/*
This is a library of functions that can validate:
Dates
Email
Zipcode
Integers
SSN's
TaxID's
PhoneNumber

Also formating of fields onChange:
TrimWhitespace
Zipcode
SSN
TaxID
Phonenumber

*/


/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

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 stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}

function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	alert("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The email address username doesn't seem to be valid. Please Check.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("The email destination IP address is invalid! Please Check.")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain of your email address name doesn't seem to be valid. Please check your email address before continuing.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The email address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This email address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}


/**
 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters;
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

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 stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length == minDigitsInIPhoneNumber);
}

function SSNValidation(ssn) {
var matchArr = ssn.match(/^(\d{3})-?\d{2}-?\d{4}$/);
var numDashes = ssn.split('-').length - 1;
	if (matchArr == null || numDashes == 1) {
		alert('Invalid SSN. Must be 9 digits in the ###-##-#### format.');
		msg = "does not appear to be valid";
		return false;
	}
	else 
		if (parseInt(matchArr[1],10)==0) {
			alert("Invalid SSN: SSN's can't start with 000.");
			msg = "does not appear to be valid";
			return false;
		}
		else {
	   }
}

function validateZIP(field) {
var valid = "0123456789-";
var hyphencount = 0;

	if (field.length!=5 && field.length!=10) {
		alert("Please enter 5 digit or 5 digit+4 zip code.");
		return false;
	}
	for (var i=0; i < field.length; i++) {
	temp = "" + field.substring(i, i+1);
		if (temp == "-") hyphencount++;
		if (valid.indexOf(temp) == "-1") {
			alert("Invalid characters in zip code. Please try again.");
			return false;
		}
		if ((hyphencount > 1) || ((field.length==10) && ""+field.charAt(5)!="-")) {
			alert("The hyphen character should be used with a properly formatted 5 digit+four zip code, like '12345-6789'. Please try again.");
			return false;
	   }
	}
}

//Used onload to set elements for onblur formating
function InitPage()
{
        ME=document.forms[0];
        ME.elements[0].focus();
} 



//New validate SSN or TaxID function
function ValSSN(ctl, num, desc, fReq )
{
        rTxt = "";
        if( eval(ctl) )
        {
          ssn = GetNumbers(ctl.value);
          if( ssn == "" )
          {
            if (fReq)
              rTxt = desc + " is blank";
          }
          else
          {
            if( !IsNumStr(ssn) )
                rTxt = desc + " has invalid characters.";
            else if(ssn.length != num)
                rTxt = desc + " must be " + num + " digits long.";
          }
        }

        if (rTxt!="")
          rTxt = A1+(ctl.name)+Foc + rTxt + A2;
}

//Need this for new functiona
function IsNumStr(s)
{
        return !s.match(/\D/);
}

//Check to see if it is a white space for the trimwhitespace
function IsWhiteSpace( c )
{
        return( (' ' == c) || ('\t' == c) || ('\n' == c) );
}

// This function trims whitespace from the beginning and end of a string.
function trimwhitespace( Ctrl )
{
        var index;
        var end;
        var result = Ctrl.value;

        if( result.length == 0 )
                return;

        // Trim the rightside
        index = result.length-1;
        while( index >= 0 )
        {
                // If it's not whitespace we're done
                if( IsWhiteSpace(result.charAt(index)) )
                        index -= 1;
                else
                        break;
        }

        end = index+1;
        index = 0;

        if( end > 0 )
        {
                // Trim the left side
                while( index < result.length )
                {
                        // If it's not whitespace we're done
                        if( IsWhiteSpace(result.charAt(index)) )
                                index += 1;
                        else
                        break;
                }
        }

        Ctrl.value = result.substring( index, end );
}

//Gets all the numbers out of a field to do formatting
function GetNumbers(dt)
{
        numbers = dt.replace( /[^0-9]/g, "" );
        return numbers;
}

//Formats SSN onblur
function FormatSSN(Ctrl)
{
        trimwhitespace( Ctrl );
        var SSN = GetNumbers( Ctrl.value );
        Ctrl.value = "";

        // Keep us from going too far...
        if( SSN.length > 9 )
                SSN = SSN.substring(0, 9);

        if( SSN.length >= 3 )
        {
                Ctrl.value = SSN.substring(0,3) + "-";
                SSN = SSN.substring(3, SSN.length);

                if( SSN.length >= 2 )
                        Ctrl.value += SSN.substring(0,2) + "-";
                SSN = SSN.substring(2, SSN.length);
        }

        Ctrl.value += SSN;
}


function CheckEmail(Ctrl){
	var email = Ctrl.value
	if (email.indexOf("@")<2)
		{
		alert("Please make sure you have typed your email address correctly. Please check the prefix and the '@' sign.");
		return false;
		}
	//var At 
	//var SubAt
	//var LenEmail
	//At = (email.indexOf("@")+2);
	//LenEmail = email.length;
	//SubAt = email.substring(At,LenEmail);
	//if (!(SubAt.indexOf(".")>=0))
		//{
		//alert("Please make sure you have typed your email address correctly. Please check the suffix and the '.' sign.");
		//return false;
		//}
	var temp
	//Check for blank charaters
	for (var i=0; i < email.length; i++) {
	temp = "" + email.substring(i, i+1);
	 if( IsWhiteSpace(temp) )
              {
		   alert("Please make sure you have typed your email address correctly. Remove all blank characters.");
			return false;
		   }       
	}
}

function FormatPhoneNumber(Ctrl)
{
        trimwhitespace( Ctrl );
        var PhoneNumber = GetNumbers( Ctrl.value );
        Ctrl.value = "";

