/** Intuit Front JS **/

var ccErrorNo = 0;
var ccErrors = new Array ()

ccErrors [0] = "Unknown card type";
ccErrors [1] = "No card number provided";
ccErrors [2] = "Credit card number is in invalid format";
ccErrors [3] = "Credit card number is invalid";
ccErrors [4] = "Credit card number has an inappropriate number of digits";

function checkCreditCard (cardnumber, cardname) {
     
  // Array to hold the permitted card characteristics
  var cards = new Array();

  // Define the cards we support. You may add addtional card types.
  
  //  Name:      As in the selection box of the form - must be same as user's
  //  Length:    List of possible valid lengths of the card number for the card
  //  prefixes:  List of possible prefixes for the card
  //  checkdigit Boolean to say whether there is a check digit
  
  cards [0] = {name: "Visa", 
               length: "13,16", 
               prefixes: "4",
               checkdigit: true};
  cards [1] = {name: "MasterCard", 
               length: "16", 
               prefixes: "51,52,53,54,55",
               checkdigit: true};
  cards [2] = {name: "DinersClub", 
               length: "14,16", 
               prefixes: "36,54,55",
               checkdigit: true};
  cards [3] = {name: "CarteBlanche", 
               length: "14", 
               prefixes: "300,301,302,303,304,305",
               checkdigit: true};
  cards [4] = {name: "AmEx", 
               length: "15", 
               prefixes: "34,37",
               checkdigit: true};
  cards [5] = {name: "Discover", 
               length: "16", 
               prefixes: "6011,622,64,65",
               checkdigit: true};
  cards [6] = {name: "JCB", 
               length: "16", 
               prefixes: "35",
               checkdigit: true};
  cards [7] = {name: "enRoute", 
               length: "15", 
               prefixes: "2014,2149",
               checkdigit: true};
  cards [8] = {name: "Solo", 
               length: "16,18,19", 
               prefixes: "6334, 6767",
               checkdigit: true};
  cards [9] = {name: "Switch", 
               length: "16,18,19", 
               prefixes: "4903,4905,4911,4936,564182,633110,6333,6759",
               checkdigit: true};
  cards [10] = {name: "Maestro", 
               length: "12,13,14,15,16,18,19", 
               prefixes: "5018,5020,5038,6304,6759,6761",
               checkdigit: true};
  cards [11] = {name: "VisaElectron", 
               length: "16", 
               prefixes: "417500,4917,4913,4508,4844",
               checkdigit: true};
               
  // Establish card type
  var cardType = -1;
  for (var i=0; i<cards.length; i++) {

    // See if it is this card (ignoring the case of the string)
    if (cardname.toLowerCase () == cards[i].name.toLowerCase()) {
      cardType = i;
      break;
    }
  }
  
  // If card type not found, report an error
  if (cardType == -1) {
     ccErrorNo = 0;
     return false; 
  }
   
  // Ensure that the user has provided a credit card number
  if (cardnumber.length == 0)  {
     ccErrorNo = 1;
     return false; 
  }
    
  // Now remove any spaces from the credit card number
  cardnumber = cardnumber.replace (/\s/g, "");
  
  // Check that the number is numeric
  var cardNo = cardnumber
  var cardexp = /^[0-9]{13,19}$/;
  if (!cardexp.exec(cardNo))  {
     ccErrorNo = 2;
     return false; 
  }
       
  // Now check the modulus 10 check digit - if required
  if (cards[cardType].checkdigit) {
    var checksum = 0;                                  // running checksum total
    var mychar = "";                                   // next char to process
    var j = 1;                                         // takes value of 1 or 2
  
    // Process each digit one by one starting at the right
    var calc;
    for (i = cardNo.length - 1; i >= 0; i--) {
    
      // Extract the next digit and multiply by 1 or 2 on alternative digits.
      calc = Number(cardNo.charAt(i)) * j;
    
      // If the result is in two digits add 1 to the checksum total
      if (calc > 9) {
        checksum = checksum + 1;
        calc = calc - 10;
      }
    
      // Add the units element to the checksum total
      checksum = checksum + calc;
    
      // Switch the value of j
      if (j ==1) {j = 2} else {j = 1};
    } 
  
    // All done - if checksum is divisible by 10, it is a valid modulus 10.
    // If not, report an error.
    if (checksum % 10 != 0)  {
     ccErrorNo = 3;
     return false; 
    }
  }  

  // The following are the card-specific checks we undertake.
  var LengthValid = false;
  var PrefixValid = false; 
  var undefined; 

  // We use these for holding the valid lengths and prefixes of a card type
  var prefix = new Array ();
  var lengths = new Array ();
    
  // Load an array with the valid prefixes for this card
  prefix = cards[cardType].prefixes.split(",");
      
  // Now see if any of them match what we have in the card number
  for (i=0; i<prefix.length; i++) {
    var exp = new RegExp ("^" + prefix[i]);
    if (exp.test (cardNo)) PrefixValid = true;
  }
      
