// 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 = "."


// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";



// characters which are allowed in US phone numbers
var validUSPhoneChars = digits + phoneNumberDelimiters;


// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = digits + phoneNumberDelimiters + "+";


// non-digit characters which are allowed in 
// Social Security Numbers
var SSNDelimiters = "- ";



// characters which are allowed in Social Security Numbers
var validSSNChars = digits + SSNDelimiters;



// U.S. Social Security Numbers have 9 digits.
// They are formatted as 123-45-6789.
var digitsInSocialSecurityNumber = 9;



// U.S. phone numbers have 10 digits.
// They are formatted as 123 456 7890 or (123) 456-7890.
var digitsInUSPhoneNumber = 10;



// non-digit characters which are allowed in ZIP Codes
var ZIPCodeDelimiters = "-";



// our preferred delimiter for reformatting ZIP Codes
var ZIPCodeDelimeter = "-"


// characters which are allowed in Social Security Numbers
var validZIPCodeChars = digits + ZIPCodeDelimiters



// U.S. ZIP codes have 5 or 9 digits.
// They are formatted as 12345 or 12345-6789.
var digitsInZIPCode1 = 5
var digitsInZIPCode2 = 9


// non-digit characters which are allowed in credit card numbers
var creditCardDelimiters = " "


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

// m is an abbreviation for "missing"

var mPrefix = "You did not enter a value into the "
var mSuffix = " field. This is a required field. Please enter it now."

// s is an abbreviation for "string"

var sUSLastName = "Last Name"
var sUSFirstName = "First Name"
var sWorldLastName = "Family Name"
var sWorldFirstName = "Given Name"
var sProfession = "Profession"
var sTitle = "Title"
var sCompanyName = "Company Name"
var sUSAddress = "Street Address"
var sWorldAddress = "Address"

var sCountry = "Country"
var sQtyInsured = "How many drivers"
var sCity = "City"
var sQtyVehicals = "How many vehicals"
var sStateCode = "State Code"
var sWorldState = "State, Province, or Prefecture"
var sCountry = "Country"
var sZIPCode = "ZIP Code"
var sWorldPostalCode = "Postal Code"
var sPhone = "Home Phone Number"
var sWPhone = "Work Phone Number"
var sFax = "Fax Number"
var sDateOfBirth = "Date of Birth"
var sExpirationDate = "Expiration Date"
var sEmail = "Email"
//var sUsername = "User Name"
var sSSN = "Social Security Number"
var sCreditCardNumber = "Credit Card Number"
var sOtherInfo = "Other Information"




// i is an abbreviation for "invalid"