        // Keep us from going too far...
        if( PhoneNumber.length > 10 )
                PhoneNumber = PhoneNumber.substring(0, 10);

        if( PhoneNumber.length >= 3 )
        {
                Ctrl.value = PhoneNumber.substring(0,3) + "-";
                PhoneNumber = PhoneNumber.substring(3, PhoneNumber.length);

                if( PhoneNumber.length >= 3 )
                        Ctrl.value += PhoneNumber.substring(0,3) + "-";
                PhoneNumber = PhoneNumber.substring(3, PhoneNumber.length);
        }

        Ctrl.value += PhoneNumber;
}

function FormatZip(Ctrl)
{
        trimwhitespace( Ctrl );
        var Zip = GetNumbers( Ctrl.value );
        Ctrl.value = "";

        // Keep us from going too far...
        if( Zip.length > 9 )
                Zip = Zip.substring(0, 9);

        if( Zip.length >= 6 )
        {
                Ctrl.value = Zip.substring(0,5) + "-";
                Zip = Zip.substring(5, Zip.length);
        }

        Ctrl.value += Zip;
}


//Formats Federal Tax ID onblur
function FormatTaxID(Ctrl)
{
        trimwhitespace( Ctrl );
        var SSN = GetNumbers( Ctrl.value );
        Ctrl.value = "";

        // Keep us from going too far...
        if( SSN.length > 9 )
                SSN = SSN.substring(0, 9);

        if( SSN.length >= 2 )
        {
                Ctrl.value = SSN.substring(0,2) + "-";
                SSN = SSN.substring(2, SSN.length);
        }

        Ctrl.value += SSN;
}



//Need this global so it can be closed by closeDep()
var win

var isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;
var Emac = ((document.all)&&(isMac)) ? true : false;


//centered popup
function NewWindow(mypage, myname, w, h, scroll) {
	if (!isMac && !Emac){
		closeDep()
	}
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable=no'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

//top left popup
function popUp(mypage, myname, w, h, scroll){
	if (!isMac && !Emac){
		closeDep()
	}
	winprops = 'height='+h+',width='+w+',top=50,left=50,scrollbars='+scroll+',resizable'
    win = window.open(mypage, myname, winprops);
} 

//Close popup
function closeDep(){
	if (!isMac && !Emac){
		if (win && win.open && !win.closed) win.close();
	}
	
}


function validRequired(formField,fieldLabel)
{
	var result = true;
	
	if (formField.value == "")
	{
		alert('Please enter a value for the "' + fieldLabel +'" field.');
		formField.focus();
		result = false;
	}
	
	return result;
}


function allDigits(str)
{
	return inValidCharSet(str,"0123456789");
}

function inValidCharSet(str,charset)
{
	var result = true;
	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			result = false;
			break;
		}
	
	return result;
}

function isValidExpDate(formField,fieldLabel,required)
{
	var result = true;
	var formValue = formField;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result && (formField.length>0))
 	{
 		var elems = formValue.split("/");
 		
 		result = (elems.length == 2); // should be two components
 		var expired = false;
 		
 		if (result)
 		{
 			var month = parseInt(elems[0],10);
 			var year = parseInt(elems[1],10);
 			
 			if (elems[1].length == 2)
 				year += 2000;
 			
 			var now = new Date();
 			
 			var nowMonth = now.getMonth() + 1;
 			var nowYear = now.getFullYear();
 			
 			expired = (nowYear > year) || ((nowYear == year ) && (nowMonth > month));
 			
			result = allDigits(elems[0]) && (month > 0) && (month < 13) &&
					 allDigits(elems[1]) && ((elems[1].length == 2) || (elems[1].length == 4));
 		}
 		
  		if (!result)
 		{
 			alert('Please enter a date in the format MM/YY for the "' + fieldLabel +'" field.');
			
		}
		else if (expired)
		{
 			result = false;
 			alert('The date for "' + fieldLabel +'" has expired.');
			
		}
	} 
	
	return result;
}

function isValidCreditCardNumber(formField,ccType,fieldLabel,required)
{
	var result = true;
 	var ccNum = formField.value;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
 
  	if (result && (formField.value.length>0))
 	{ 
 		if (!allDigits(ccNum))
 		{
 			alert('Please enter only numbers (no dashes or spaces) for the "' + fieldLabel +'" field.');
			formField.focus();
			result = false;
		}	

		if (result)
 		{ 
 			
 			if (!LuhnCheck(ccNum) || !validateCCNum(ccType,ccNum))
 			{
 				alert('Please enter a valid card number for the "' + fieldLabel +'" field.');
				formField.focus();
				result = false;
			}	
		} 

