function verifyPhoneNo(phoneNo)
{
	var workPhone="";
	
	for (var x=0; x < phoneNo.value.length; x++)
	{
		if (isNaN(phoneNo.value.charAt(x)) == false)
			workPhone += phoneNo.value.charAt(x);
	}
			
	if (workPhone.length == 10)
		return true;
	else
		return false;
}

function formatPhoneNo(phoneNo)
{
	var workPhone="", newPhone="", x;
	
	for (x=0; x < phoneNo.value.length; x++)
	{
		if (isNaN(phoneNo.value.charAt(x)) == false)
			workPhone += phoneNo.value.charAt(x);
	}
	
	for (x=0; x < workPhone.value.length; x++)
	{
		if (x == 2 || x == 5)
			newPhone += "-" + workPhone.value.charAt(x);
		else
			newPhone += workPhone.value.charAt(x);
	}
	
	alert(newPhone);
	
	return newPhone;		
}

function validateCCno(ccNo)
{
	var validatedNo="";
	var cardNo;
			
	if (ccNo != "")
		cardNo = ccNo;
	else
		return false;
	
	for (var x=0; x < cardNo.length; x++) {
		// See if the character is a numeric character		
		if (isNaN(cardNo.charAt(x)) == false) {
			// See if the character is a space
			if (cardNo.charAt(x) != ' ')		
				validatedNo += cardNo.charAt(x); // Char was numeric and not a space
		}
	}
				
	if ((validatedNo.length < 15) || (validatedNo.length > 16))
		return false;
	else	
		return true;
}

function validateExpire(expMonth,expYear)
{		
	if (isNaN(expMonth) || isNaN(expYear))
		return false;
	
	var currDate = new Date();
	var expireDate = new Date(expYear, (expMonth - 1), 31);
	
	if (expireDate <= currDate)
		return false;
	else
		return true;
}

function verifyChecked(chkbox)
{
	// This function checks to see if any of the check boxes in 'chkbox' are 
	// checked.. if so, it returns true otherwise it will return false	
	if (!chkbox.length) {
		// this is for a single checkbox
		if (chkbox.checked)
			return true;
	}
	else {	
		for (var x=0; x < chkbox.length; x++)
		{
			if (chkbox[x].checked == true)
				return true;
		}
	}
	
	return false;
}

function uncheckAll(chkbox)
{
	if (!chkbox.length)
		chkbox.checked = false;
	else {
		for (var x=0; x < chkbox.length; x++)
			chkbox[x].checked = false;
	}
	return;
}

function checkAll(chkbox)
{
	if (!chkbox.length)
		chkbox.checked = true;
	else {	
		for (var x=0; x < chkbox.length; x++)
			chkbox[x].checked = true;
	}
	return;
}

function putFocus(frmName, element)
{
	// simply set the focus to document.frmName.elements[element]
	frmName.elements[element].focus();
	return;
}

function fieldLen(inField, minLength)
{
	var fieldName;
	
	if ((String(inField.value).length) < minLength) {
		if (inField.id != "")
			alert("Field: " + inField.id + " must be at least " + minLength + " characters long.");
		else
			alert("This field must be at least " + minLength + " characters long.");
			
		inField.focus();		
		return false;
	}
	else
		return true;
}

function chkFields(frmName, allowed, chkMode, fieldList) {
	/*
	this function only allows the characters that are listed in the variable
	'alphaNumeric'. 
	the 'allowed' value will decide what characters are allowed
	0 - allow any characters
	1 - allow alphanumeric only
	2 - allow alphanumeric plus @ . -		
	
	skip can contain a comma delimited string indicating which form fields to
	skip or ignore. 
	*/

	var i, j, k, x;
	var tmpvalue, allOk=true, skip, chr;
	var alphaNumeric = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";	
			
	if (allowed == 2)
		alphaNumeric += " .-@_#',^()&";
		
	if (fieldList > "")
		fieldList = fieldList.split(",");
		
	for (i=0; i < frmName.length; i++) {		
		skip = false;		
		for (x in fieldList) {
			if (chkMode == 0) {
				// we want to ignore the fields listed in fieldList
				if (i == fieldList[x]) {
					skip = true;
					break;
				}
			}	
			else if (chkMode == 1) {				
				// we want to check the fields list in fieldList				
				if (i == fieldList[x]) {
					skip = false;
					break;
				}
				else
					skip = true;				
			}			
		}		
		
		if (skip == false) {
			tmpvalue = frmName.elements[i].value;		
			if ((frmName.elements[i].type == "text" || frmName.elements[i].type == "password") && frmName.elements[i].readOnly == false) {						
				for (j=0; j < tmpvalue.length; j++) {
					if (allowed == 0)
						break;
					
					chr = tmpvalue.charAt(j);
					for (k=0; k < alphaNumeric.length; k++) {
						if (chr == alphaNumeric.charAt(k))
							break;					

						if (k == (alphaNumeric.length  - 1)) {	
							allOk = false;
							break;
						}
					}
				}
				if (!allOk) {					
					if (frmName.elements[i].id != "")
						alert("Field: " + frmName.elements[i].id + " contains invalid characters.");
					else
						alert("This field contains invalid characters.");
						
					frmName.elements[i].focus();
					return false;
				}	
			}		
				
			if (tmpvalue == "") {
				if (frmName.elements[i].id != "")
					alert("Field: " + frmName.elements[i].id + " requires a selection or can not be blank.");
				else
					alert("This field requires a selection or can not be blank.");				
				
				frmName.elements[i].focus();
				return false;
			}
		}
	}
	return true;		
}

function emailCheck(emailStr) {

/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */

var checkTLD=1;

/* The following is the list of known TLDs that an e-mail address must end with. */

var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

/* 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("E-mail address seems incorrect (check @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

// Start by checking that only basic ASCII characters are in the strings (0-127).

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("This e-mail username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

alert("The e-mail username doesn't seem to be valid.");
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("Destination IP address is invalid!");
return false;
   }
}
return true;
}

// Domain is symbolic name.  Check if it's valid.
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
alert("The domain name does not seem to be valid.");
return false;
   }
}

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

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
alert("This e-mail address is missing a hostname!");
return false;
}

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