	- dates (entry of year, month, and day and validity of combined date)
//
// Supporting utility functions validate that:
//
//      - characters are Letter, Digit, or LetterOrDigit
//      - strings are a Signed, Positive, Negative, Nonpositive, or
//        Nonnegative integer
//      - strings are a Float or a SignedFloat
//      - strings are Alphabetic, Alphanumeric, or Whitespace
//      - strings contain an integer within a specified range
//
// Functions are also provided to interactively check the
// above kinds of data and prompt the user if they have
// been entered incorrectly.
//
// Other utility functions are provided to:
//
// 	- remove from a string characters which are/are not 
//	  in a "bag" of selected characters	
// 	- reformat a string, adding delimiter characters
//	- strip whitespace/leading whitespace from a string
//
// Many of the below functions take an optional parameter eok (for "emptyOK")
// which determines whether the empty string will return true or false.
// Default behavior is controlled by global variable defaultEmptyOK.
//
// BASIC DATA VALIDATION FUNCTIONS:
//
// isWhitespace (s)                    Check whether string s is empty or whitespace.
// isLetter (c)                        Check whether character c is an English letter 
// isDigit (c)                         Check whether character c is a digit 
// isLetterOrDigit (c)                 Check whether character c is a letter or digit.
// isInteger (s [,eok])                True if all characters in string s are numbers.
// isSignedInteger (s [,eok])          True if all characters in string s are numbers; leading + or - allowed.
// isPositiveInteger (s [,eok])        True if string s is an integer > 0.
// isNonnegativeInteger (s [,eok])     True if string s is an integer >= 0.
// isNegativeInteger (s [,eok])        True if s is an integer < 0.
// isNonpositiveInteger (s [,eok])     True if s is an integer <= 0.
// isFloat (s [,eok])                  True if string s is an unsigned floating point (real) number. (Integers also OK.)
// isSignedFloat (s [,eok])            True if string s is a floating point number; leading + or - allowed. (Integers also OK.)
// isAlphabetic (s [,eok])             True if string s is English letters 
// isAlphanumeric (s [,eok])           True if string s is English letters and numbers only.
// isEmail (s [,eok])                  True if string s is a valid email address.
// isYear (s [,eok])                   True if string s is a valid Year number.
// isIntegerInRange (s, a, b [,eok])   True if string s is an integer between a and b, inclusive.
// isMonth (s [,eok])                  True if string s is a valid month between 1 and 12.
// isDay (s [,eok])                    True if string s is a valid day between 1 and 31.
// daysInFebruary (year)               Returns number of days in February of that year.
// isDate (year, month, day)           True if string arguments form a valid date.
// CPFValido(s)						   Retorna true se o CPF for válido. 

// FUNCTIONS TO REFORMAT DATA:
//
// stripCharsInBag (s, bag)            Removes all characters in string bag from string s.
// stripCharsNotInBag (s, bag)         Removes all characters NOT in string bag from string s.
// stripWhitespace (s)                 Removes all whitespace characters from s.
// stripInitialWhitespace (s)          Removes initial (leading) whitespace characters from s.
// reformat (TARGETSTRING, STRING,     Function for inserting formatting characters or
//   INTEGER, STRING, INTEGER ... )       delimiters into TARGETSTRING.                                       

// FUNCTIONS TO PROMPT USER:
//
// prompt (s)                          Display prompt string s in status bar.
// promptEntry (s)                     Display data entry prompt string s in status bar.
// warnEmpty (theField, s)             Notify user that required field theField is empty.
// warnInvalid (theField, s)           Notify user that contents of field theField are invalid.
// fn_proxima(obj)                     Seta o Focus do navegador no proximo campo quando o valor for igual ao maxlrngth


// FUNCTIONS TO INTERACTIVELY CHECK FIELD CONTENTS:
//
// checkString (theField, s [,eok])    Check that theField.value is not empty or all whitespace.
// checkEmail (theField [,eok])        Check that theField.value is a valid Email.
// checkYear (theField [,eok])         Check that theField.value is a valid Year.
// checkMonth (theField [,eok])        Check that theField.value is a valid Month.
// checkDay (theField [,eok])          Check that theField.value is a valid Day.
// checkDate (yearField, monthField, dayField, labelString, OKtoOmitDay)
//                                     Check that field values form a valid date.
// getRadioButtonValue (radio)         Get checked value from radio button.



