//TRIM FUNCTION
//
function trim(inputString) {
	   // Removes leading and trailing spaces from the passed string. Also removes
	   // consecutive spaces and replaces it with one space. If something besides
	   // a string is passed in (null, custom object, etc.) then return the input.
	   if (typeof inputString != "string") { return inputString; }
	   var retValue = inputString;
	   var ch = retValue.substring(0, 1);
	   while (ch == " ") { // Check for spaces at the beginning of the string
	      retValue = retValue.substring(1, retValue.length);
	      ch = retValue.substring(0, 1);
	   }
	   ch = retValue.substring(retValue.length-1, retValue.length);
	   while (ch == " ") { // Check for spaces at the end of the string
	      retValue = retValue.substring(0, retValue.length-1);
	      ch = retValue.substring(retValue.length-1, retValue.length);
	   }
	   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
	      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings
	   }
	   return retValue; // Return the trimmed string back to the user
} // Ends the "trim" function


function ValidateNo(NumStr, String){    
	for(var Idx=0; Idx<NumStr.length; Idx++)    
	{        
		var Char = NumStr.charAt(Idx);        
		var Match = false;        
		
		for(var Idx1=0; Idx1<String.length; Idx1++)        
		{            
			if(Char == String.charAt (Idx1))                
			Match = true;        
		}        
		if (!Match)            
			return false;    
		}    
	return true;
} 

function validateEmail(elementValue){      
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
   return emailPattern.test(elementValue); 
 }

 function Left(str, n)
/***
        IN: str - the string we are LEFTing
            n - the number of characters we want to return

        RETVAL: n characters from the left side of the string
***/
{
        if (n <= 0)     // Invalid bound, return blank string
                return "";
        else if (n > String(str).length)   // Invalid bound, return
                return str;                // entire string
        else // Valid bound, return appropriate substring
                return String(str).substring(0,n);
}

function Right(str, n)
/***
        IN: str - the string we are RIGHTing
            n - the number of characters we want to return

        RETVAL: n characters from the right side of the string
***/
{
        if (n <= 0)     // Invalid bound, return blank string
           return "";
        else if (n > String(str).length)   // Invalid bound, return
           return str;                     // entire string
        else { // Valid bound, return appropriate substring
           var iLen = String(str).length;
           return String(str).substring(iLen, iLen - n);
        }
}

 
 
 //use billing and shipping addresses are the same so auto fill the shipping on check
 function ship2Bill(frm) {

	if (frm.chkshippingsame.checked==true) {
		frm.sname.value=frm.bname.value;
		frm.saddr1.value=frm.baddr1.value;
		frm.scity.value=frm.bcity.value;
		frm.sstate.value=frm.bstate.value;
		frm.szip.value=frm.bzip.value;	
		frm.semailaddress.value=frm.emailaddress.value
		frm.sphone.value=frm.phone.value	
	}
	else {
		frm.sname.value='';
		frm.saddr1.value='';
		frm.scity.value='';
		frm.sstate.value='';
		frm.szip.value='';
		frm.semailaddress.value='';
		frm.sphone.value='';	
	}

}
 
 
//VALIDATE FUNCTION
//
function validateInput(theForm) {

	if (theForm.ygre67t3g4f8g84fg8g34f8.value !== "") {
		return;
	}

	if (trim(theForm.orderqty.value)==""){ 
		alert("Please select a quantity of gift cards!");
		return;
	}

	if (trim(theForm.orderamt.value)==""){ 
		alert("Please select an amount!");
		return;
	}

	if (trim(theForm.bname.value)==""){ 
		alert("Please enter your NAME as it appears on your card!");
		return;
	}

	if (trim(theForm.baddr1.value)==""){ 
		alert("Please enter your ADDRESS!");
		return;
	}

	if (trim(theForm.bcity.value)==""){ 
		alert("Please enter your CITY!");
		return;
	}

	if (trim(theForm.bstate.value)==""){ 
		alert("Please enter your STATE!");
		return;
	}

	if (trim(theForm.bzip.value)==""){ 
		alert("Please enter your ZIP CODE!");
		return;
	}
	
