function funcSwapPropertyImage(paramCallerImage)
{
	//frmPropertyDetails
	
	objLargeImage = document.getElementById("imgPropertyImageLarge");
	objLargeImage.src = "img/PropertyImages/"+paramCallerImage;
	//alert(paramCallerImage +"   " +objLargeImage.src);
	return false;
}

//// Begin
		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(month,year,paramCardType,paramCardNumber) 
		{
			var tmpyear;
			
			tmpyear = year;
			tmpmonth = month;
			// 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;
			}
			card = paramCardType;
			var retval = eval(card + ".checkCardNumber(\"" + paramCardNumber +
			"\", " + tmpyear + ", " + tmpmonth + ");");
			cardname = "";
			if (retval)
			{
				// comment this out if used on an order form
				//alert("This card number appears to be valid.");
				return true;	
			}
			else 
			{
				// The cardnumber has the valid luhn checksum, but we want to know which
				// cbo_card_type it belongs to.
				for (var n = 0; n < Cards.size; n++) 
				{
					if (Cards[n].checkCardNumber(paramCardNumber, tmpyear, tmpmonth)) 
					{
						cardname = Cards[n].getCardType();
						break;
				    }
				}
				if (cardname.length > 0) 
				{
					//alert("This looks like a " + cardname + " number, not a " + card + " number.");
				}
				else 
				{
					//alert("This card number is not valid.");
				}
			}
		}
		/*************************************************************************\
		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 tempRule = this.rules[m].toString();
					var iLengthOfTemp = tempRule.toString().length;
					//alert(iLengthOfTemp+"   " +cardnumber);
					var headdigit = cardnumber.toString().substring(0, iLengthOfTemp);
					//alert(headdigit);
					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 -->