var iStateCode = "This field must be a valid two character U.S. state abbreviation (like FL for Florida). Please enter it now."
var iZIPCode = "This field must be a 5 or 9 digit U.S. ZIP Code (like 33511). Please reenter it now."
var iUSPhone = "This field must be a 10 digit U.S. phone number (like 813 555 1212). Please enter it now."
var iWUSPhone = "This field must be a 10 digit U.S. phone number (like 813 555 1212). Please enter it now."
var iWorldPhone = "This field must be a valid international phone number. Please reenter it now."
var iSSN = "Your SSN must be a 9 digit U.S. social security number (like 123 45 6789). Please reenter it now."
var iSSN2 = "SSN for 2nd Person must be a 9 digit U.S. social security number (like 123 45 6789). Please enter it now."
var iSSN3 = "SSN for 3rd person must be a 9 digit U.S. social security number (like 123 45 6789). Please enter it now."
var iSSN4 = "SSN for 4th person must be a 9 digit U.S. social security number (like 123 45 6789). Please enter it now."
var iEmail = "This field must be a valid email address likw (some@email.com). Please enter it now."
var iCreditCardPrefix = "This is not a valid "
var iCreditCardSuffix = " credit card number. (Click the link on this form to see a list of sample numbers.) Please enter it now."
var iDay = "This field must be a day number between 1 and 31.  Please reenter it now."
var iGender = "No selection was made for Your Gender!."
var iAge = "Your Age must be a number between 1 and 120.  Please enter it now."
var iAge2 = "2nd Person Insured Age must be a number between 1 and 120.  Please enter it now."
var iAge3 = "3rd Person Insured Age must be a number between 1 and 120.  Please enter it now."
var iAge4 = "4th Person Insured Age must be a number between 1 and 120.  Please enter it now."
var iDrivers = "The Number of Drivers must be a number between 1 and 4.  Please enter it now."
var iVehicals = "The Number of vehicals must be a number between 1 and 4.  Please enter it now."
var iMonth = "This field must be a month number between 1 and 12.  Please reenter it now."
var iYear = "This field must be a 2 or 4 digit year number.  Please reenter it now."
var iYeara1 = "Year for 1st auto must be a 4 digit year number.  Please enter it now."
var iYeara2 = "Year for 2nd auto must be a 4 digit year number.  Please enter it now."
var iYeara3 = "Year for 3rd auto must be a 4 digit year number.  Please enter it now."
var iYeara4 = "Year for 4th auto must be a 4 digit year number.  Please enter it now."
var iYearm1 = "Year for 1st cycle must be a 4 digit year number.  Please enter it now."
var iYearm2 = "Year for 2nd cycle must be a 4 digit year number.  Please enter it now."
var iYearm3 = "Year for 3rd cycle must be a 4 digit year number.  Please enter it now."
var iYearm4 = "Year for 4th cycle must be a 4 digit year number.  Please enter it now."
var iBYear = "Year for boat must be a 4 digit year number.  Please enter it now."
var iBMYear = "Year for boat motor must be a 4 digit year number.  Please enter it now."
var iPYear = "Year for home purchase must be a 4 digit year number.  Please enter it now."
var iHYear = "Year for home construction must be a 4 digit number.  Please enter it now."
var iRYear = "Age of roof must be between 1 or 25 years numeric.  Please enter it now."
var iVin1 = "VIN for 1st auto must be a 17 digit Alphanumeric.  Please enter it now."
var iVin2 = "VIN for 2nd auto must be a 17 digit Alphanumeric.  Please enter it now."
var iVin3 = "VIN for 3rd auto must be a 17 digit Alphanumeric.  Please enter it now."
var iVin4 = "VIN for 4th auto must be a 17 digit Alphanumeric.  Please enter it now."
var imVin1 = "VIN for 1st cycle must be a 17 digit Alphanumeric.  Please enter it now."
var imVin2 = "VIN for 2nd cycle must be a 17 digit Alphanumeric.  Please enter it now."
var imVin3 = "VIN for 3rd cycle must be a 17 digit Alphanumeric.  Please enter it now."
var imVin4 = "VIN for 4th cycle must be a 17 digit Alphanumeric.  Please enter it now."
var iMileage1 = "Mileage one-way each day for 1st auto must be a number between 0 and 300. Please enter it now."
var iMileage2 = "Mileage one-way each day for 2nd auto must be a number between 0 and 300. Please enter it now."
var iMileage3 = "Mileage one-way each day for 3rd auto must be a number between 0 and 300. Please enter it now."
var iMileage4 = "Mileage one-way each day for 4th auto must be a number between 0 and 300. Please enter it now."
var iDatePrefix = "The Day, Month, and Year for "
var iDateSuffix = " do not form a valid date.  Please reenter them now."
var iBLength = "Boat Length must be numeric only, field cannot be empty.  Please enter it now."
var iBOwed = "Amount owed for Boat must be numeric only.  Please re-enter it now."
var iMHP = "Boat motor HP/CC must be numeric only, field cannot be empty.  Please enter it now."
var iA1Owed = "Amount owed for auto 1 must be numeric only.  Please enter it now."
var iA2Owed = "Amount owed for auto 2 must be numeric only.  Please enter it now."
var iA3Owed = "Amount owed for auto 3 must be numeric only.  Please enter it now."
var iA4Owed = "Amount owed for auto 4 must be numeric only.  Please enter it now."
var iM1Owed = "Amount owed for cycle 1 must be numeric only.  Please enter it now."
var iM2Owed = "Amount owed for cycle 2 must be numeric only.  Please enter it now."
var iM3Owed = "Amount owed for cycle 3 must be numeric only.  Please enter it now."
var iM4Owed = "Amount owed for cycle 4 must be numeric only.  Please enter it now."
var iccs1 = "Cycle 1 CCs must be numeric only.  Please enter it now."
var iccs2 = "Cycle 2 CCs must be numeric only.  Please enter it now."
var iccs3 = "Cycle 3 CCs must be numeric only.  Please enter it now."
var iccs4 = "Cycle 4 CCs must be numeric only.  Please enter it now."
var iMSpeed = "Boat max speed must be numeric only, field cannot be empty.  Please enter it now."
var iBValue = "The boat value must be numeric only.  If none put 0.  Please enter it now."
var iMValue = "The motor value must be numeric only, field cannot be empty.  Please enter it now."
var iTValue = "The trailer value must be numeric only.  If none put 0.  Please enter it now."
var iOEValue = "Amount for misc. equipment must be numeric a only.  If none put 0.  Please enter it now."
var iBEmploy = "The # of employees value must be numeric only.  If none put 0.  Please enter it now."
var iBArea = "The buildings total sq. footage value must be numeric only, field cannot be empty.  Please enter it now."
var iOArea = "The Occupied space sq. footage value must be numeric only, field cannot be empty.  Please enter it now."
var iBC = "The building coverage amount must be numeric only, field cannot be empty.  Please enter it now."
var iPP = "The Personal Protection Coverage amount must be numeric only, field cannot be empty.  Please enter it now."
var iGIncome = "Amount for gross income must be a numeric only.  Please enter it now."
var iDIncome = "Amount for desired income must be a numeric only.  Please enter it now."
var iSize = "The homes total sq. Footage amount must be numeric only, field cannot be empty."
var iMtgamt = "The homes mortgage amount must be numeric only, field cannot be empty."
var iQtysalarm = "The quantity of smoke alarms in this house must be between 1 and 20, field cannot be empty."
var iFStation = "The homes Proximity to a Firestation in miles must be numeric only, field cannot be empty."
var iFHydrant = "The homes Proximity to a Firehydrant in yards must be numeric only, field cannot be empty."
var iDwelling = "The homes dwelling coverage amount must be numeric only, field cannot be empty."
var iSizeL = "The Mobile homes length in feet must be numeric only, field cannot be empty."
var iSizeW = "The Mobile homes width in feet amount must be numeric only, field cannot be empty."
var iCont = "The homes contnent coverage amount must be numeric only, Enter 0 If no coverage is desired."
var iRVYear = "The RV year must be a 4 digit numeric only, field cannot be empty."
var iRVVin = "The RV VIN must be a 17 alphanumeric only, field cannot be empty."
var iRVLen = "The RV length in feet must be numeric only, field cannot be empty."
var iRVOwed = "The RV financing owed must be numeric only, field cannot be empty."
var iRVuc = "The RV Unit Coverage must be numeric only, field cannot be empty. This is typically the value of the RV."
var iANumeric = "This input field must be numeric only and cannot be empty. \n Only numbers allowed. No hyphens, commas, or decimals allowed!"


