Credit Card and Expiry validation

Here you go... Here are three that I found:
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<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>


<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>

-------------------------------------------------------
<script language="javascript">
/*************************************************************************\
Author: Simon Tneoh Chee-Boon
Email Add.: tneohcb@pc.jaring.my
Last Modified: 4th.Jul.1997
Copyright (c) 1997 Simon Tneoh All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for commercial or non-commercial purposes is hereby granted
provided that this copyright notice appears in all copies.
This is a demonstration of using credit card javascript object. The
credit cards used here are the international standard card. Luhncheck is
used to validate the card number.
\*************************************************************************/
var Cards = new makeArray(8);
Cards[0] = new CardType("MasterCard", "51,52,53,54,55", "16");
var MasterCard = Cards[0];
Cards[1] = new CardType("VisaCard", "4", "13,16");
var VisaCard = Cards[1];
Cards[2] = new CardType("AmExCard", "34,37", "15");
var AmExCard = Cards[2];
Cards[3] = new CardType("DinersClubCard", "30,36,38", "14");
var DinersClubCard = Cards[3];
Cards[4] = new CardType("DiscoverCard", "6011", "16");
var DiscoverCard = Cards[4];
Cards[5] = new CardType("enRouteCard", "2014,2149", "15");
var enRouteCard = Cards[5];
Cards[6] = new CardType("JCBCard", "3088,3096,3112,3158,3337,3528", "16");
var JCBCard = Cards[6];
var LuhnCheckSum = Cards[7] = new CardType();

/*************************************************************************\
CheckCardNumber(form)
function called when users click the "check" button.
\*************************************************************************/
function CheckCardNumber(form) {
var tmpyear;
if (form.CardNumber.value.length == 0) {
alert("Please key in Card Number.");
form.CardNumber.focus();
return;
}
if (form.ExpYear.value.length == 0) {
alert("Please key in Expiry Year.");
form.ExpYear.focus();
return;
}
if (form.ExpYear.value > 96)
tmpyear = "19" + form.ExpYear.value;
else if (form.ExpYear.value < 21)
tmpyear = "20" + form.ExpYear.value;
else {
alert("bad year");
return;
}
tmpmonth = form.ExpMon.options[form.ExpMon.selectedIndex].value;
// The following line doesn't work in IE3, you need to change it
// to something like "(new CardType())...".
// if (!CardType().isExpiryDate(tmpyear, tmpmonth)) {
if (!(new CardType()).isExpiryDate(tmpyear, tmpmonth)) {
alert("expiry date passed already.");
return;
}
card = form.CardType.options[form.CardType.selectedIndex].value;
var retval = eval(card + ".checkCardNumber(\"" + form.CardNumber.value +
"\", " + tmpyear + ", " + tmpmonth + ");");

cardname = "";
if (retval)
// The cardnumber has the valid luhn checksum and matches the
// cardtype's rule.
alert("correct");
else {
// The cardnumber has the valid luhn checksum, but we want to know which
// cardtype it belongs to.
for (var n = 0; n < Cards.size; n++) {
if (Cards[n].checkCardNumber(form.CardNumber.value, tmpyear, tmpmonth)) {
cardname = Cards[n].getCardType();
break;
}
}
if (cardname.length > 0) {
alert("This's " + cardname + " number, not " + card + " number.");
}
else {
alert("This's not a card number.");
}
}
}

/*************************************************************************\
Object CardType([String cardtype, String rules, String len, int year,
                              int month])
cardtype : type of card, eg: MasterCard, Visa, etc.
rules : rules of the cardnumber, eg: "4", "6011", "34,37".
len : valid length of cardnumber, eg: "16,19", "13,16".
year      : year of expiry date.
month      : month of expiry date.
eg:
var VisaCard = new CardType("Visa", "4", "16");
var AmExCard = new CardType("AmEx", "34,37", "15");
\*************************************************************************/
function CardType() {
var n;
var argv = CardType.arguments;
var argc = CardType.arguments.length;

this.objname = "object CardType";

var tmpcardtype = (argc > 0) ? argv[0] : "CardObject";
var tmprules = (argc > 1) ? argv[1] : "0,1,2,3,4,5,6,7,8,9";
var tmplen = (argc > 2) ? argv[2] : "13,14,15,16,19";

// set CardNumber method.
this.setCardNumber = setCardNumber;

// setCardType method.
this.setCardType = setCardType;

// setLen method.
this.setLen = setLen;

