<!-- Begin
var Cards = new makeArray(4);
Cards[0] = new CardType("MasterCard", "51,52,53,54,55", "16");
var MasterCard = Cards[0];
Cards[1] = new CardType("Visa", "4", "13,16");
var Visa = 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];
Cards[4] = new CardType("DinersClub", "300,301,302,303,304,305,36,38", "14");
var DinersClub = Cards[4];
/*************************************************************************\
CheckCardNumber(form)
function called when users click the "check" button.
\*************************************************************************/
function CheckCardNumber(form)
{
	var tmpyear;
	var flgcredit;
	if (form.Ecom_Payment_Card_Number.value.length == 0)
	{
		alert("You must enter a Card Number.");
		form.Ecom_Payment_Card_Number.focus();
		return false;
	}

	//if (form.Ecom_Payment_Card_Number.value == "4111111111111111")
	//{
		//alert("Card Number is not valid.");
		//form.Ecom_Payment_Card_Number.focus();
		//return false;
	//}
	if ((form.Ecom_Payment_Card_Number.value.length < 13) || (form.Ecom_Payment_Card_Number.value.length > 19)) 
	{
		alert("You must enter a Valid Card Number.");
		form.Ecom_Payment_Card_Number.value="";
		form.Ecom_Payment_Card_Number.focus();
		return false;
	}
	
	tmpyear =form.Ecom_Payment_Card_ExpDate_Year.options[form.Ecom_Payment_Card_ExpDate_Year.selectedIndex].value;
	tmpmonth = form.Ecom_Payment_Card_ExpDate_Month.options[form.Ecom_Payment_Card_ExpDate_Month.selectedIndex].value;
	if(form.cardType.selectedIndex==0)
	{	alert('Please select a credit card from the list.');
		form.cardType.focus();
		return (false);
	}
	if(form.Ecom_Payment_Card_ExpDate_Month.selectedIndex==0)
		{	alert('Please select a month from the list.');
			form.Ecom_Payment_Card_ExpDate_Month.focus();
			return (false);
		}
	if(form.Ecom_Payment_Card_ExpDate_Year.selectedIndex==0)
		{	alert('Please select a year from the list.');
			form.Ecom_Payment_Card_ExpDate_Year.focus();
			return (false);
		}
	/*if (form.Ecom_Payment_Card_Code.value.length == 0)
	{
		alert("You must enter the CVV/CVV2 number");
		form.Ecom_Payment_Card_Code.focus();
		return false;
	}
	if (isNaN(form.Ecom_Payment_Card_Code.value) == true)
	{
		alert("Please enter numeric CVV/CVV2 number");
		form.Ecom_Payment_Card_Code.focus();
		return false;
	}
	if (form.Ecom_Payment_Card_Code.value.length < 3)
	{
		alert("Please enter a valid CVV/CVV2 number");
		form.Ecom_Payment_Card_Code.focus();
		return false;
	}*/
	if (!(new CardType()).isExpiryDate(tmpyear, tmpmonth))
	{
		alert("Check the Expiry Date.");
		return false;
	}
	if (form.cardName.value.length == 0)
	{
		alert("You must enter Name as on Credit Card");
		form.cardName.focus();
		return false;
	}
	if(!chkSpecialChar(form.cardName.value))
	{
		alert("You Cannot Enter Special Character in Name.");
		form.cardName.focus();
		return false;
	}
	card = form.cardType.options[form.cardType.selectedIndex].value;
	var retval = eval(card + ".checkCardNumber(\"" + form.Ecom_Payment_Card_Number.value + "\", " + tmpyear + ", " + tmpmonth + ");");
	cardname = "";
	if (retval)
		// comment this out if used on an order form
		//alert("This card number appears to be valid.");//Modified WTIL:Krishnan 27/8/2002
		return true; //Modified WTIL:Krishnan 27/8/2002
	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.Ecom_Payment_Card_Number.value, tmpyear, tmpmonth))
			{
				cardname = Cards[n].getCardType();
				break;
			}
		}
		if (cardname.length > 0)
		{
			alert("This looks like a " + cardname + " number, not a " + card + " number.");
			form.Ecom_Payment_Card_Number.focus();
			return false;
		}
		else 
		{
			alert("This card number is not valid.");
			form.Ecom_Payment_Card_Number.focus();
			return false;
		}
	}
}
/*************************************************************************\
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 Ecom_Payment_Card_Number = (argc > 0) ? argv[0] : this.Ecom_Payment_Card_Number;
	var year = (argc > 1) ? argv[1] : this.year;
	var month = (argc > 2) ? argv[2] : this.month;
	this.setCardNumber(Ecom_Payment_Card_Number);
	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 Ecom_Payment_Card_Number = (argc > 0) ? argv[0] : this.Ecom_Payment_Card_Number;
	if (!this.luhnCheck())
		return false;
	for (var n = 0; n < this.len.size; n++)
	if (Ecom_Payment_Card_Number.toString().length == this.len[n])
	{
		for (var m = 0; m < this.rules.size; m++)
		{
			var headdigit = Ecom_Payment_Card_Number.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.
\*************************************************************************/
function luhnCheck()
{
	var argv = luhnCheck.arguments;
	var argc = luhnCheck.arguments.length;
	var Ecom_Payment_Card_Number = argc > 0 ? argv[0] : this.Ecom_Payment_Card_Number;
	if (! isNum(Ecom_Payment_Card_Number))
	{
		return false;
	}
	var no_digit = Ecom_Payment_Card_Number.length;
	var oddoeven = no_digit & 1;
	var sum = 0;
	for (var count = 0; count < no_digit; count++)
	{
		var digit = parseInt(Ecom_Payment_Card_Number.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(Ecom_Payment_Card_Number)
{
	this.Ecom_Payment_Card_Number = Ecom_Payment_Card_Number;
	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;
}

/*Modified WTIL:VENU 10/12/02*/
/* this function will check and allow only characters and numbers and specialcharacter -
	this is used for login while entering the username or password other than -  other 
	special characters are not allowed
*/

function chkSpecialChar(values)
{
	var len=values.length
	var flag=false;
	for(var k=0;k<len;k++)
	{
		var sval=values.substring(k,k+1);
		var pval=sval.charCodeAt();
		if ((parseInt(pval)!=38)&& (parseInt(pval)!=34))
		{
		}
		else
		{
			flag=true;
			break;
		}
	}
	if(flag==true)
		{return false;}
	else
		{return true;}
}

/*End Modified WTIL:VENU 10/12/02*/
//  End -->
//-->