function formCheck(mode, description)
{ 
var broadband = document.getElementById('broadband_dnp')
var prod_showcase = document.getElementById('prod_showcase_dnp')
var whitepapers = document.getElementById('whitepapers_dnp')


	if(document.qualform.RECEIVE_YES_NO[0].checked == false && document.qualform.RECEIVE_YES_NO[1].checked == false)
	{
	alert("Please specify whether you wish to receive " + description +"?");
        document.qualform.RECEIVE_YES_NO[0].focus();
		return false;
	}

	if(document.qualform.RECEIVE_YES_NO[1].checked == true)
	// stop validation when "not to receive" response
	{
		return true;
	}
		
	if ((mode == "SHORT") || (mode == "ABBR"))
	{
		if (document.qualform.EMAIL_ADDRESS.value == "")
		 {
			alert("Please specify your E-mail Address.");
       			document.qualform.EMAIL_ADDRESS.focus();
			return false;
		 }
		if ((document.qualform.EMAIL_ADDRESS.value != "") && (!validEmail(document.qualform.EMAIL_ADDRESS.value)))
		       {
			alert("You have entered an invalid email address. Please re-enter it.");
			document.qualform.EMAIL_ADDRESS.focus();
			return false;
			}
		
			if (document.qualform.EMAIL_ADDRESS2.value == "") 
			{
				alert("Please confirm your email address.");
				document.qualform.EMAIL_ADDRESS2.focus();
				return false;
			}   
			if(document.qualform.EMAIL_ADDRESS.value.toUpperCase() != document.qualform.EMAIL_ADDRESS2.value.toUpperCase())
			{
				alert("Confirmation email address does not match email address.");
		        	document.qualform.EMAIL_ADDRESS.focus();
				return false;
			}
	 	
			    
		if (CheckedRadioValue(document.qualform.REQUESTED_VERSION)=="P")
		{
             if (document.qualform.GEOSTATE.value == "53")
			{
				alert("Free Print Edition subscriptions are only available for addresses in the US or Canada.");
		        	document.qualform.REQUESTED_VERSION[0].focus();
				return false;
			}
		}

		if (!CheckDemos(document.qualform))
		{
			return false;
		}	

		return true;
	}

	if (mode == "ADD")
	{
		if(document.qualform.FNAME.value == "")
		{
			alert("Please specify your First name.");
        		document.qualform.FNAME.focus();
			return false;
		}
		if(document.qualform.LNAME.value == "")
		{
			alert("Please specify your Last name.");
        		document.qualform.LNAME.focus();
			return false;
		}
	}
	if (mode != "RENEW")
	{
		if(document.qualform.TITLE.value == "")
		{
			alert("Please specify your Title.");
	        document.qualform.TITLE.focus();
			return false;
		}
		if(document.qualform.COMPANY.value == "")
		{
			alert("Please specify your Company name.");
        		document.qualform.COMPANY.focus();
			return false;
		}
		if(document.qualform.ADDRESS2.value == "")
		{
			alert("Please specify your Street Address.");
	        	document.qualform.ADDRESS2.focus();
			return false;
		}
		if(document.qualform.CITY.value == "")
		{
			alert("Please specify your City.");
	        	document.qualform.CITY.focus();
			return false;
		}
		if (document.qualform.STATE.selectedIndex == 0)
		{
			alert("Please specify your State/Province.");
		        document.qualform.STATE.focus();
			return false;
		}

		// validate Canadian state/postal code combination
		if (!ValidCanPostal(document.qualform.STATE[document.qualform.STATE.selectedIndex].value,document.qualform.ZIPCODE.value))
		{
			alert ("Invalid Canadian province/postal code combination.");
        		document.qualform.STATE.focus();
			return false;
		}

		if (document.qualform.STATE[document.qualform.STATE.selectedIndex].value == "53")
		{
			if (document.qualform.COUNTRY.value == "")
			{
				alert("Please specify your Country.");
	        		document.qualform.COUNTRY.focus();
				return false;
			}
		}
		else
		{
			if (document.qualform.ZIPCODE.value.length < 5)
			{
				alert("Please specify your Zip/Postal Code.");
	        		document.qualform.ZIPCODE.focus();
				return false;
			}
		}
	}
	