// VARIABLE DECLARATIONS

var digits = "0123456789";
var lowercaseLetters = "abcdefghijklmnopqrstuvwxyz"

var uppercaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"


// whitespace characters
var whitespace = " \t\n\r";


// decimal point character differs by language and culture
var decimalPointDelimiter = ","


// CONSTANT STRING DECLARATIONS
// (grouped for ease of translation and localization)

// m is an abbreviation for "missing"

var mPrefix = "Voce nao entrou com o valor no campo "
var mSuffix = ". Este é um campo obrigatorio. Favor entrar com o valor do campo agora."

// s is an abbreviation for "string"

var sUSLastName = "Last Name"
var sUSFirstName = "First Name"
var sWorldLastName = "Family Name"
var sWorldFirstName = "Given Name"
var sTitle = "Cargo"
var sCompanyName = "Empresa"
var sUSAddress = "Rua"
var sWorldAddress = "Endereco"
var sCity = "Cidade"
var sCountry = "Pais"
var sWorldPostalCode = "Codigo Postal"
var sFax = "Fax"
var sDateOfBirth = "Data de Nascimento"
var sEmail = "E-mail"
var sOtherInfo = "Outras Informacoes"




// i is an abbreviation for "invalid"

var iEmail = "Este campo deve conter um E-mail válido."
var iDay = "Este campo deve conter um dia entre 1 e 31."
var iMonth = "Este campo deve conter um mês 1 e 12."
var iYear = "Este campo deve conter um ano com 2 ou 4 digitos."
var iDatePrefix = "O Dia, Mês e Ano para "
var iDateSuffix = " não compõem uma data vália."



// p is an abbreviation for "prompt"

var pEntryPrompt = "Por favor, forneça "
var pEmail = "um e-mail válido."
var pDay = "um dia entre 1 e 31."
var pMonth = "um mês entre 1 e 12"
var pYear = "um ano com 2 ou 4 dígitos."


// Global variable defaultEmptyOK defines default return value 
// for many functions when they are passed the empty string. 
// By default, they will return defaultEmptyOK.
//
// defaultEmptyOK is false, which means that by default, 
// these functions will do "strict" validation.  Function
// isInteger, for example, will only return true if it is
// passed a string containing an integer; if it is passed
// the empty string, it will return false.
//
// You can change this default behavior globally (for all 
// functions which use defaultEmptyOK) by changing the value
// of defaultEmptyOK.
//
// Most of these functions have an optional argument emptyOK
// which allows you to override the default behavior for 
// the duration of a function call.
//
// This functionality is useful because it is possible to
// say "if the user puts anything in this field, it must
// be an integer (or a phone number, or a string, etc.), 
// but it's OK to leave the field empty too."
// This is the case for fields which are optional but which
// must have a certain kind of content if filled in.

var defaultEmptyOK = false




// 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) {
//*** BUG: If I put this line in, I get two error messages:
//(1) Window.length can't be set by assignment
//(2) daysInMonth has no property indexed by 4
//If I leave it out, the code works fine.
//   this.length = 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)
{   if ((s == null) || (s.length == 0))
	{
		return true;
	}
	else
	{
	    for (var i = 0 ; i < s.length ; i++) 
	    {
	        if (s.charAt(i) != ' ') 
		    {
			    return false;
			}
		}
    }
    return true;
}


// 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;
}



// Removes all characters which appear in string bag from string s.

function stripCharsInBag (s, bag)

{   var i;
    var returnString = "";

    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }

    return returnString;
}



// Removes all characters which do NOT appear in string bag 
// from string s.

function stripCharsNotInBag (s, bag)

{   var i;
    var returnString = "";

    // Search through string's characters one by one.
    // If character is in bag, append to returnString.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) != -1) returnString += c;
    }

    return returnString;
}



// Removes all whitespace characters from s.
// Global variable whitespace (see above)
// defines which characters are considered whitespace.

function stripWhitespace (s)

{   return stripCharsInBag (s, whitespace)
}




// WORKAROUND FUNCTION FOR NAVIGATOR 2.0.2 COMPATIBILITY.
//
// The below function *should* be unnecessary.  In general,
// avoid using it.  Use the standard method indexOf instead.
//
// However, because of an apparent bug in indexOf on 
// Navigator 2.0.2, the below loop does not work as the
// body of stripInitialWhitespace:
//
// while ((i < s.length) && (whitespace.indexOf(s.charAt(i)) != -1))
//   i++;
//
// ... so we provide this workaround function charInString
// instead.
//
// charInString (CHARACTER c, STRING s)
//
// Returns true if single character c (actually a string)
// is contained within string s.

