//////////////////////////////CREDIT CARD////////////////////////////////////////
		
		////////Declaring Variables////////
		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();
		///////Main Function Calling Other sub functions
		function CheckCardNumber(form)
		{
		
			
			
			var tmpyear;
		
			////
				tmpyear= form.ctl00_cphContent_ddlCardExpYear.value
			/*	if (stryear > 96)
				tmpyear = "19" + stryear;
				else if (stryear < 21)
				tmpyear = "20" + stryear;
				else
				{
				alert("The Expiration Year is not valid.");
				return false;
				}*/
			///	
				tmpmonth = form.ctl00_cphContent_ddlCardExpMonth.value;
				
                
				if (!(new CardType()).isExpiryDate(tmpyear, tmpmonth))
				{
						alert("This card has already expired.");
				return false;
				}
			//
			
				card = form.ctl00_cphContent_ddlcardType.value;
				if (card==1)
				card="VisaCard";
				else if (card==2)
				card="MasterCard";
				else if (card==3)
				card="AmExCard";
				else if (card=4)
				card="DiscoverCard";				
				var retval = eval(card + ".checkCardNumber(\"" + form.ctl00_cphContent_tbCreNo.value +"\", " + tmpyear + ", " + tmpmonth + ");");
				cardname = "";
			if(retval==false)
			{
	
				for (var n = 0; n < Cards.size; n++)
				{
					if (Cards[n].checkCardNumber(form.ctl00_cphContent_tbCreNo.value, tmpyear, tmpmonth)) 
					{
					cardname = Cards[n].getCardType();
					break;
					}
				}
				if (cardname.length > 0) 
				{
				
				alert("This looks like a " + cardname + " number, not a " + card + " number.");
				return false;
				}
				else
				{
				alert("This card number is not valid.");
				return false;
				}
		 }
		 else
		 {
			return true;
		 }				
     }
				//
				
				////////////////////////////////////////
				/*************************************************************************\
				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);
				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;
						}
		
//////////////////////////////////////// Manual Credit Card Checking Added By Asghar /////////////////////////////////////////////////////////////
		
		 function CheckManualCardNumber(form)
		{
				var tmpyear;
			
			
			////
				var stryear = form.ctl00_cphContent_ddlCardExpYear.value
				if (stryear > 96)
				tmpyear = "19" + stryear;
				else if (stryear < 21)
				tmpyear = "20" + stryear;
				else
				{
				
				return false;
				}
			///	
				tmpmonth = form.ctl00_cphContent_ddlCardExpMonth.value;

				if (!(new CardType()).isExpiryDate(tmpyear, tmpmonth))
				{
				
				return false;
				}
			//
			   card = form.ctl00_cphContent_ddlcardType.value;
				if (card==1)
				card="VisaCard";
				else if (card==2)
				card="MasterCard";
				else if (card==3)
				card="AmExCard";
				else if (card=4)
				card="DiscoverCard";	
				
				var retval = eval(card + ".checkCardNumber(\"" + form.ctl00_cphContent_tbCreNo.value +"\", " + tmpyear + ", " + tmpmonth + ");");
				cardname = "";
			if(retval==false)
			{		
				
				return false;
				
		     }
		     else
		     {
			    return true;
		     }				
		 
		 
			return true;
	   }
	   
	                    /*************************************************************************\
						boolean isNum(String argvalue)
						return true if argvalue contains only numeric characters,
						else return false.
						\*************************************************************************/
						function isDecimalNum(argvalue) 
						{
						    argvalue = argvalue.toString();
                            var s;
						    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" || argvalue.substring(n,n+1) =='.')
						    //if (argvalue.substring(n, n+1) == "0" || argvalue.substring(n,n+1) == "9" || aragvalue.substring(n,n+1) ==".")
						    s=0;
						    else
						    return false;

						    return true;
						}