	if (document.qualform.EMAIL_ADDRESS.value == "")
		{
			alert("Please specify your E-mail Address.");
       			document.qualform.EMAIL_ADDRESS.focus();
			return false;
		}
	if ((document.qualform.EMAIL_ADDRESS.value != "") && (!validEmail(document.qualform.EMAIL_ADDRESS.value)))
		      {
			alert("You have entered an invalid email address. Please re-enter it.");
			document.qualform.EMAIL_ADDRESS.focus();
			return false;
			}

		if (document.qualform.EMAIL_ADDRESS2.value == "") 
		{
			alert("Please confirm your email address.");
			document.qualform.EMAIL_ADDRESS2.focus();
			return false;
		}   
		if(document.qualform.EMAIL_ADDRESS.value.toUpperCase() != document.qualform.EMAIL_ADDRESS2.value.toUpperCase())
		{
			alert("Confirmation email address does not match email address.");
	        	document.qualform.EMAIL_ADDRESS.focus();
			return false;
		}
 	
     	
	if (!CheckDemos(document.qualform))
	{
		return false;
	}
	if ((mode == "RENEW") &&(CheckedRadioValue(document.qualform.REQUESTED_VERSION)=="P"))
	{
            if (document.qualform.GEOSTATE.value == "53")
			{
				alert("Free Print Edition subscriptions are only available for addresses in the US or Canada.");
	        	document.qualform.REQUESTED_VERSION[0].focus();
			return false;
		}
	}
	
 }  
function formCheckAlt(mode, description)
{ 
var broadband = document.getElementById('broadband_dnp')
var prod_showcase = document.getElementById('prod_showcase_dnp')
var whitepapers = document.getElementById('whitepapers_dnp')


	if(document.qualform.RECEIVE_YES_NO[0].checked == false && document.qualform.RECEIVE_YES_NO[1].checked == false)
	{
	alert("Please specify whether you wish to receive " + description +"?");
        document.qualform.RECEIVE_YES_NO[0].focus();
		return false;
	}
	if(document.qualform.RECEIVE_YES_NO[1].checked == true)
	// stop validation when "not to receive" response
	{
		return true;
	}


	if (mode == "ADD")
	{
		if(document.qualform.FNAME.value == "")
		{
			alert("Please specify your First name.");
        		document.qualform.FNAME.focus();
			return false;
		}
		if(document.qualform.LNAME.value == "")
		{
			alert("Please specify your Last name.");
        		document.qualform.LNAME.focus();
			return false;
		}
	}
	if (mode != "RENEW")
	{
		if(document.qualform.TITLE.value == "")
		{
			alert("Please specify your Title.");
	        document.qualform.TITLE.focus();
			return false;
		}
		if(document.qualform.COMPANY.value == "")
		{
			alert("Please specify your Company name.");
        		document.qualform.COMPANY.focus();
			return false;
		}
		if(document.qualform.ADDRESS2.value == "")
		{
			alert("Please specify your Street Address.");
	        	document.qualform.ADDRESS2.focus();
			return false;
		}
		if(document.qualform.CITY.value == "")
		{
			alert("Please specify your City.");
	        	document.qualform.CITY.focus();
			return false;
		}
		if (document.qualform.STATE.selectedIndex == 0)
		{
			alert("Please specify your State/Province.");
		        document.qualform.STATE.focus();
			return false;
		}

