// 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 isFormattedPhoneNumber(phoneString) //needs this format: 555-555-5555
{
	var i;
	if (phoneString.length > 12) return false;
  for (i = 0; i < phoneString.length; i++)
  {
  	// Check that character is what it's supposed to be
  	var c = phoneString.charAt(i);
  	if ((i != 3 && i != 7) && (((c < "0") || (c > "9")))) return false;
  	if ((i == 3 || i == 7) && (c != "-")) return false;
   }
   return true;
}	

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);
t=isFormattedPhoneNumber(strPhone);
if (t==false) return t;
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function ValidatePhoneNumber(id){
	var element = document.getElementById(id);
  var Phone = element.value;
	
	if (checkInternationalPhone(Phone)==false){
		//alert("Please Enter a Valid Phone Number")
		//Phone.value=""
		//Phone.focus()
		return false
	}
	return true
 }


function SSNValidation(id) {
	var element = document.getElementById(id);
  var ssn = element.value;
/* //use if 555555555 is allowed
	var matchArr = ssn.match(/^(\d{3})-?\d{2}-?\d{4}$/);
	var numDashes = ssn.split('-').length - 1;
	if (matchArr == null || numDashes == 1) {
*/
	var matchArr = ssn.match(/^(\d{3})-\d{2}-\d{4}$/);
	if (matchArr == null) {

		return false;
		//alert('Invalid SSN. Must be 9 digits or in the form NNN-NN-NNNN.');
		//msg = "does not appear to be valid";
	}
	else 
	if (parseInt(matchArr[1],10)==0) {
		return false;
		//alert("Invalid SSN: SSN's can't start with 000.");
		//msg = "does not appear to be valid";
	}
	else
	{
		return true;
		//msg = "appears to be valid";
		//alert(ssn + "\r\n\r\n" + msg + " Social Security Number.");
  }
}

function notEmpty(id)
{
    var element = document.getElementById(id);
    var eValue = element.value;
    if(eValue.length == 0) return false;
    else return true;
}

function isNumeric(id)
{
   var element = document.getElementById(id).value;
   var eLength = element.length;
   var i;
    for (i = 0; i < eLength; i++)
    {   
        // Check that current character is number.
        var c = element.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function exactLength(id,reqlength)
{
   var element = document.getElementById(id).value;
   var eLength = element.length;
   if (eLength != reqlength) return false;
   else return true;

}

function maxLength(id,reqlength)
{
   var element = document.getElementById(id).value;
   var eLength = element.length;
   if (eLength > reqlength) return false;
   else return true;

}

function validEmail(id)
{
    var element = document.getElementById(id);
    var eValue = element.value;
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (filter.test(eValue)) return true;
		else return false;
}

function notChecked(id)
{
    var element = document.getElementById(id);
    var eValue = element.checked;
    if(eValue == false) return false;
    else return true;
}