// setRules method.
this.setRules = setRules;

// setExpiryDate method.
this.setExpiryDate = setExpiryDate;

this.setCardType(tmpcardtype);
this.setLen(tmplen);
this.setRules(tmprules);
if (argc > 4)
this.setExpiryDate(argv[3], argv[4]);

// checkCardNumber method.
this.checkCardNumber = checkCardNumber;

// getExpiryDate method.
this.getExpiryDate = getExpiryDate;

// getCardType method.
this.getCardType = getCardType;

// isCardNumber method.
this.isCardNumber = isCardNumber;

// isExpiryDate method.
this.isExpiryDate = isExpiryDate;

// luhnCheck method.
this.luhnCheck = luhnCheck;

return this;
}

/*************************************************************************\
boolean checkCardNumber([String cardnumber, int year, int month])
return true if cardnumber pass the luhncheck and the expiry date is
valid, else return false.
\*************************************************************************/
function checkCardNumber() {
var argv = checkCardNumber.arguments;
var argc = checkCardNumber.arguments.length;
var cardnumber = (argc > 0) ? argv[0] : this.cardnumber;
var year = (argc > 1) ? argv[1] : this.year;
var month = (argc > 2) ? argv[2] : this.month;

this.setCardNumber(cardnumber);
this.setExpiryDate(year, month);

if (!this.isCardNumber())
return false;

if (!this.isExpiryDate())
return false;

return true;
}

/*************************************************************************\
String getCardType()
return the cardtype.
\*************************************************************************/
function getCardType() {
return this.cardtype;
}

/*************************************************************************\
String getExpiryDate()
return the expiry date.
\*************************************************************************/
function getExpiryDate() {
return this.month + "/" + this.year;
}

/*************************************************************************\
boolean isCardNumber([String cardnumber])
return true if cardnumber pass the luhncheck and the rules, else return
false.
\*************************************************************************/
function isCardNumber() {
var argv = isCardNumber.arguments;
var argc = isCardNumber.arguments.length;
var cardnumber = (argc > 0) ? argv[0] : this.cardnumber;

if (!this.luhnCheck())
return false;

for (var n = 0; n < this.len.size; n++)
if (cardnumber.toString().length == this.len[n]) {
for (var m = 0; m < this.rules.size; m++) {
var headdigit = cardnumber.substring(0, this.rules[m].toString().length);
if (headdigit == this.rules[m])
return true;
}
return false;
}

return false;
}

/*************************************************************************\
boolean isExpiryDate([int year, int month])
return true if the date is a valid expiry date,
else return false.
\*************************************************************************/
function isExpiryDate() {
var argv = isExpiryDate.arguments;
var argc = isExpiryDate.arguments.length;

year = argc > 0 ? argv[0] : this.year;
month = argc > 1 ? argv[1] : this.month;

if (!isNum(year+""))
return false;
if (!isNum(month+""))
return false;
today = new Date();
expiry = new Date(year, month);
if (today.getTime() > expiry.getTime())
return false;
else
return true;
}

/*************************************************************************\
boolean isNum(String argvalue)
return true if argvalue contains only numeric characters,
else return false.
\*************************************************************************/
function isNum(argvalue) {
argvalue = argvalue.toString();

if (argvalue.length == 0)
return false;

for (var n = 0; n < argvalue.length; n++)
if (argvalue.substring(n, n+1) < "0" || argvalue.substring(n, n+1) > "9")
return false;

return true;
}

/*************************************************************************\
boolean luhnCheck([String CardNumber])
return true if CardNumber pass the luhn check else return false.
Reference: http://www.ling.nwu.edu/~sburke/pub/luhn_lib.pl
\*************************************************************************/
function luhnCheck() {
var argv = luhnCheck.arguments;
var argc = luhnCheck.arguments.length;

var CardNumber = argc > 0 ? argv[0] : this.cardnumber;

if (! isNum(CardNumber)) {
return false;
}

var no_digit = CardNumber.length;
var oddoeven = no_digit & 1;
var sum = 0;

for (var count = 0; count < no_digit; count++) {
var digit = parseInt(CardNumber.charAt(count));
if (!((count & 1) ^ oddoeven)) {
digit *= 2;
if (digit > 9)
      digit -= 9;
}
sum += digit;
}
if (sum % 10 == 0)
return true;
else
return false;
}

