// JScript source code
var Cards = new makeArray(4);
	Cards[0] = new CardType("BankCard", "56","16");
var BankCard = Cards[0];
	Cards[1] = new CardType("MasterCard", "51,52,53,54,55","16");
var MasterCard = Cards[1];
	Cards[2] = new CardType("VisaCard", "4","13,16");
var VisaCard = 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];
    Cards[7] = new CardType("VoucherCard", "30","16");
var VoucherCard = Cards[7];
	Cards[8] = new CardType("AmExCard", "34,37","15");
var AmExCard = Cards[8];

var LuhnCheckSum = Cards[9] = new CardType();

 var tdate =new Date();
 var tday  =tdate.getDay();
 var tmonth=tdate.getMonth()+1;
 var tyear =tdate.getFullYear();

/*************************************************************************\
CheckCardNumber(form)
function called when users click the "check" button.
\*************************************************************************/
function CheckCardNumber(form) 
{
	var tmpyear;
	if (form.ExpYear.value.length == 0) 
	{
		alert("Please enter the Expiration 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("The expiry date is invalid.");
		form.ExpYear.focus();
		return false;
	}
	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("This card has already expired.");
		form.ExpMon.focus();
		return false;
	}
	card = form.CardType.options[form.CardType.selectedIndex].value;
	var retval = eval(card + ".checkCardNumber(\"" + form.CardNumber.value + "\", " + tmpyear + ", " + tmpmonth + ");");

	cardname = "";

	/* Credit card was validated. */
	if (retval)
		return true;
	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 looks like a " + cardname + " number, not a " + card + " number.");
		}
		else 
		{
			alert("This card number is not valid.\n\nPlease check details and try again.");
		}
		form.CardNumber.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 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;
	
//alert("isCardNumber - ["+this.len.size+"]")	
//alert("1");
	if (!this.luhnCheck())
	{

		//alert("!Luhn");
		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;
//alert(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;
}

//******************************other functions

function anyObj(divName)
{
 this.IE5=this.NN4=this.NN6=false
 if(document.all)this.IE5=true
 else if(document.layers)this.NN4=true
 else if(document.getElementById)this.NN6=true
	
 if(this.NN4)this.obj=eval("document."+divName)
 if(this.IE5)this.obj=eval("document.all."+divName)
 if(this.NN6)this.obj=eval("document.getElementById(\""+divName+"\")")

 this.show = showDiv
 this.hide = hideDiv
}

function showDiv()
{
  if(this.NN4) this.obj.visibility="visible"
  else this.obj.style.visibility="visible"
}

function hideDiv()
{
 if(this.NN4) this.obj.visibility="hidden";
 else this.obj.style.visibility="hidden";
}

function check_show()
{
 if (form.Resource.value == "Business Card" || form.Resource.value == "Leaflet")
 {
   myObj.show();
 }
 else myObj.hide();
}

function initialize() 
{
 myObj = new anyObj("tableDiv"); myObj.hide();
}

function hide_me(ref)
{
 ref = new anyObj(ref); ref.hide();
}

function show_me(ref)
{
 ref = new anyObj(ref); ref.show();
}

function validate(type)
{
 var number = form.CardNumber.value;
 if(form.Form_Type.value=='Subscribe') return false;
 if (form.CardType.value == "") { alert("Please select your Mode of Payment.");  form.CardType.focus(); return false; }
 else if (number == ""
          || (form.CardType.value=="VoucherCard" && number.length != 4)
          || (form.CardType.value!="VoucherCard" && number.length != 16))
 { alert("Please enter a valid Card Number (excluding spaces).");  form.CardNumber.focus(); return false; }
 else if (form.ExpMon.value == "00" || (parseFloat(form.ExpMon.value)<tmonth && parseFloat(form.ExpYear.value)==tyear) ){ alert("Please select your card month expiry.");  form.ExpMon.focus(); return false; }
 else if (form.ExpYear.value == "00" || parseFloat(form.ExpYear.value)<tyear){ alert("Please select your card year expiry."); form.ExpYear.focus(); return false; }
 else if (form.CardName.value == "") { alert("Please enter Name as on Card.");  form.CardName.focus(); return false; }
 else if (form.CardVin && form.CardVin.value == "") { alert("Please enter Vin located on back of Card.");  form.CardVin.focus(); return false; }
 else if (form.Amount.value == "")   { alert("Amount not entered - please enter and try again.");  form.Amount.focus(); return false; }

 if(form.CardType.value=="VoucherCard")
 {
  var valid='F';
  var MesDates='Voucher expiry dates are incorrect. \n\n Please check entries and try again.';
  var MesNo='Number is incorrect. \n\n Please check details and try again.';

  if(form.CardNumber.value== "6523"
     || form.CardNumber.value== "6524"
     || form.CardNumber.value== "4521"
     || form.CardNumber.value== "4522"
     || form.CardNumber.value== "4523"
     || form.CardNumber.value== "4524"
     || form.CardNumber.value== "4525") valid='T';

  if(valid != 'T'){ alert(MesNo); return false; }
  else if((form.ExpMon.value != "08" && form.ExpMon.value != "06") || form.ExpYear.value != "2005"){ alert(MesDates); return false; }
  else return true;
 }
 else if (CheckCardNumber(this.form)==true)
 {
  if (type==1)alert("Thank you for your purchase.");
  else if(type==2) alert("Thank you for your application.\n\nWe will attend to your order and notify via email as soon as possible");
  else if(type==3) alert("Thank you for your sponsorship.\n\nWe will attend to your purchase and notify via email as soon as possible");
  else if(type==4) alert("Thank you for your registration.\n\nPlease ensure that you print out the details of the returned page for your records.");
  return true;
 }
 else return false;
}

function add(ref){
  total=ref;
  var dec = Math.pow(10, 2);
  total = (Math.round(total* dec))/dec;
  return total;
}

function addcents(ref)
{
 var n , x ;
 for (n=0 ; n<=ref.length; n++)
 {
  if (ref.charAt(n)=='.')
  {
   for(x=n; x<n+3; x++){ if (ref.charAt(x)=='') ref+='0';}
   break;
  }
  else if (n==ref.length && ref.charAt(n-1)!='.'){ ref+='.00'; break;}
 }
 return ref;
}

function add_form(){
 form.First.value = window.opener.form.First.value;
 form.Last.value = window.opener.form.Last.value;
 form.Address.value = window.opener.form.address.value;
 form.Phone.value = window.opener.form.phone.value;
 form.Resource.value = window.opener.form.Resource.value;
 form.Refno.value = window.opener.form.refno.value;
 form.Email.value = window.opener.form.Email.value;
}

function buy(type){
 if(type==1) new_screen('./purchase/purchase.pl?Form_Name=Races&recipient=admin@auzform.com.au', 300);
 else new_screen('./purchase/purchase.pl?Form_Name=Subscribe&recipient=admin@auzform.com.au', 300);
}