var Cards = new makeArray(4);

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("DiscoverCard", "6011", "16");
var DiscoverCard = Cards[3];

var LuhnCheckSum = Cards[4] = new CardType();

/*************************************************************************\
CheckCardNumber(form)
function called when users click the "check" button.
\*************************************************************************/
function CheckCardNumber(form) {

	

var tmpyear;
if(getCheckedValue(document.forms['form1'].elements['shipcctype'])==""){
alert("Please Select the Card Type.");
//form.CardType.focus();
document.getElementById('paypalcard').focus();
return false;
}
/*if(document.getElementById('paypal').checked==true)
	{
		validcheck(form);
	}
	else
	{*/
	
if (form.shipccnumber.value.length == 0) {
alert("Please Enter Credit Card Number.");
form.shipccnumber.focus();

return false;
}

if (form.card_expiration_month.value.length == 0) {
alert("Please Select Month");
form.card_expiration_month.focus();

return false;
}

if (form.card_expiration_year.value.length == 0) {
alert("Please Select Year");
form.card_expiration_year.focus();

return false;
}



if (form.card_expiration_year.options[form.card_expiration_year.selectedIndex].value.length == 0) {
alert("Please Select the Expiration Year.");
form.card_expiration_year.focus();
return false;
}
if (form.card_expiration_year.options[form.card_expiration_year.selectedIndex].value > 96)
tmpyear = "19" + form.card_expiration_year.options[form.card_expiration_year.selectedIndex].value;
else if (form.card_expiration_year.options[form.card_expiration_year.selectedIndex].value < 21)
tmpyear = "20" + form.card_expiration_year.options[form.card_expiration_year.selectedIndex].value;
else {
alert("The Expiration Year is not valid.");
return false;
}
tmpmonth = form.card_expiration_month.options[form.card_expiration_month.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("This card has already expired.");
return false;
}
//card = form.CardType.options[form.CardType.selectedIndex].value;
card=getCheckedValue(document.forms['form1'].elements['shipcctype']);

var retval = eval(card + ".checkCardNumber(\"" + form.shipccnumber.value +
"\", " + tmpyear + ", " + tmpmonth + ");");

cardname = "";

if (retval)

	{
		if (checkcvv(form))
		{
			//alert("This card number appears to be valid.");

			validcheck(form);
		}

// comment this out if used on an order form

	}

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.shipccnumber.value, tmpyear, tmpmonth)) {
cardname = Cards[n].getCardType();
break;
   }
}
if (cardname.length > 0) {
alert("This looks like a " + cardname + " number, not a " + card + " number.");
}
else {
alert("Please enter valid credit card number");
return false;
      }
   }


}


// return the value of the radio button that is checked
// return an empty string if none are checked, or
// there are no radio buttons
function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}


/*************************************************************************\
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";

this.setCardNumber = setCardNumber;  // set CardNumber method.
this.setCardType = setCardType;  // setCardType method.
this.setLen = setLen;  // setLen method.
this.setRules = setRules;  // setRules method.
this.setExpiryDate = setExpiryDate;  // setExpiryDate method.

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

this.checkCardNumber = checkCardNumber;  // checkCardNumber method.
this.getExpiryDate = getExpiryDate;  // getExpiryDate method.
this.getCardType = getCardType;  // getCardType method.
this.isCardNumber = isCardNumber;  // isCardNumber method.
this.isExpiryDate = isExpiryDate;  // isExpiryDate method.
this.luhnCheck = luhnCheck;// luhnCheck method.
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);


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

this.setExpiryDate(year, month);

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;
}
//  End -->
function checkcvv(form)
{	
if (form.shipseccode.value.length == 0) {
alert("Please enter a Card Code.");
form.shipseccode.focus();
return false;
}
card=getCheckedValue(document.forms['form1'].elements['shipcctype']);
if(form.shipseccode.value.length <3)
	{
		
		alert('Not a Valid length of code');
		form.shipseccode.focus();
		return false;
	}
if(form.shipseccode.value.length==3)
	{
	 if (card == "AmExCard")
	  {
		alert('Not a valid card type code');
		form.shipseccode.focus();
		return false;
	  }
	     if (form.shipseccode.value =="000")
		{
			alert('Not a Valid code');
			form.shipseccode.focus();
			return false;
		}
	}
if(form.shipseccode.value.length >3)
	{
	