/*************************************************************************\
ArrayObject makeArray(int size)
return the array object in the size specified.
\*************************************************************************/
function makeArray(size) {
this.size = size;
return this;
}

/*************************************************************************\
CardType setCardNumber(cardnumber)
return the CardType object.
\*************************************************************************/
function setCardNumber(cardnumber) {
this.cardnumber = cardnumber;

return this;
}

/*************************************************************************\
CardType setCardType(cardtype)
return the CardType object.
\*************************************************************************/
function setCardType(cardtype) {
this.cardtype = cardtype;

return this;
}

/*************************************************************************\
CardType setExpiryDate(year, month)
return the CardType object.
\*************************************************************************/
function setExpiryDate(year, month) {
this.year = year;
this.month = month;

return this;
}

/*************************************************************************\
CardType setLen(len)
return the CardType object.
\*************************************************************************/
function setLen(len) {
// Create the len array.
if (len.length == 0 || len == null)
len = "13,14,15,16,19";

var tmplen = len;
n = 1;
while (tmplen.indexOf(",") != -1) {
tmplen = tmplen.substring(tmplen.indexOf(",") + 1, tmplen.length);
n++;
}
this.len = new makeArray(n);
n = 0;
while (len.indexOf(",") != -1) {
var tmpstr = len.substring(0, len.indexOf(","));
this.len[n] = tmpstr;
len = len.substring(len.indexOf(",") + 1, len.length);
n++;
}
this.len[n] = len;

return this;
}

/*************************************************************************\
CardType setRules()
return the CardType object.
\*************************************************************************/
function setRules(rules) {
// Create the rules array.
if (rules.length == 0 || rules == null)
rules = "0,1,2,3,4,5,6,7,8,9";

var tmprules = rules;
n = 1;
while (tmprules.indexOf(",") != -1) {
tmprules = tmprules.substring(tmprules.indexOf(",") + 1, tmprules.length);
n++;
}
this.rules = new makeArray(n);
n = 0;
while (rules.indexOf(",") != -1) {
var tmpstr = rules.substring(0, rules.indexOf(","));
this.rules[n] = tmpstr;
rules = rules.substring(rules.indexOf(",") + 1, rules.length);
n++;
}
this.rules[n] = rules;

return this;
}

</script>
</head>
<body bgcolor="#ffffff">
<h2>Credit Card Number Validator</h2>
<hr>
<blockquote>
<font color="#ff0000">Alert!
Please do not use a real card number and valid expiry date to test. If you
really want to do it, please check the source first, make sure it will not
submit the card number.<br></font>
<form name="ThisForm">
Card Number: <input name="CardNumber" size="16" maxlength="19"><br>
Card Type:
<select name="CardType">
<option value="MasterCard">MasterCard
<option value="VisaCard">Visa
<option value="AmExCard">AmEx
<option value="DinersClubCard">Diners Club
<option value="DiscoverCard">Discover
<option value="enRouteCard">enRoute
<option value="JCBCard">JCB
<option value="LuhnCheckSum">luhn check only
</select>
<br>
Expiry Date: Month
<select name="ExpMon">
<option value="1" selected>1
<option value="2">2
<option value="3">3
<option value="4">4
<option value="5">5
<option value="6">6
<option value="7">7
<option value="8">8
<option value="9">9
<option value="10">10
<option value="11">11
<option value="12">12
</select>
Year <input name="ExpYear" size="2" maxlength="2">(Range: 1997~2020)<br>
<input type="button" value="Check" OnClick="CheckCardNumber(this.form)"><br>
</form>
---------------------------------------------------------------



<SCRIPT>

function checkcc(){

failed=false
Str=document.cc.number.value
newStr=''
card=''

month_index = document.cc.exp_month.selectedIndex
exp_month = document.cc.exp_month.options[month_index].text

year_index = document.cc.exp_year.selectedIndex
exp_year = document.cc.exp_year.options[year_index].text

d=new Date()
cur_month = d.getMonth() + 1
cur_year = d.getYear() + 1900

//get card type
if(document.cc[0].checked){card="master"}
if(document.cc[1].checked){card="visa"}
if(document.cc[2].checked){card="amex"}

if (card=='') {
error("You did not choose a card type")
return
}

//check the expiration date
if (exp_year < cur_year) {
error("Your card has expired")
return
}

if ((exp_year == cur_year) && (exp_month < cur_month)) {
error("Your card has expired")
return
}