// p is an abbreviation for "prompt"

var pEntryPrompt = "Please enter a "
var pUsername = "Please enter a 5 or more character User Name."
var pStateCode = "2 character code (like FL)."
var pZIPCode = "5 or 9 digit U.S. ZIP Code (like 33511)."
var pUSPhone = "10 digit U.S. phone number (like 813 555 1212)."
var pWUSPhone = "10 digit U.S. phone number (like 813 555 1212)."
var pWorldPhone = "international phone number."
var pSSN = "A 9 digit U.S. social security number (like 123 45 6789) is required."
var pEmail = "valid email address (like JohnDoe@widgets.com)."
var pURL = "valid web address (like www.widgets.com)."
var pCreditCard = "valid credit card number."
var pDay = "day number between 1 and 31."
var pMonth = "month number between 1 and 12."
var pYear = "4 digit year number."
var pYeara = "4 digit year number."
var pAge = "Enter only numeric values for this field."
var pAge2 = "Enter only numeric values for this field."
var pGender = "Please make a Gender selection."
var pDrivers = "Indicate how many Drivers between 1 and 4."
var pVehicals = "Indicate how many Vehicals between 1 and 4."
var pVin = "17 Alphanumeric Characters for this field."
var pNum = "Required numeric for this field."
var pNumb = "Non-required numeric for this field."
var pMileage = "Indicate how many miles driven one way to school or work between 0 and 300."