function charInString (c, s)
{   for (i = 0; i < s.length; i++)
    {   if (s.charAt(i) == c) return true;
    }
    return false
}



// Removes initial (leading) whitespace characters from s.
// Global variable whitespace (see above)
// defines which characters are considered whitespace.

function stripInitialWhitespace (s)

{   var i = 0;

    while ((i < s.length) && charInString (s.charAt(i), whitespace))
       i++;
    
    return s.substring (i, s.length);
}


// 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)

{   var i;

    if (isEmpty(s)) 
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);

    // 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)) 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)) 
       if (isSignedInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedInteger.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedInteger.arguments.length > 1)
            secondArg = isSignedInteger.arguments[1];

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




// 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)
{   var secondArg = defaultEmptyOK;

    if (isPositiveInteger.arguments.length > 1)
        secondArg = isPositiveInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a positive, not negative, number

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s, 10) > 0) ) );
}






// isNonnegativeInteger (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 isNonnegativeInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNonnegativeInteger.arguments.length > 1)
        secondArg = isNonnegativeInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a number >= 0

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s, 10) >= 0) ) );
}






// isNegativeInteger (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 isNegativeInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNegativeInteger.arguments.length > 1)
        secondArg = isNegativeInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a negative, not positive, number

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s, 10) < 0) ) );
}






// isNonpositiveInteger (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 isNonpositiveInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNonpositiveInteger.arguments.length > 1)
        secondArg = isNonpositiveInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a number <= 0

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s, 10) <= 0) ) );
}





// 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)) 
       if (isFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isFloat.arguments[1] == true);

    if (s == decimalPointDelimiter) 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 == decimalPointDelimiter) && !seenDecimalPoint) seenDecimalPoint = true;
        else if (!isDigit(c)) 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)) 
       if (isSignedFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedFloat.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedFloat.arguments.length > 1)
            secondArg = isSignedFloat.arguments[1];

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




// isAlphabetic (STRING s [, BOOLEAN emptyOK])
// 
// Returns true if string s is English letters 
// (A .. Z, a..z) only.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
//
// 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 isAlphabetic (s)

{   var i;

    if (isEmpty(s)) 
       if (isAlphabetic.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphabetic.arguments[1] == true);

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

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

        if (!isLetter(c))
        return false;
    }

    // All characters are letters.
    return true;
}




// isAlphanumeric (STRING s [, BOOLEAN emptyOK])
// 
// Returns true if string s is English letters 
// (A .. Z, a..z) and numbers only.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
//
// 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 isAlphanumeric (s)

{   var i;

    if (isEmpty(s)) 
       if (isAlphanumeric.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphanumeric.arguments[1] == true);

    // Search through string's characters one by one
    // until we find a non-alphanumeric 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 or letter.
        var c = s.charAt(i);

        if (! (isLetter(c) || isDigit(c) ) )
        return false;
    }

    // All characters are numbers or letters.
    return true;
}




// reformat (TARGETSTRING, STRING, INTEGER, STRING, INTEGER ... )       
//
// Handy function for arbitrarily inserting formatting characters
// or delimiters of various kinds within TARGETSTRING.
//
// reformat takes one named argument, a string s, and any number
// of other arguments.  The other arguments must be integers or
// strings.  These other arguments specify how string s is to be
// reformatted and how and where other strings are to be inserted
// into it.
//
// reformat processes the other arguments in order one by one.
// * If the argument is an integer, reformat appends that number 
//   of sequential characters from s to the resultString.
// * If the argument is a string, reformat appends the string
//   to the resultString.
//
// NOTE: The first argument after TARGETSTRING must be a string.
// (It can be empty.)  The second argument must be an integer.
// Thereafter, integers and strings must alternate.  This is to
// provide backward compatibility to Navigator 2.0.2 JavaScript
// by avoiding use of the typeof operator.
//
// It is the caller's responsibility to make sure that we do not
// try to copy more characters from s than s.length.
//
//
// HINT:
//
// If you have a string which is already delimited in one way
// (example: a phone number delimited with spaces as "123 456 7890")
// and you want to delimit it in another way using function reformat,
// call function stripCharsNotInBag to remove the unwanted 
// characters, THEN call function reformat to delimit as desired.
//
// EXAMPLE:
//
// reformat (stripCharsNotInBag ("123 456 7890", digits),
//           "(", 3, ") ", 3, "-", 4)

function reformat (s)