//remove spaces and dashes
for (var k = 0; k < Str.length; k++){
var oneChar = Str.charAt(k)
if ((oneChar != " ") && (oneChar != "-")) {
newStr += Str.charAt(k)

}
}

//check for digits only

for (var k = 0; k < newStr.length; k++){
var oneChar = newStr.charAt(k)
if (oneChar < "0" || oneChar > "9") {
error("Invalid characters in number.")
return

}

}

//check length for card type

if(card == "visa"){
if((newStr.length != "13") && (newStr.length != "16")){
error("Incorrect number of digits.")
return
}

}

if(card == "master"){
if(newStr.length != "16"){
error("Incorrect number of digits.")
return
}

}

if(card == "amex"){
if(newStr.length != "15"){
error("Incorrect number of digits.")
return
}

}

//verify Mod 10

if(newStr.length == "13"){len13()}
if(newStr.length == "15"){len15()}
if(newStr.length == "16"){len16()}

// if all tests passed
if (!failed){
//whatever redirection is necessary goes here
alert("The credit card number is valid.")

}

}//end of checkcc function

function len13(){
cc0 = newStr.charAt(0)
cc1 = newStr.charAt(1)
cc2 = newStr.charAt(2)
cc3 = newStr.charAt(3)
cc4 = newStr.charAt(4)
cc5 = newStr.charAt(5)
cc6 = newStr.charAt(6)
cc7 = newStr.charAt(7)
cc8 = newStr.charAt(8)
cc9 = newStr.charAt(9)
cc10 = newStr.charAt(10)
cc11 = newStr.charAt(11)
cc12 = newStr.charAt(12)

cc1a = cc1 * 2
cc3a = cc3 * 2
cc5a = cc5 * 2
cc7a = cc7 * 2
cc9a = cc9 * 2
cc11a = cc11 * 2

if(cc1a >= 10) {
cc1a=cc1a.toString()
cc1b = cc1a.charAt(0)
cc1c = cc1a.charAt(1)
cc1 = parseFloat(cc1b) + parseFloat(cc1c)
}
else {
cc1 = cc1a
}

if(cc3a >= 10) {

cc3a=cc3a.toString()
cc3b = cc3a.charAt(0)
cc3c = cc3a.charAt(1)
cc3 = parseFloat(cc3b) + parseFloat(cc3c)

}

else {
cc3 = cc3a
}

if (cc5a >= 10) {
cc5a=cc5a.toString()
cc5b = cc5a.charAt(0)
cc5c = cc5a.charAt(1)
cc5 = parseFloat(cc5b) + parseFloat(cc5c)

}

else {
cc5 = cc5a
}

if (cc7a >= 10) {
cc7a=cc7a.toString()
cc7b = cc7a.charAt(0)
cc7c = cc7a.charAt(1)
cc7 = parseFloat(cc7b) + parseFloat(cc7c)
}

else {
cc7 = cc7a
}

if (cc9a >= 10) {
cc9a=cc9a.toString()
cc9b = cc9a.charAt(0)
cc9c = cc9a.charAt(1)
cc9 = parseFloat(cc9b) + parseFloat(cc9c)
}

else {
cc9 = cc9a
}

if (cc11a >= 10) {
cc11a=cc11a.toString()
cc11b = cc11a.charAt(0)
cc11c = cc11a.charAt(1)
cc11 = parseFloat(cc11b) + parseFloat(cc11c)
}

else {
cc11 = cc11a
}

value = 0
value +=parseFloat(cc0)
value +=parseFloat(cc1)
value +=parseFloat(cc2)
value +=parseFloat(cc3)
value +=parseFloat(cc4)
value +=parseFloat(cc5)
value +=parseFloat(cc6)
value +=parseFloat(cc7)
value +=parseFloat(cc8)
value +=parseFloat(cc9)
value +=parseFloat(cc10)
value +=parseFloat(cc11)
value +=parseFloat(cc12)

value=value.toString()

if (value.charAt(1) != 0){

error("Invalid card number.")
return
}

}

function len15(){
cc0 = newStr.charAt(0)
cc1 = newStr.charAt(1)
cc2 = newStr.charAt(2)
cc3 = newStr.charAt(3)
cc4 = newStr.charAt(4)
cc5 = newStr.charAt(5)
cc6 = newStr.charAt(6)
cc7 = newStr.charAt(7)
cc8 = newStr.charAt(8)
cc9 = newStr.charAt(9)
cc10 = newStr.charAt(10)
cc11 = newStr.charAt(11)
cc12 = newStr.charAt(12)
cc13 = newStr.charAt(13)
cc14 = newStr.charAt(14)