	 if (form.shipseccode.value =="0000")
		{
			alert('Not a Valid code');
			form.shipseccode.focus();
			return false;
		}
     if (card !="AmExCard")
	  {
		alert('Not a valid card type code');
		form.shipseccode.focus();
		return false;
	  }
	}
//}
return true;
}
function validcheck(form)
{
	if(
		 RequiredField('billfname','Please Enter First Name')&&
		 MinCount('billfname',3,'Please Enter Minimum 3 Characters For First Name')&&
		 RequiredField('billlname','Please Enter Last Name')&&	
		 MinCount('billlname',1,'Please Enter Minimum 1 Character For Last Name')&&		 	
		 RequiredField('billaddress','Please Enter Address')&&
		 MinCount('billaddress',3,'Please Enter Minimum 3 Characters For Address')&&
		 RequiredField('billcity','Please Enter City')&& 
		 MinCount('billcity',3,'Please Enter Minimum 3 Characters For City')&&
		 RequiredField('billstate','Please Enter State/Province') &&
		 MinCount('billstate',2,'Please Enter Minimum 2 Characters For State')&&
		 RequiredField('billcountry','Please Enter Country')&&	
		 MinCount('billcountry',2,'Please Enter Minimum 2 Characters For Country')&& 
		 RequiredField('billzip','Please Enter Zip/Postal Code')&& 
		 ZipCodeValidation('billzip')&&
		 RequiredField('billphone','Please Enter Phone Number')&&
		 RequiredField('billemailid','Please Enter Email Address')&&
		 EmailValidation('billemailid') &&
		 
		 
		
		 RequiredField('shipfname','Please Enter First Name')&&
		 MinCount('shipfname',3,'Please Enter Minimum 3 Characters For First Name')&&
		 RequiredField('shiplname','Please Enter Last Name')&&	
		 MinCount('shiplname',1,'Please Enter Minimum 1 Character For Last Name')&&		 
		 RequiredField('shipaddress','Please Enter Address')&&
		 MinCount('shipaddress',3,'Please Enter Minimum 3 Characters For Address')&&
		 RequiredField('shipcity','Please Enter City')&&  
		 MinCount('shipcity',3,'Please Enter Minimum 3 Characters For City')&&
		 RequiredField('shipstate','Please Enter State/Province') &&
		 MinCount('shipstate',2,'Please Enter Minimum 2 Characters For State')&&
		 RequiredField('shipcountry','Please Enter Country')&&
		 MinCount('shipcountry',2,'Please Enter Minimum 2 Characters For Country')&&
		 RequiredField('shipzip','Please Enter Zip/Postal Code')&& 
		 ZipCodeValidation('shipzip')&&
		 RequiredField('shipphone','Please Enter Phone Number')&&
		 RequiredField('shipemailid','Please Enter Email Address')&&
		 EmailValidation('shipemailid')
	    
		)
	{
			if(document.getElementById('chkship').checked)
			{
				if(((document.getElementById('shipfname').value=="")||(document.getElementById('shipfname').value==" "))&&
				((document.getElementById('shiplname').value=="")||(document.getElementById('shiplname').value==" "))&&
				((document.getElementById('shipemailid').value=="")||(document.getElementById('shipemailid').value==" "))&&
				((document.getElementById('shipphone').value=="")||(document.getElementById('shipphone').value==" "))&&
				((document.getElementById('shipaddress').value == "")||(document.getElementById('shipaddress').value == ""))&&
				((document.getElementById('shipcountry').value == "")||(document.getElementById('shipcountry').value == ""))&&
				((document.getElementById('shipcity').value == "")||(document.getElementById('shipcity').value == ""))&&
				((document.getElementById('shipstate').value == "")||(document.getElementById('shipstate').value == ""))&&
				((document.getElementById('shipzip').value=="")||(document.getElementById('shipzip').value==" ")))
				{
					alert("Shipping Information not matched with Billing Information");
					return false;
				}

				if((document.getElementById('shipfname').value!=document.getElementById('billfname').value)||
				(document.getElementById('shiplname').value!=document.getElementById('billlname').value)||
				(document.getElementById('shipemailid').value!=document.getElementById('billemailid').value)||
				(document.getElementById('shipphone').value!=document.getElementById('billphone').value)||
				(document.getElementById('shipaddress').value!=document.getElementById('billaddress').value)||
				(document.getElementById('shipcity').value!=document.getElementById('billcity').value)||
				(document.getElementById('shipstate').value!=document.getElementById('billstate').value)||
				(document.getElementById('shipzip').value!=document.getElementById('billzip').value)||
				(document.getElementById('shipcountry').value!=document.getElementById('billcountry').value))
				{
					alert("Shipping Information not matched with Billing Information");
					return false;
				}
			}
			
			document.form1.action="authorize/php_aim1.php";
			document.form1.submit();
	}
		else
			return false;
}