{   var arg;
    var sPos = 0;
    var resultString = "";

    for (var i = 1; i < reformat.arguments.length; i++) {
       arg = reformat.arguments[i];
       if (i % 2 == 1) resultString += arg;
       else {
           resultString += s.substring(sPos, sPos + arg);
           sPos += arg;
       }
    }
    return resultString;
}


// isEmail (STRING s [, BOOLEAN emptyOK])
// 
// Email address must be of form a@b.c -- in other words:
// * there must be at least one character before the @
// * there must be at least one character before and after the .
// * the characters @ and . are both required
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isEmail (s)
{   if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return defaultEmptyOK;
       else return (isEmail.arguments[1] == true);
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else 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)) 
       if (isYear.arguments.length == 1) return defaultEmptyOK;
       else return (isYear.arguments[1] == true);
    if (!isNonnegativeInteger(s)) return false;
    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)) 
       if (isIntegerInRange.arguments.length == 1) return defaultEmptyOK;
       else return (isIntegerInRange.arguments[1] == true);

    // 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,10);
    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)) 
       if (isMonth.arguments.length == 1) return defaultEmptyOK;
       else return (isMonth.arguments[1] == true);
    return isIntegerInRange (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)) 
       if (isDay.arguments.length == 1) return defaultEmptyOK;
       else return (isDay.arguments[1] == true);   
    return isIntegerInRange (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 (! (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, 10);
    var intMonth = parseInt(month, 10);
    var intDay = parseInt(day, 10);

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

    if ((intMonth == 2) && (intDay > daysInFebruary(intYear))) 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)
{   
    alert(mPrefix + s + mSuffix)
    theField.focus()
    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;
}


// checkEmail (TEXTFIELD theField [, BOOLEAN emptyOK==false])
//
// Check that string theField.value is a valid Email.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

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




//******************************************************************
function fcep(S){
//******************************************************************
//
// Deixa so' os digitos no numero
//
var Digitos = "0123456789-";
var temp = "";
var digito = "";
    for (var i=0; i<S.length; i++){
      digito = S.charAt(i);
      if (Digitos.indexOf(digito)>=0){temp=temp+digito}
    }
    return temp
}


//******************************************************************
function resto(S){
//******************************************************************
//
// Retorna o digito verificador (entrar com S "limpo")
//
var invertido = Inverte(Limpa(S));
var soma = 0;
    for (var i=0; i<invertido.length; i++){
        soma=soma+(i+2)*eval(invertido.charAt(i))
    }
    soma*=10;
    //document.form.CPF.value="";
    return ((soma % 11) % 10)
}

//******************************************************************
function confere(){
//******************************************************************
//
// Confere se o CPF dado esta' OK
//
var result = "";
var ok = false;
var temp = Limpa(document.form.cpf.value);
    if (temp.length>10){
       var work=temp.substring(0,(temp.length)-2)
       var resto = Resto(work);
       OK = (resto==eval(temp.charAt((temp.length)-2)));
       if (OK){
          work=work+resto;
          resto= Resto(work);
          OK = (resto==eval(temp.charAt((temp.length)-1)));
       }
    }
    if (OK){result="CPF válido"}else{result="CPF inválido"  && window.alert ("CPF inválido"); document.form.CPF.value="";}   
      
    //document.form.CPF.value =result;
    //window.alert (result);
}


//******************************************************************
function FU_CGC(Arg_Cgc)
//******************************************************************
{
    var VL_Digit1 ;
    var VL_Digit2 ;
	var X=0;
    if (Arg_Cgc.length == 14)
    {

       VL_Digit1 = " ";
       VL_Digit2 = " ";
       VL_Digit1 = FU_Modulo11(Arg_Cgc.substring ( 12 , 0 ), 9, 0);
       VL_Digit2 = FU_Modulo11(Arg_Cgc.substring ( 13 , 0 ), 9, 0);
       if ( VL_Digit1 == Arg_Cgc.substring ( 13 , 12 ) ) 
         if ( VL_Digit2 == Arg_Cgc.substring ( 14 , 13 ) )
          {
              // alert ("OK" , "CNPJ" ) ; // ( true ) ;
              return;
          }
     }
     alert ( "O número do CNPJ informado é inválido !"  , "CNPJ" ) ;
	 
     return (X) ; // ( false );
}

//******************************************************************
function FU_CGC2(Arg_Cgc)
//******************************************************************
{
    var VL_Digit1 ;
    var VL_Digit2 ;
	var X=0;
    if (Arg_Cgc.length == 14)
    {