cc1a = cc1 * 2
cc3a = cc3 * 2
cc5a = cc5 * 2
cc7a = cc7 * 2
cc9a = cc9 * 2
cc11a = cc11 * 2
cc13a = cc13 * 2

if(cc1a >= 10) {
cc1a=cc1a.toString()
cc1b = cc1a.charAt(0)
cc1c = cc1a.charAt(1)
cc1 = parseFloat(cc1b) + parseFloat(cc1c)
}
else {
cc1 = cc1a
}

if(cc3a >= 10) {

cc3a=cc3a.toString()
cc3b = cc3a.charAt(0)
cc3c = cc3a.charAt(1)
cc3 = parseFloat(cc3b) + parseFloat(cc3c)
}

else {
cc3 = cc3a
}

if (cc5a >= 10) {
cc5a=cc5a.toString()
cc5b = cc5a.charAt(0)
cc5c = cc5a.charAt(1)
cc5 = parseFloat(cc5b) + parseFloat(cc5c)
}

else {
cc5 = cc5a
}

if (cc7a >= 10) {
cc7a=cc7a.toString()
cc7b = cc7a.charAt(0)
cc7c = cc7a.charAt(1)
cc7 = parseFloat(cc7b) + parseFloat(cc7c)
}

else {
cc7 = cc7a
}

if (cc9a >= 10){
cc9a=cc9a.toString()
cc9b = cc9a.charAt(0)
cc9c = cc9a.charAt(1)
cc9 = parseFloat(cc9b) + parseFloat(cc9c)
}

else {
cc9 = cc9a
}

if (cc11a >= 10) {
cc11a=cc11a.toString()
cc11b = cc11a.charAt(0)
cc11c = cc11a.charAt(1)
cc11 = parseFloat(cc11b) + parseFloat(cc11c)
}

else {
cc11 = cc11a
}

if (cc13a >= 10) {
cc13a=cc13a.toString()
cc13b = cc13a.charAt(0)
cc13c = cc13a.charAt(1)
cc13 = parseFloat(cc13b) + parseFloat(cc13c)
}

else {
cc13 = cc13a
}

value = 0
value +=parseFloat(cc0)
value +=parseFloat(cc1)
value +=parseFloat(cc2)
value +=parseFloat(cc3)
value +=parseFloat(cc4)
value +=parseFloat(cc5)
value +=parseFloat(cc6)
value +=parseFloat(cc7)
value +=parseFloat(cc8)
value +=parseFloat(cc9)
value +=parseFloat(cc10)
value +=parseFloat(cc11)
value +=parseFloat(cc12)
value +=parseFloat(cc13)
value +=parseFloat(cc14)

value=value.toString()

if (value.charAt(1) != 0) {

error("Invalid card number.")
return
}
}

function len16() {
cc0 = newStr.charAt(0)
cc1 = newStr.charAt(1)
cc2 = newStr.charAt(2)
cc3 = newStr.charAt(3)
cc4 = newStr.charAt(4)
cc5 = newStr.charAt(5)
cc6 = newStr.charAt(6)
cc7 = newStr.charAt(7)
cc8 = newStr.charAt(8)
cc9 = newStr.charAt(9)
cc10 = newStr.charAt(10)
cc11 = newStr.charAt(11)
cc12 = newStr.charAt(12)
cc13 = newStr.charAt(13)
cc14 = newStr.charAt(14)
cc15 = newStr.charAt(15)

cc0a = cc0 * 2
cc2a = cc2 * 2
cc4a = cc4 * 2
cc6a = cc6 * 2
cc8a = cc8 * 2
cc10a = cc10 * 2
cc12a = cc12 * 2
cc14a = cc14 * 2

if(cc0a >= 10) {
cc0a=cc0a.toString()
cc0b = cc0a.charAt(0)
cc0c = cc0a.charAt(1)
cc0 = parseFloat(cc0b) + parseFloat(cc0c)
}
else {
cc0 = cc0a
}

if(cc2a >= 10) {

cc2a=cc2a.toString()
cc2b = cc2a.charAt(0)
cc2c = cc2a.charAt(1)
cc2 = parseFloat(cc2b) + parseFloat(cc2c)
}