// 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;




// Valid U.S. Postal Codes for states, territories, armed forces, etc.
// See http://www.usps.gov/ncsc/lookups/abbr_state.txt.

var USStateCodeDelimiter = "|";
var USStateCodes = "AL|AK|AS|AZ|AR|CA|CO|CT|DE|DC|FM|FL|GA|GU|HI|ID|IL|IN|IA|KS|KY|LA|ME|MH|MD|MA|MI|MN|MS|MO|MT|NE|NV|NH|NJ|NM|NY|NC|ND|MP|OH|OK|OR|PW|PA|PR|RI|SC|SD|TN|TX|UT|VT|VI|VA|WA|WV|WI|WY|AE|AA|AE|AE|AP"
var StateCodesChar = 2



// 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;
}



// 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) > 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) >= 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) < 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) <= 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.
//
// EXAMPLES:
//
// * To reformat a 10-digit U.S. phone number from "1234567890"
//   to "(123) 456-7890" make this function call:
//   reformat("1234567890", "(", 3, ") ", 3, "-", 4)
//
// * To reformat a 9-digit U.S. Social Security number from
//   "123456789" to "123-45-6789" make this function call:
//   reformat("123456789", "", 3, "-", 2, "-", 4)
//
// 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;
}




// isSSN (STRING s [, BOOLEAN emptyOK])
// 
// isSSN returns true if string s is a valid U.S. Social
// Security Number.  Must be 9 digits.
//
// NOTE: Strip out any delimiters (spaces, hyphens, etc.)
// from string s before calling this function.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isSSN (s)
{   if (isEmpty(s)) 
       if (isSSN.arguments.length == 1) return defaultEmptyOK;
       else return (isSSN.arguments[1] == true);
    return (isInteger(s) && s.length == digitsInSocialSecurityNumber)
}

// isUSPhoneNumber (STRING s [, BOOLEAN emptyOK])
// 
// isUSPhoneNumber returns true if string s is a valid U.S. Phone
// Number.  Must be 10 digits.
//
// NOTE: Strip out any delimiters (spaces, hyphens, parentheses, etc.)
// from string s before calling this function.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isUSPhoneNumber (s)
{   if (isEmpty(s)) 
       if (isUSPhoneNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isUSPhoneNumber.arguments[1] == true);
    return (isInteger(s) && s.length == digitsInUSPhoneNumber)
}



// isInternationalPhoneNumber (STRING s [, BOOLEAN emptyOK])
// 
// isInternationalPhoneNumber returns true if string s is a valid 
// international phone number.  Must be digits only; any length OK.
// May be prefixed by + character.
//
// NOTE: A phone number of all zeros would not be accepted.
// I don't think that is a valid phone number anyway.
//
// NOTE: Strip out any delimiters (spaces, hyphens, parentheses, etc.)
// from string s before calling this function.  You may leave in 
// leading + character if you wish.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isInternationalPhoneNumber (s)
{   if (isEmpty(s)) 
       if (isInternationalPhoneNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isInternationalPhoneNumber.arguments[1] == true);
    return (isPositiveInteger(s))
}




// isZIPCode (STRING s [, BOOLEAN emptyOK])
// 
// isZIPCode returns true if string s is a valid 
// U.S. ZIP code.  Must be 5 or 9 digits only.
//
// NOTE: Strip out any delimiters (spaces, hyphens, etc.)
// from string s before calling this function.  
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isZIPCode (s)
{  if (isEmpty(s)) 
       if (isZIPCode.arguments.length == 1) return defaultEmptyOK;
       else return (isZIPCode.arguments[1] == true);
   return (isInteger(s) && 
            ((s.length == digitsInZIPCode1) ||
             (s.length == digitsInZIPCode2)))
}





// isStateCode (STRING s [, BOOLEAN emptyOK])
// 
// Return true if s is a valid U.S. Postal Code 
// (abbreviation for state).
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isStateCode(s)
{   if (isEmpty(s)) 
       if (isStateCode.arguments.length == 1) return defaultEmptyOK;
       else return (isStateCode.arguments[1] == true);
    return ( (s.length == StateCodesChar) &&
             (s.indexOf(USStateCodeDelimiter) == -1) && (USStateCodes.indexOf(s) != -1))
    //return ( (USStateCodes.indexOf(s) != -2) &&
             //(s.indexOf(USStateCodeDelimiter) == -1))
}




// 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;
}

// isVin checks ti see if a vehicle vin number is a 17 char alpanumeric

function isVin (s)
{   if (isEmpty(s)) 
       if (isVin.arguments.length == 1) return defaultEmptyOK;
       else return (isVin.arguments[1] == true);
    return (isAlphanumeric(s) && s.length == 17)
}
function isNumber (s)
{   if (isEmpty(s)) 
       if (isNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isNumber.arguments[1] == true);
    return (isInteger(s))
}
function isNumberb (s)
{if (isEmpty(s)) 
       if (isNumberb.arguments.length == 1) return defaultEmptyOK;
       else return (isNumberb.arguments[1] == true);
    return (isInteger(s))
}
function isUsername (s)
{   if (isEmpty(s)) 
       if (isUsername.arguments.length == 1) return defaultEmptyOK;
       else return (isUsername.arguments[1] == true);
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 5 character, so we
    // start looking at character position 1 
    // (i.e. second character)
   // var i = 1;
    var sLength = s.length;