       VL_Digit1 = " ";
       VL_Digit2 = " ";
       VL_Digit1 = FU_Modulo11(Arg_Cgc.substring ( 12 , 0 ), 9, 0);
       VL_Digit2 = FU_Modulo11(Arg_Cgc.substring ( 13 , 0 ), 9, 0);
       if ( VL_Digit1 == Arg_Cgc.substring ( 13 , 12 ) ) 
         if ( VL_Digit2 == Arg_Cgc.substring ( 14 , 13 ) )
          {
              // alert ("OK" , "CNPJ" ) ; // ( true ) ;
              return;
          }
     }
     return (X) ; // ( false );
}

function isDate(sDate)
{
	var bRet
	var i
	bRet = true

	if (sDate.length != 10)
	    bRet = false
	
	if (bRet)
	{
		i = 0
		while (i < sDate.length && bRet)
		{
			if (i == 2 || i == 5)
			{
				if (sDate.charAt(i) != "/")
					bRet = false
			}
			else
			{
				if (!isNumeric(sDate.charAt(i), 0))
					bRet = false
			}
			i++
		}
	}
	
	if (bRet)
	{
		iDia = parseInt(sDate.substring(0, 2), 10)
		iMes = parseInt(sDate.substring(3, 5), 10)
		iAno = parseInt(sDate.substring(6, 10), 10) 
		
		if (iMes < 1 || iMes > 12)
			bRet = false
		if (iAno < 1)
			bRet = false
	}
	if (bRet)
	{
		if (iMes == 1 || iMes == 3 || iMes == 5 || iMes == 7 || iMes == 8 || iMes == 10 || iMes == 12)
		{
			if (iDia < 1 || iDia > 31)
				bRet = false
		}
		if (iMes == 2)
		{
			if (isBissexto(iAno))
			{
				if (iDia < 1 || iDia > 29)
					bRet = false
			}
			else
			{
				if (iDia < 1 || iDia > 28)
					bRet = false
			}
		}
		if (iMes == 4 || iMes == 6 || iMes == 9 || iMes == 11)
		{
			if (iDia < 1 || iDia > 30)
				bRet = false
		}
	}

	return bRet
}

function dateRange(sData1, sData2)
{
	if ( (!isDate(sData1)) || (!isDate(sData2)) )
		return (-1);
	else if (sData1 == sData2)
		return (0);
	else
	{
		var lData1 = parseFloat(sData1.substring(6, 10) + sData1.substring(3, 5) + sData1.substring(0, 2))
		var lData2 = parseFloat(sData2.substring(6, 10) + sData2.substring(3, 5) + sData2.substring(0, 2))
		if (lData1>lData2)
			return(1);
		else
			return(2);
	}
}

function isBissexto(iAno)
{
	var bRet
	bRet = false
	if (iAno % 4 == 0 && (iAno % 100 !=0 || iAno % 400 ==0 ))
		bRet = true
	return bRet
}

function isNumeric(Valor)
{
   var i
   
   for (i = 0; i < Valor.length; i++)
   {
	  if (Valor.charAt(i) < "0" || Valor.charAt(i) > "9")
		return false;
   }
   
	return true;
}

function isLessNow(args){
	oDay = new String(parseInt(args.substring(0, 2), 10));
	oMon = new String(parseInt(args.substring(3, 5), 10));
	oYar = new String(parseInt(args.substring(6, 10), 10));
	
	oDay	= (oDay.length == 1)? ('0' + oDay) : oDay;
	oMon	= (oMon.length == 1)? ('0' + oMon) : oMon;				

	var _date = new Date();
	var _day	= new String((_date.getDate()));
	var _month	= new String((_date.getMonth() + 1));

	_day	= (_day.length == 1)?   ('0' + _day)   : _day;
	_month	= (_month.length == 1)? ('0' + _month) : _month;

	var _dateArg = oYar + oMon + oDay;
	var _dateNow = _date.getFullYear().toString() +  _month + _day;
	
	if(_dateArg < _dateNow)
		return true;
	else
		return false;
}

function fullDate(){
	if(!isNonnegativeInteger(String.fromCharCode(event.keyCode)) &&
		event.keyCode != 32 &&
		event.keyCode != 47 &&
		event.keyCode != 58){
		event.returnValue = false;
	}		
}

function IpAddressOnly()
{
	if(!isNonnegativeInteger(String.fromCharCode(event.keyCode)) && event.keyCode != 46)
		event.returnValue = false;
}