else {
cc2 = cc2a
}

if (cc4a >= 10) {
cc4a=cc4a.toString()
cc4b = cc4a.charAt(0)
cc4c = cc4a.charAt(1)
cc4 = parseFloat(cc4b) + parseFloat(cc4c)
}

else {
cc4 = cc4a
}

if (cc6a >= 10) {
cc6a=cc6a.toString()
cc6b = cc6a.charAt(0)
cc6c = cc6a.charAt(1)
cc6 = parseFloat(cc6b) + parseFloat(cc6c)
}

else {
cc6 = cc6a
}

if (cc8a >= 10) {
cc8a=cc8a.toString()
cc8b = cc8a.charAt(0)
cc8c = cc8a.charAt(1)
cc8 = parseFloat(cc8b) + parseFloat(cc8c)
}

else {
cc8 = cc8a
}

if (cc10a >= 10) {
cc10a=cc10a.toString()
cc10b = cc10a.charAt(0)
cc10c = cc10a.charAt(1)
cc10 = parseFloat(cc10b) + parseFloat(cc10c)
}

else {
cc10 = cc10a
}

if (cc12a >= 10) {
cc12a=cc12a.toString()
cc12b = cc12a.charAt(0)
cc12c = cc12a.charAt(1)
cc12 = parseFloat(cc12b) + parseFloat(cc12c)
}

else {
cc12 = cc12a
}

if (cc14a >= 10) {
cc14a=cc14a.toString()
cc14b = cc14a.charAt(0)
cc14c = cc14a.charAt(1)
cc14 = parseFloat(cc14b) + parseFloat(cc14c)
}

else {
cc14 = cc14a
}

value = 0
value +=parseFloat(cc0)
value +=parseFloat(cc1)
value +=parseFloat(cc2)
value +=parseFloat(cc3)
value +=parseFloat(cc4)
value +=parseFloat(cc5)
value +=parseFloat(cc6)
value +=parseFloat(cc7)
value +=parseFloat(cc8)
value +=parseFloat(cc9)
value +=parseFloat(cc10)
value +=parseFloat(cc11)
value +=parseFloat(cc12)
value +=parseFloat(cc13)
value +=parseFloat(cc14)
value +=parseFloat(cc15)

value=value.toString()

if (value.charAt(1) != 0) {

error("Invalid card number.")
return
}

}

function error(msg) {
alert(msg)
failed=true
}

</SCRIPT>
</HEAD>
<BODY BGCOLOR="#FFFFFF">

<H2 ALIGN=center>Credit Card Number Verification</H2>
<HR>

This script can be used to verify the validity of a credit card number before it is uploaded to the server. It validates numbers for cards that use a Mod 10 algorithm.<P>
JavaScript by <A HREF="mailto:dturley@pobox.com">David Turley</A><HR><P>

<FORM NAME=cc>
<TABLE><TR VALIGN=top><TD>

Choose a credit card type:</TD><TD>
<INPUT TYPE="radio" NAME="type" VALUE="master" onClick=0>Mastercard<BR>
<INPUT TYPE="radio" NAME="type" VALUE="visa" onClick=0>VISA<BR>
<INPUT TYPE="radio" NAME="type" VALUE="amex" onClick=0>American Express
</TD></TR>

<TR VALIGN=top><TD>
Enter a number:</TD><TD>
<INPUT TYPE="text" SIZE=25 NAME=number><P>
</TD></TR>

<TR VALIGN=top><TD>
Enter expiration date: Month
<SELECT NAME="exp_month">
<OPTION VALUE="01"> 01
<OPTION VALUE="02"> 02
<OPTION VALUE="03"> 03
<OPTION VALUE="04"> 04
<OPTION VALUE="05"> 05
<OPTION VALUE="06"> 06
<OPTION VALUE="07"> 07
<OPTION VALUE="08"> 08
<OPTION VALUE="09"> 09
<OPTION VALUE="10"> 10
<OPTION VALUE="11"> 11
<OPTION VALUE="12"> 12
</SELECT></TD><TD>Year

<SELECT NAME="exp_year">
<OPTION VALUE="1997"> 1997
<OPTION VALUE="1998"> 1998
<OPTION VALUE="1999"> 1999
<OPTION VALUE="2000"> 2000
<OPTION VALUE="2001"> 2001
</SELECT>
</TD></TR>

</TABLE>
<INPUT TYPE="button" VALUE="CHECK" onClick="checkcc()">
<INPUT TYPE="reset"
VALUE="CLEAR">

</FORM>

Credit Card and Expiry validation

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