function stringTrim(strToTrim) {
	return(strToTrim.replace(/^\s+|\s+$/g, ''));
}

function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

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



function validOpt(formField,fieldLabel)
{
	var result = true;
	var checkvalue = formField.value;

	if (checkvalue == "1")
	{ checkvalue = "0"  }

	if (checkvalue == "0")
	{ checkvalue = "1"  }

	return result;
}



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

function inValidCharSet(str,charset)
{
	var result = true;

	// Note: doesn't use regular expressions to avoid early Mac browser bugs
	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0) {
			result = false;
			break;
		}
	
	return result;
}

function validEmail(formField,fieldLabel,required)
{
	var result = true;
	
	if (required && !validRequired(formField,fieldLabel))
		result = false;

    var emailStr = formField.value;

/* 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|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("Email 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 username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("This domain name contains invalid characters.");
return false;
   }
}

// See if "user" is valid 

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

// user is not valid

alert("The 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 email 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 address is missing a hostname!");
return false;
}

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


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

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		if (!allDigits(formField.value))
 		{
 			alert('Please enter a number for the "' + fieldLabel +'" field.');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


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

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		var num = parseInt(formField.value,10);
 		if (isNaN(num))
 		{
 			alert('Please enter a number for the "' + fieldLabel +'" field.');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}



function validState(formField, fieldLabel,required) 
{
	var result = true;
	if (required && !validRequired(formField,fieldLabel))
		result = false;
/*
	if (result)
	{
		var state = formField.value;
		if (state == "")
			result = false;
	}
	if (!result)
	{
		alert('Please select your state.');
		formField.focus();
	}
*/
   return result;
}


function validIndustry(formField, fieldLabel,required) 
{
	var result = true;
	if (required && !validRequired(formField,fieldLabel))
		result = false;

   return result;
}


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

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		 		
 		var len = formField.length; // should be three components
 		if (len > 15)
 		{
			result = false;
 		}

  		if (!result)
 		{
 			alert('Please enter a valid phone number for the  "' + fieldLabel +'" field.');
			formField.focus();		
		}
	} 
	
	return result;
}

function checkProductType(theForm) 
{
	var result = true;
	
	if (theForm.productType == "")
	{
		alert('Please select a product type.');
		theForm.productType.focus();
		result = false;
	}
	
	return result;
}



function validateForm1(theForm)
{
	// Customize these calls for your form
   
	// Start ------->
	if (!validRequired(theForm.name,"Name"))
		return false;

	if (!validEmail(theForm.email,"Email Address",true))
		return false;

	if (!validPhone(theForm.phone,"Phone Number",true))
	    return false;

	if (!validRequired(theForm.company,"Company"))
	{
		return false;
	}
	//if (!validNum(theForm.yearsexperience,"Years Experience",true))
	//	return false;
	// <--------- End
	
	return true;
}

function validateForm2(theForm) 
{
	if (!validRequired(theForm.first_name,"First Name"))
		return false;

	if (!validRequired(theForm.last_name,"Last Name"))
		return false;

	if (!validRequired(theForm.title,"Title"))
		return false;

	if (!validRequired(theForm.company,"Company"))
	return false;

	if (!validEmail(theForm.email,"Email Address",true))
		return false;

	if (!validPhone(theForm.phone,"Phone Number",true))
	    return false;
		
	if (theForm.emailOptOut2.checked != true){
		theForm.emailOptOut.value = "1";
}		
    if (!validState(theForm.state,"State",true))
		return false;
		
    if (!validIndustry(theForm.industry,"Industry",true))
		return false;
	
	if (!validOpt(theForm.emailOptOut,"Email Opt Out"))
    	return false;

	return true;

}


function validateForm4(theForm)
{
	// Customize these calls for your form
   
	// Start ------->
	if (!validRequired(theForm.first_name,"First Name"))
		return false;

	if (!validRequired(theForm.last_name,"Last Name"))
		return false;
		
	if (!validEmail(theForm.email,"Email Address",true))
		return false;

	if (!validPhone(theForm.phone,"Phone Number",true))
	    return false;

	return true;
}

function validateFormWebinar(theForm) 
{
	if (!validRequired(theForm.FirstName,"First Name"))
		return false;

	if (!validRequired(theForm.LastName,"Last Name"))
		return false;

	if (!validRequired(theForm.title,"Title"))
		return false;

	if (!validRequired(theForm.company,"Company"))
	return false;

	if (!validEmail(theForm.UserEmailAddress,"Email Address",true))
		return false;
		
	return true;

}

function validateFormWebinar2(theForm) 
{
	if (!validRequired(theForm.FirstName,"First Name"))
		return false;

	if (!validRequired(theForm.LastName,"Last Name"))
		return false;

	if (!validEmail(theForm.UserEmailAddress,"Email Address",true))
		return false;

	alert('Thank you. You will receive an email shortly with the requested file attached.')

	return true;
}

function validateFormSurvey(theForm) 
{
	if (!validRequired(theForm.FirstName,"First Name"))
		return false;

	if (!validRequired(theForm.LastName,"Last Name"))
		return false;

	if (!validRequired(theForm.title,"Title"))
		return false;

	if (!validRequired(theForm.company,"Company"))
	return false;

	if (!validEmail(theForm.email,"Email Address",true))
		return false;

	if (!validPhone(theForm.phone,"Phone Number",true))
	    return false;
		
	return true;

}