    // look for @
   //while (i = sLength)
  // { i++
 //}   

    if (sLength <= 4) 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));
}

function isYeara (s)
{   if (isEmpty(s)) 
       if (isYeara.arguments.length == 1) return defaultEmptyOK;
       else return (isYeara.arguments[1] == true);
    if (!isNonnegativeInteger(s)) return false;
    return (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);
    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);
}

function isAge (s)
{   if (isEmpty(s)) 
       if (isAge.arguments.length == 1) return defaultEmptyOK;
       else return (isAge.arguments[1] == true);   
    return isIntegerInRange (s, 1, 120);
}

function isAge2 (s)
{   if (isEmpty(s)) 
       if (isAge2.arguments.length == 1) return defaultEmptyOK;
       else return (isAge2.arguments[1] == true);   
    return isIntegerInRange (s, 1, 120);
}
function isAge3 (s)
{   if (isEmpty(s)) 
       if (isAge3.arguments.length == 1) return defaultEmptyOK;
       else return (isAge3.arguments[1] == true);   
    return isIntegerInRange (s, 1, 120);
}
function isAge4 (s)
{   if (isEmpty(s)) 
       if (isAge4.arguments.length == 1) return defaultEmptyOK;
       else return (isAge4.arguments[1] == true);   
    return isIntegerInRange (s, 1, 120);
}
function isMileage (s)
{   if (isEmpty(s)) 
       if (isMileage.arguments.length == 1) return defaultEmptyOK;
       else return (isMileage.arguments[1] == true);   
    return isIntegerInRange (s, 0, 300);
}
function isDrivers (s)
{   if (isEmpty(s)) 
       if (isDrivers.arguments.length == 1) return defaultEmptyOK;
       else return (isDrivers.arguments[1] == true);   
    return isIntegerInRange (s, 1, 4);
}
function isVehicals (s)
{   if (isEmpty(s)) 
       if (isVehicals.arguments.length == 1) return defaultEmptyOK;
       else return (isVehicals.arguments[1] == true);   
    return isIntegerInRange (s, 1, 4);
}
function isSalarm (s)
{   if (isEmpty(s)) 
       if (isSalarm.arguments.length == 1) return defaultEmptyOK;
       else return (isSalarm.arguments[1] == true);   
    return isIntegerInRange (s, 1, 20);
}
function isRoof (s)
{   if (isEmpty(s)) 
       if (isRoof.arguments.length == 1) return defaultEmptyOK;
       else return (isRoof.arguments[1] == true);   
    return isIntegerInRange (s, 1, 25);
}
// 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);
    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;
}




/* 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
}

function warnAlert (theField, s)
{   
    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;
}


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

function checkStateCode (theField, emptyOK)
{   if (checkStateCode.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  theField.value = theField.value.toUpperCase();
       if (!isStateCode(theField.value, false)) 
          return warnInvalid (theField, iStateCode);
       else return true;
    }
}

// takes ZIPString, a string of 5 or 9 digits;
// if 9 digits, inserts separator hyphen

function reformatZIPCode (ZIPString)
{   if (ZIPString.length == 5) return ZIPString;
    else return (reformat (ZIPString, "", 5, "-", 4));
}




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

function checkZIPCode (theField, emptyOK)
{   if (checkZIPCode.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    { var normalizedZIP = stripCharsInBag(theField.value, ZIPCodeDelimiters)
      if (!isZIPCode(normalizedZIP, false)) 
         return warnInvalid (theField, iZIPCode);
      else 
      {  // if you don't want to insert a hyphen, comment next line out
         theField.value = reformatZIPCode(normalizedZIP)
         return true;
      }
    }
}



// takes USPhone, a string of 10 digits
// and reformats as (123) 456-789

function reformatUSPhone (USPhone)
{   return (reformat (USPhone, "(", 3, ") ", 3, "-", 4))
}