function ValidateIp(args)
{
	var _range = args.split('.');
	
	if(_range.length != 4){
		return false
	}
	
	for(var i = 0; i < 4; i++){
		if(_range[i] < 0 || _range[i] >= 255){
			return false;
		}
	}
	
	return true;
}

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//	Função:		WDinamicModal()
//	Autor:		Adriano Ferreira Souza Pinto
//	Data:		21/07/2003
//	
//	Resumo Descritivo:
//		Função para abrir uma janela modal permitindo definir se 
//		o listbox será múltipla escolha ou não.
//
//	Parâmetros de Entrada:
//		ID		: objeto	- A página que será aberta na janela de modal.
//		multiple: objeto	- Se o list será de multipla escolha ou não
//		
//	Parâmetros de Saída:
//		objeto array com as opções selecionadas no listbox da janela modal.
//
//	Alterado Por:		
//	Data da Alteração:
//	Resumo das Alterações:
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
function WDinamicModal(loader){
	//var arrArgs		= new Array();
	//arrArgs[0]		= '../css/pv_ambev_bohemia.css';
	//arrArgs[1]		= multiple;
	//arrArgs[2]		= document.location.pathname.substr(document.location.pathname.lastIndexOf('/') + 1);
	window.status	= "Aguarde..."
	var vRetorno	= window.showModalDialog(loader, null, "Dialogwidth:18;Dialogheight:10;Center:1;help:0;Status:0");
	window.status	= "";
	return vRetorno;
}

function dateDiff(dateIni, dateEnd){
	//
	//
	//
	oDay_Ini = new String(parseInt(dateIni.substring(0, 2), 10));
	oMon_Ini = new String(parseInt(dateIni.substring(3, 5), 10));
	oYar_Ini = new String(parseInt(dateIni.substring(6, 10), 10));
	//
	oDay_Ini = (oDay_Ini.length == 1)? ('0' + oDay_Ini) : oDay_Ini;
	oMon_Ini = (oMon_Ini.length == 1)? ('0' + oMon_Ini) : oMon_Ini;
	//
	//
	//
	oDay_End = new String(parseInt(dateEnd.substring(0, 2), 10));
	oMon_End = new String(parseInt(dateEnd.substring(3, 5), 10));
	oYar_End = new String(parseInt(dateEnd.substring(6, 10), 10));
	//
	oDay_End	= (oDay_End.length == 1)? ('0' + oDay_End) : oDay_End;
	oMon_End	= (oMon_End.length == 1)? ('0' + oMon_End) : oMon_End;


	var _dateIni = new Date(oYar_Ini, oMon_Ini, oDay_Ini);
	var _dateEnd = new Date(oYar_End, oMon_End, oDay_End);

	return ((_dateEnd - _dateIni)/one_day) + 1;
}

function Trim(stringText){
	var removeSpace = '';
	var ini			= 0;
	var end			= 0;
	
	if(isEmpty(stringText))
		return removeSpace;

	for(var i = 0; i < stringText.length; i++){
		if(!isWhitespace(stringText.charAt(i))){
			ini = i
			break;
		}
	} 
	
	for(var i = stringText.length + 1; i >= 0 ; i--){
		if(!isWhitespace(stringText.charAt(i))){
			end = stringText.length - i
			break;
		}
	}
	
	removeSpace = stringText.substring(ini);
	removeSpace	= removeSpace.substring(0, (removeSpace.length + 1) - end);
	
	return removeSpace;
}

function popup(strJanela, strTarget, numAltura, numLargura, ynScroll)
{

	xposition=0; yposition=0; 
    if ((parseInt(navigator.appVersion,10) >= 4 ))
    { 
        xposition = (screen.width - numLargura) / 2; 
        yposition = (screen.height - numAltura) / 2; 
    } 
    args = "width=" + numLargura + "," 
    + "height=" + numAltura + "," 
    + "location=0," 
    + "menubar=0," 
    + "resizable=1," 
    + "scrollbars="+ynScroll+"," 
    + "status=0," 
    + "titlebar=0," 
    + "toolbar=0," 
    + "hotkeys=0," 
    + "directories=0,"
    + "copyhistory=0,"
    + "screenx=" + xposition + ","  //NN Only 
    + "screeny=" + yposition + ","  //NN Only 
    + "left=" + xposition + ","     //IE Only 
    + "top=" + yposition;           //IE Only 
    strJanela = window.open( strJanela , strTarget , args ); 
}

//-->