     // Check for correct zip code
     reZip = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);

     if (!reZip.test(trim(theForm.bzip.value))) {
          alert("Please enter a valid ZIP Code!");
          return;
     }
	
	if (trim(theForm.phone.value)==""){ 
		alert("Please enter your PHONE NUMBER!");
		return;
	}
	
	if(!ValidateNo(trim(theForm.phone.value),"1234567890-"))    
	{        alert("Please Enter your PHONE NUMBER in the format: nnn-nnn-nnnn!");        
		return;
	}
	
	if (trim(theForm.emailaddress.value)==""){ 
		alert("Please enter your EMAIL ADDRESS!");
		return;
	}

	if (validateEmail(trim(theForm.emailaddress.value))==false){
		alert("Please enter a VALID EMAIL ADDRESS!");
		return;
	}
	
	if (trim(theForm.cctype.value)==""){ 
		alert("Please enter your CARD TYPE");
		return;
	}

	if (trim(theForm.cardnumber.value)==""){ 
		alert("Please enter your CARD NUMBER");
		return;
	}	
	
	if (trim(theForm.expmonth.value)==""){ 
		alert("Please enter your EXPIRATION MONTH");
		return;
	}
	
	if (trim(theForm.expyear.value)==""){ 
		alert("Please enter your EXPIRATION YEAR");
		return;
	}
	
	if (trim(theForm.cvm.value)==""){ 
		alert("Please enter your CARD VERIFICATION NUMBER");
		return;
	}
	
	if ((trim(theForm.cctype.value)=="A") && (trim(theForm.cvm.value).length!==4) && (!ValidateNo(trim(theForm.cvm.value),"1234567890"))){
		alert("AMERICAN EXPRESS CVN numbers are 4 digits!");
		return;
	}

	if ((trim(theForm.cctype.value)!=="A") && (trim(theForm.cvm.value).length!==3) && (!ValidateNo(trim(theForm.cvm.value),"1234567890"))){
		alert("VISA, MASTERCARD, and DISCOVER CVN numbers are 3 digits!");
		return;
	}
	

	if (!ValidateNo(trim(theForm.orderamt.value),"1234567890.")){ 
		alert("Please enter a VALID DOLLAR AMOUNT!");
		return;
	}

	
//----------------SHIPPING VALIDATION-------------------------
	if (trim(theForm.sname.value)==""){ 
		alert("Please enter the recipient NAME!");
		return;
	}

	if (trim(theForm.saddr1.value)==""){ 
		alert("Please enter the recipient ADDRESS!");
		return;
	}

	if (trim(theForm.scity.value)==""){ 
		alert("Please enter the recipient CITY!");
		return;
	}

	if (trim(theForm.sstate.value)==""){ 
		alert("Please enter the recipient STATE!");
		return;
	}

	if (trim(theForm.szip.value)==""){ 
		alert("Please enter the recipient ZIP CODE!");
		return;
	}
	
     // Check for correct zip code
     reZip = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);

     if (!reZip.test(trim(theForm.szip.value))) {
          alert("Please enter a valid ZIP Code!");
          return;
     }
	
	if (trim(theForm.sphone.value)==""){ 
		alert("Please enter the recipient PHONE NUMBER!");
		return;
	}
	
	if(!ValidateNo(trim(theForm.sphone.value),"1234567890-"))    
	{        alert("Please Enter the recipient PHONE NUMBER in the format: nnn-nnn-nnnn!");        
		return;
	}
	
	if (trim(theForm.semailaddress.value)==""){ 
		alert("Please enter the recipient EMAIL ADDRESS!");
		return;
	}

	if (validateEmail(trim(theForm.semailaddress.value))==false){
		alert("Please enter a VALID EMAIL ADDRESS!");
		return;
	}

	if (CheckCardNumber(theForm)) { 
		theForm.submit();
	}

}

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(form) {
	
var tmpyear;

if (form.expyear.value > 96)
tmpyear = "19" + form.expyear.value;
else if (form.expyear.value < 21)
tmpyear = "20" + form.expyear.value;
else {
alert("The Expiration Year is not valid.");
return;
}
tmpmonth = form.expmonth.options[form.expmonth.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;
}

if (form.cctype.options[form.cctype.selectedIndex].value=="A") {
	card = "AmExCard"
}
if (form.cctype.options[form.cctype.selectedIndex].value=="V") {
	card = "VisaCard"
}
if (form.cctype.options[form.cctype.selectedIndex].value=="M") {
	card = "MasterCard"
}
if (form.cctype.options[form.cctype.selectedIndex].value=="D") {
	card = "DiscoverCard"
}

var retval = eval(card + ".checkCardNumber(\"" + form.cardnumber.value +
"\", " + 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
// 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.");
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;
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.
\*************************************************************************/
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;
}