	} 
	
	return result;
}

function LuhnCheck(str) 
{
  var result = true;

  var sum = 0; 
  var mul = 1; 
  var strLen = str.length;
  
  for (i = 0; i < strLen; i++) 
  {
    var digit = str.substring(strLen-i-1,strLen-i);
    var tproduct = parseInt(digit ,10)*mul;
    if (tproduct >= 10)
      sum += (tproduct % 10) + 1;
    else
      sum += tproduct;
    if (mul == 1)
      mul++;
    else
      mul--;
  }
  if ((sum % 10) != 0)
    result = false;
    
  return result;
}



function GetRadioValue(rArray)
{
	for (var i=0;i<rArray.length;i++)
	{
		if (rArray[i].checked)
			return rArray[i].value;
	}
	
	return null;
}


function validateCCNum(cardType,cardNum)
{
	var result = false;
	cardType = cardType.toUpperCase();
	
	var cardLen = cardNum.length;
	var firstdig = cardNum.substring(0,1);
	var seconddig = cardNum.substring(1,2);
	var first4digs = cardNum.substring(0,4);

	switch (cardType)
	{
		case "VISA":
			result = ((cardLen == 16) || (cardLen == 13)) && (firstdig == "4");
			break;
		case "AMEX":
			var validNums = "47";
			result = (cardLen == 15) && (firstdig == "3") && (validNums.indexOf(seconddig)>=0);
			break;
		case "MC":
			var validNums = "12345";
			result = (cardLen == 16) && (firstdig == "5") && (validNums.indexOf(seconddig)>=0);
			break;
		case "DISC":
			result = (cardLen == 16) && (first4digs == "6011");
			break;
		case "DINERS":
			var validNums = "068";
			result = (cardLen == 14) && (firstdig == "3") && (validNums.indexOf(seconddig)>=0);
			break;
	}
	return result;
}

function CheckCard(Name,CardType,CardNumber,expmonth,expyear,cvv){
	if(Name.value==""){
		alert("You must enter credit card name.");
		Name.focus();
		return false;
	}
	if(CardType.value==""){
		alert("You must select a credit card type.");
		CardType.focus();
		return false;
	}
	if(CardNumber.value==""){
		alert("You must enter a credit card number.");
		CardNumber.focus();
		return false;
	}
	if (!isValidCreditCardNumber(CardNumber,CardType.value,"Credit Card Number",true)){
		CardNumber.focus()
		return false;
	}
	if(expmonth.value==""){
		alert("You must select a credit card expiration month.");
		expmonth.focus();
		return false;
	}
	if(expyear.value==""){
		alert("You must select a credit card expiration year.");
		expyear.focus();
		return false;
	}
	//create MM/YY string from 2 drop down date fields
	var ExpDate = expmonth.value+"/"+expyear.value;
	if (!isValidExpDate(ExpDate,"Card Expiration",true)){
		expmonth.focus()
		return false;
	}
	
	
	var SecurityLength;
	
	if(CardType.value.toUpperCase() != "AMEX"){
		SecurityLength = 3;
	}else{
		SecurityLength = 4;
	}
	
	if(cvv.value == ""){
		alert("You must enter the credit card "+SecurityLength+" digit security code other wise known as the CID. ");
		cvv.focus();
		return false;
	}
	
	if(!isInteger(cvv.value)){
		alert("You can only enter digits for your card security code or CID.");
		cvv.value = "";
		cvv.focus();
		return false;
	}
	
	if(cvv.value.length != SecurityLength){
		alert("Your card security code or CID must be "+SecurityLength+" digits long.");
		cvv.focus();
		return false;
	}
	
	return true;
}

function formatCurrency(num) {
	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num))
	num = "0";
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	if(cents<10)
	cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	return (((sign)?'':'-') + '$' + num + '.' + cents);
}

function ValidateDecimal(num,field){
	nv=/^\s*\d+\.?\d{0,2}\s*$/; //Reg Exp for money decimal format
	if (!num.match(nv)){
		alert("You can only enter "+field+" in number formats i.e. 7.0 or 7");
		return false;
	}
	return true;
}

//This is a credit card mod 10 validator that does not require card type
function checkCC(s) {

  var i, n, c, r, t;

  // First, reverse the string and remove any non-numeric characters.

  r = "";
  for (i = 0; i < s.length; i++) {
    c = parseInt(s.charAt(i), 10);
    if (c >= 0 && c <= 9)
      r = c + r;
  }

  // Check for a bad string.

  if (r.length <= 1)
    return false;

  // Now run through each single digit to create a new string. Even digits
  // are multiplied by two, odd digits are left alone.

  t = "";
  for (i = 0; i < r.length; i++) {
    c = parseInt(r.charAt(i), 10);
    if (i % 2 != 0)
      c *= 2;
    t = t + c;
  }

  // Finally, add up all the single digits in this string.

  n = 0;
  for (i = 0; i < t.length; i++) {
    c = parseInt(t.charAt(i), 10);
    n = n + c;
  }

  // If the resulting sum is an even multiple of ten (but not zero), the
  // card number is good.

  if (n != 0 && n % 10 == 0)
    return true;
  else
    return false;
}