  // If it isn't a valid prefix there's no point at looking at the length
  if (!PrefixValid) {
     ccErrorNo = 3;
     return false; 
  }
    
  // See if the length is valid for this card
  lengths = cards[cardType].length.split(",");
  for (j=0; j<lengths.length; j++) {
    if (cardNo.length == lengths[j]) LengthValid = true;
  }
  
  // See if all is OK by seeing if the length was valid. We only check the 
  // length if all else was hunky dory.
  if (!LengthValid) {
     ccErrorNo = 4;
     return false; 
  };   
  
  // The credit card is in the required format.
  return true;
}

var testresults
function checkemail(email)
{
	var str=email;
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	
	if(filter.test(str))
		testresults=true;
	else
		testresults=false;
	
	return(testresults);
}
function validateCC()
{
	var ccNum = document.getElementById("ccnumber").value;
	var ccType = document.getElementById("cardtype").value;
	
	if(ccType == 'visa') 
		ccType = 'Visa';
	else if(ccType == 'mc')	
		ccType = 'MasterCard';
	else if(ccType == 'diners')	
		ccType = 'DinersClub';
	else if(ccType == 'amex')	
		ccType = 'AmEx';
	else if(ccType == 'discover')	
		ccType = 'Discover';			
	else if(ccType == 'jcb')
		ccType = 'JCB';

	if(checkCreditCard (ccNum, ccType))
		return true;		
	
	return false;

}

function isInteger(s)
{   var i;
	for (i = 0; i < s.length; i++)
	{   
		// Check that current character is number.
		var c = s.charAt(i);
		if (((c < "0") || (c > "9"))) return false;
	}
	// All characters are numbers.
	return true;
}
function checkfrmvalidation()
{
	if(document.getElementById('ccname').value == '')
	{
		alert("Please enter your Credit Card Name.");
		document.getElementById('ccname').focus();
		return false;
	}
	
	if(document.getElementById('ccnumber').value == '')
	{
		alert("Please enter your Credit Card number.");
		document.getElementById('ccnumber').focus();
		return false;
	}
	
	if(!validateCC())
	{
		alert("Please enter a valid Credit Card number.");
		document.getElementById('ccnumber').focus();
		return false;
	}
	
	/*if(!isInteger(document.getElementById('credit_card_num').value))
	{
		alert("Please enter your valid credit card number.");
		document.getElementById('credit_card_num').value = '';
		document.getElementById('credit_card_num').focus();
		return false;
	}*/
	
	if(document.getElementById('ccidentifier1').value == '')
	{
		alert("Please enter of your Credit Card Security Code.");
		document.getElementById('ccidentifier1').focus();
		return false;
	}
	
	if(!isInteger(document.getElementById('ccidentifier1').value))
	{
		alert("Credit Card Security Code must be numeric.");
		document.getElementById('ccidentifier1').value = '';
		document.getElementById('ccidentifier1').focus();
		return false;
	}
	
	if(document.getElementById('month').value == '')
	{
		alert("Please enter 2 digit expiration month on your card.");
		document.getElementById('month').focus();
		return false;
	}						
	
	if(document.getElementById('year').value == '')
	{
		alert("Please enter 2 or 4 digit expiration year on your card.");
		document.getElementById('year').focus();
		return false;
	}
	
	if(document.getElementById('ccname').value == '')
	{
		alert("Please enter credit card Owner Name.");
		document.getElementById('ccname').focus();
		return false;
	}
	
	if(document.getElementById('fulltotal').value == '')
	{
		alert("Please enter Total Amount that you want to pay.");
		document.getElementById('fulltotal').focus();
		return false;
	}
	
	if(document.getElementById('email').value == '')
	{
		alert("Please enter your Billing Email address.");
		document.getElementById('email').focus();
		return false;
	}
	
	if(!checkemail(document.getElementById('email').value))
	{
		alert("Please enter a valid Billing Email address.");
		document.getElementById('email').focus();
		return false;
	}								
	
	return true;
}

function changeCardImg(card)
{
	var intuit_ccimgDIV = document.getElementById('intuit_ccimg');
	var ccimg = card + ".gif";
	
	intuit_ccimgDIV.innerHTML = '<img src="../images/'+ccimg+'" border="0" style="margin:0; padding:0; display:inline;" />';
}

/** Intuit Admin JS **/

function toggleAdvDiv(id, tdObj)
{
	var targetDiv = document.getElementById(id);
	
	if(targetDiv.style.display == 'block')
	{
		targetDiv.style.display = 'none';
		tdObj.innerHTML = '<span style="font-family:Verdana; font-size:14px;">+</span> Advanced Parameters';
	}
	else
	{
		if(!confirm("Provided for advanced users. Do not change these values unless you know what you're doing! Are you sure you want to proceed ?"))
			return;
		
		targetDiv.style.display = 'block';
		tdObj.innerHTML = '<span style="font-family:Verdana; font-size:14px;">-</span> Advanced Parameters';
	}
	
}