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

function checkUSPhone (theField, emptyOK)
{   if (checkUSPhone.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedPhone = stripCharsInBag(theField.value, phoneNumberDelimiters)
       if (!isUSPhoneNumber(normalizedPhone, false)) 
          return warnInvalid (theField, iUSPhone);
       else 
       {  // if you don't want to reformat as (123) 456-789, comment next line out
          theField.value = reformatUSPhone(normalizedPhone)
          return true;
       }
    }
}

function checkWUSPhone (theField, emptyOK)
{   if (checkWUSPhone.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedPhone = stripCharsInBag(theField.value, phoneNumberDelimiters)
       if (!isUSPhoneNumber(normalizedPhone, false)) 
          return warnInvalid (theField, iWUSPhone);
       else 
       {  // if you don't want to reformat as (123) 456-789, comment next line out
          theField.value = reformatUSPhone(normalizedPhone)
          return true;
       }
    }
}

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

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

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

// takes SSN, a string of 9 digits
// and reformats as 123-45-6789

function reformatSSN (SSN)
{   return (reformat (SSN, "", 3, "-", 2, "-", 4))
}


// Check that string theField.value is a valid SSN.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
// check the purchase year of the home
function checkPYear (theField, emptyOK)
{   if (checkPYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iPYear);
    else return true;
}

// year the home was constructed, if numeric and not null.
function checkHYear (theField, emptyOK)
{   if (checkHYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iHYear);
    else return true;
}
// year the roof was constructed, if numeric and not null.
function checkRYear (theField, emptyOK)
{   if (checkRYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isRoof(theField.value, false)) 
       return warnInvalid (theField, iRYear);
    else return true;
}
// sq footage of home, if numeric and not null.
function checkSize (theField, emptyOK)
{   if (checkSize.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iSize);
       else return true;
}
// Length of mobile home, if numeric and not null.
function checkSizeL (theField, emptyOK)
{   if (checkSizeL.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iSizeL);
       else return true;
}
// Length of RV, if numeric and not null.
function checkRVLen (theField, emptyOK)
{   if (checkRVLen.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iRVLen);
       else return true;
}
// Width of Mobile of home, if numeric and not null.
function checkSizeW (theField, emptyOK)
{   if (checkSizeW.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iSizeW);
       else return true;
}
// mortgage amount of the home, if numeric and not null.
function checkMtgamt (theField, emptyOK)
{   if (checkMtgamt.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iMtgamt);
       else return true;
}
// how many fire alarms, if numeric and not null.
function checkQtysalarm (theField, emptyOK)
{   if (checkQtysalarm.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isSalarm(theField.value, false)) 
       return warnInvalid (theField, iQtysalarm);
    else return true;
}
// homes distance from a firestation, if numeric and not null.
function checkFStation (theField, emptyOK)
{   if (checkFStation.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iFStation);
       else return true;
}
// home distance from a firehydrant, if numeric and not null.
function checkFHydrant (theField, emptyOK)
{   if (checkFHydrant.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iFHydrant);
       else return true;
}
// dwelling coverage for the home, if numeric and not null.
function checkDwelling (theField, emptyOK)
{   if (checkDwelling.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iDwelling);
       else return true;
}
// Contents coverage for the home, if numeric and not null.
function checkCont (theField, emptyOK)
{   if (checkCont.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iCont);
       else return true;
}
// for ssn - ssn4 to check and reformat social security numbers
function checkSSN (theField, emptyOK)
{   if (checkSSN.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedSSN = stripCharsInBag(theField.value, SSNDelimiters)
       if (!isSSN(normalizedSSN, false)) 
          return warnInvalid (theField, iSSN);
       else 
       {  // if you don't want to reformats as 123-456-7890, comment next line out
          theField.value = reformatSSN(normalizedSSN)
          return true;
       }
    }
}

function checkSSN2 (theField, emptyOK)
{   if (checkSSN2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedSSN = stripCharsInBag(theField.value, SSNDelimiters)
       if (!isSSN(normalizedSSN, false)) 
          return warnInvalid (theField, iSSN2);
       else 
       {  // if you don't want to reformats as 123-456-7890, comment next line out
          theField.value = reformatSSN(normalizedSSN)
          return true;
       }
    }
}

function checkSSN3 (theField, emptyOK)
{   if (checkSSN3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedSSN = stripCharsInBag(theField.value, SSNDelimiters)
       if (!isSSN(normalizedSSN, false)) 
          return warnInvalid (theField, iSSN3);
       else 
       {  // if you don't want to reformats as 123-456-7890, comment next line out
          theField.value = reformatSSN(normalizedSSN)
          return true;
       }
    }
}

function checkSSN4 (theField, emptyOK)
{   if (checkSSN4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedSSN = stripCharsInBag(theField.value, SSNDelimiters)
       if (!isSSN(normalizedSSN, false)) 
          return warnInvalid (theField, iSSN4);
       else 
       {  // if you don't want to reformats as 123-456-7890, comment next line out
          theField.value = reformatSSN(normalizedSSN)
          return true;
       }
    }
}
// for M1 - M40wed to check if numeric for balanced owed on a financed motorcycle/atv and value not null.
function checkM1Owed (theField, emptyOK)
{   if (checkM1Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iM1Owed);
       else return true;
}
function checkM2Owed (theField, emptyOK)
{   if (checkM2Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iM2Owed);
       else return true;
}
function checkM3Owed (theField, emptyOK)
{   if (checkM3Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iM3Owed);
       else return true;
}
function checkM4Owed (theField, emptyOK)
{   if (checkM4Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iM4Owed);
       else return true;
}
function checkccs1 (theField, emptyOK)
{   if (checkccs1.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iccs1);
       else return true;
}
function checkccs2 (theField, emptyOK)
{   if (checkccs2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iccs2);
       else return true;
}
function checkccs3 (theField, emptyOK)
{   if (checkccs3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iccs3);
       else return true;
}
function checkccs4 (theField, emptyOK)
{   if (checkccs4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iccs4);
       else return true;
}
// for A1 - A40wed to check if numeric for balanced owed on a financed auto and value not null.
function checkA1Owed (theField, emptyOK)
{   if (checkA1Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iA1Owed);
       else return true;
}
function checkA2Owed (theField, emptyOK)
{   if (checkA2Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iA2Owed);
       else return true;
}
function checkA3Owed (theField, emptyOK)
{   if (checkA3Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iA3Owed);
       else return true;
}
function checkA4Owed (theField, emptyOK)
{   if (checkA4Owed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iA4Owed);
       else return true;
}
// check if boat length is numeric and not null
function checkBLength (theField, emptyOK)
{   if (checkBLength.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iBLength);
       else return true;
}
// check if the balnced owed on a finaced boat is numeric and not null.
function checkBOwed (theField, emptyOK)
{   if (checkBOwed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumberb(theField.value, false)) 
          return warnInvalid (theField, iBOwed);
       else return true;
}
// check if the RV financed owed is numeric and not null.
function checkRVOwed (theField, emptyOK)
{   if (checkRVOwed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumberb(theField.value, false)) 
          return warnInvalid (theField, iRVOwed);
       else return true;
}
// check if the RV unit coverage is numeric and not null.
function checkRVuc (theField, emptyOK)
{   if (checkRVuc.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iRVuc);
       else return true;
}
// check if the a boats horse power is numeric and not null.
function checkMHP (theField, emptyOK)
{   if (checkMHP.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iMHP);
       else return true;
}

// check if the a boats speed is numeric and not null.
function checkMSpeed (theField, emptyOK)
{   if (checkMSpeed.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iMSpeed);
       else return true;
}

// check if the a boats value is numeric and not null.
function checkBValue (theField, emptyOK)
{   if (checkBValue.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iBValue);
       else return true;
}

// check if the a boats motor value is numeric and not null.
function checkMValue (theField, emptyOK)
{   if (checkMValue.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iMValue);
       else return true;
}
// check if the a boats trailer value is numeric and not null.
function checkTValue (theField, emptyOK)
{   if (checkTValue.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iTValue);
       else return true;
}

// check if the a boats other equipment value is numeric and not null.
function checkOEValue (theField, emptyOK)
{   if (checkOEValue.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumberb(theField.value, false)) 
          return warnInvalid (theField, iOEValue);
       else return true;
}

// check if the qty of business employees is numeric and not null.
function checkBEmploy (theField, emptyOK)
{   if (checkBEmploy.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iBEmploy);
       else return true;
}

// check if the businesses area is numeric and not null.
function checkBArea (theField, emptyOK)
{   if (checkBArea.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iBArea);
       else return true;
}

// check if the a renters occupied area in a business is numeric and not null.
function checkOArea (theField, emptyOK)
{   if (checkOArea.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iOArea);
       else return true;
}
function checkBC (theField, emptyOK)
{   if (checkBC.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iBC);
       else return true;
}
function checkPP (theField, emptyOK)
{   if (checkPP.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iPP);
       else return true;
}

// check if the a auto 1 - 4 vin is alphnumeric and not null.
function checkVin1 (theField, emptyOK)
{   if (checkVin1.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, iVin1);
       else return true;
}
function checkVin2 (theField, emptyOK)
{   if (checkVin2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, iVin2);
       else return true;
}
function checkVin3 (theField, emptyOK)
{   if (checkVin3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, iVin3);
       else return true;
}
function checkVin4 (theField, emptyOK)
{   if (checkVin4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, iVin4);
       else return true;
}
// check if the a cycle 1 - 4 vin is alphnumeric and not null.
function checkmVin1 (theField, emptyOK)
{   if (checkmVin1.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, imVin1);
       else return true;
}
function checkmVin2 (theField, emptyOK)
{   if (checkmVin2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, imVin2);
       else return true;
}
function checkmVin3 (theField, emptyOK)
{   if (checkmVin3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, imVin3);
       else return true;
}
function checkmVin4 (theField, emptyOK)
{   if (checkmVin4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, imVin4);
       else return true;
}
function checkRVVin (theField, emptyOK)
{   if (checkRVVin.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isVin(theField.value, false)) 
          return warnInvalid (theField, iRVVin);
       else return true;
}
// check if that the gross income (disability) is numeric and not null.
function checkGIncome (theField, emptyOK)
{   if (checkGIncome.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iGIncome);
       else return true;
}
// check if that the desired income (disability) is numeric and not null.
function checkDIncome (theField, emptyOK)
{   if (checkDIncome.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iDIncome);
       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;
}
function checkRVYear (theField, emptyOK)
{   if (checkRVYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYear(theField.value, false)) 
       return warnInvalid (theField, iRVYear);
    else return true;
}
function checkYeara1 (theField, emptyOK)
{   if (checkYeara1.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYeara1);
    else return true;
}
function checkYeara2 (theField, emptyOK)
{   if (checkYeara2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYeara2);
    else return true;
}
function checkYeara3 (theField, emptyOK)
{   if (checkYeara3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYeara3);
    else return true;
}
function checkYeara4 (theField, emptyOK)
{   if (checkYeara4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYeara4);
    else return true;
}
function checkBYear (theField, emptyOK)
{   if (checkBYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iBYear);
    else return true;
}
function checkBMYear (theField, emptyOK)
{   if (checkBMYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iBYear);
    else return true;
}
function checkYearm1 (theField, emptyOK)
{   if (checkYearm1.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYearm1);
    else return true;
}
function checkYearm2 (theField, emptyOK)
{   if (checkYearm2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYearm2);
    else return true;
}
function checkYearm3 (theField, emptyOK)
{   if (checkYearm3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYearm3);
    else return true;
}
function checkYearm4 (theField, emptyOK)
{   if (checkYearm4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYeara(theField.value, false)) 
       return warnInvalid (theField, iYearm4);
    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;
}

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

function checkAge2 (theField, emptyOK)
{   if (checkAge2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isAge2(theField.value, false)) 
       return warnInvalid (theField, iAge2);
    else return true;
}

function checkAge3 (theField, emptyOK)
{   if (checkAge3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isAge3(theField.value, false)) 
       return warnInvalid (theField, iAge3);
    else return true;
}

function checkAge4 (theField, emptyOK)
{   if (checkAge4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isAge4(theField.value, false)) 
       return warnInvalid (theField, iAge4);
    else return true;
}

function checkMileage1 (theField, emptyOK)
{   if (checkMileage1.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isMileage(theField.value, false)) 
       return warnInvalid (theField, iMileage1);
    else return true;
}

function checkMileage2 (theField, emptyOK)
{   if (checkMileage2.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isMileage(theField.value, false)) 
       return warnInvalid (theField, iMileage2);
    else return true;
}

function checkMileage3 (theField, emptyOK)
{   if (checkMileage3.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isMileage(theField.value, false)) 
       return warnInvalid (theField, iMileage3);
    else return true;
}

function checkMileage4 (theField, emptyOK)
{   if (checkMileage4.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isMileage(theField.value, false)) 
       return warnInvalid (theField, iMileage4);
    else return true;
}

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

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

// Check That this field is numeric and not null.
function checkNumeric (theField, emptyOK)
{   if (checkNumeric.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isNumber(theField.value, false)) 
          return warnInvalid (theField, iANumeric);
       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);
}