		// validate Canadian state/postal code combination
		if (!ValidCanPostal(document.qualform.STATE[document.qualform.STATE.selectedIndex].value,document.qualform.ZIPCODE.value))
		{
			alert ("Invalid Canadian province/postal code combination.");
        		document.qualform.STATE.focus();
			return false;
		}

		if (document.qualform.STATE[document.qualform.STATE.selectedIndex].value == "53")
		{
			if (document.qualform.COUNTRY.value == "")
			{
				alert("Please specify your Country.");
	        		document.qualform.COUNTRY.focus();
				return false;
			}
		}
		else
		{
			if (document.qualform.ZIPCODE.value.length < 5)
			{
				alert("Please specify your Zip/Postal Code.");
	        		document.qualform.ZIPCODE.focus();
				return false;
			}
		}


		if ((document.qualform.HOME_ADDRESS1.value != "")
			|| (document.qualform.HOME_ADDRESS2.value != "")
			|| (document.qualform.HOME_CITY.value != "")
			|| (document.qualform.HOME_ZIPCODE.value != "")
			|| (document.qualform.HOME_STATE.selectedIndex > 0))
		{
			if(document.qualform.HOME_ADDRESS2.value == "")
			{
				alert("Please specify your optional delivery Street Address.");
	        		document.qualform.HOME_ADDRESS2.focus();
				return false;
			}
			if(document.qualform.HOME_CITY.value == "")
			{
				alert("Please specify your optional delivery City.");
	        		document.qualform.HOME_CITY.focus();
				return false;
			}
			if (document.qualform.HOME_STATE.selectedIndex == 0)
			{
				alert("Please specify your optional delivery State/Province.");
		        	document.qualform.HOME_STATE.focus();
				return false;
			}

			// validate Canadian state/postal code combination
			if (!ValidCanPostal(document.qualform.HOME_STATE[document.qualform.HOME_STATE.selectedIndex].value,document.qualform.HOME_ZIPCODE.value))
			{
				alert ("Invalid optional delivery Canadian province/postal code combination.");
        			document.qualform.HOME_STATE.focus();
				return false;
			}

			if (document.qualform.HOME_STATE[document.qualform.HOME_STATE.selectedIndex].value == "53")
			{
				if (document.qualform.HOME_COUNTRY.value == "")
				{
					alert("Please specify your optional delivery Country.");
	        			document.qualform.HOME_COUNTRY.focus();
					return false;
				}
			}
			else
			{
				if (document.qualform.HOME_ZIPCODE.value.length < 5)
				{
					alert("Please specify your optional delivery Zip/Postal Code.");
	        			document.qualform.HOME_ZIPCODE.focus();
					return false;
				}
			}
		}
	
		if (document.qualform.EMAIL_ADDRESS.value == "")
		{
			alert("Please specify your E-mail Address.");
       			document.qualform.EMAIL_ADDRESS.focus();
			return false;
		}
	if ((document.qualform.EMAIL_ADDRESS.value != "") && (!validEmail(document.qualform.EMAIL_ADDRESS.value)))
	      {
		alert("You have entered an invalid email address. Please re-enter it.");
		document.qualform.EMAIL_ADDRESS.focus();
		return false;
	}

		if (document.qualform.EMAIL_ADDRESS2.value == "") 
		{
			alert("Please confirm your email address.");
			document.qualform.EMAIL_ADDRESS2.focus();
			return false;
		}   
		if(document.qualform.EMAIL_ADDRESS.value.toUpperCase() != document.qualform.EMAIL_ADDRESS2.value.toUpperCase())
		{
			alert("Confirmation email address does not match email address.");
	        	document.qualform.EMAIL_ADDRESS.focus();
			return false;
		}
 
     	
	if (!CheckDemos(document.qualform))
	{
		return false;
	}
	if (((mode == "ADD")|| (mode == "COA"))&&(CheckedRadioValue(document.qualform.REQUESTED_VERSION)=="P"))
	{

	if (document.qualform.STATE[document.qualform.STATE.selectedIndex].value == "53")

		{
			alert("Free Print Edition subscriptions are only available for addresses in the US or Canada.");
        	document.qualform.REQUESTED_VERSION[0].focus();
			return false;
		}
	}
	
	if (((mode == "ADD")|| (mode == "COA"))&&(CheckedRadioValue(document.qualform.REQUESTED_VERSION)=="P"))
	{

		if (document.qualform.HOME_STATE[document.qualform.HOME_STATE.selectedIndex].value == "53")
		{
		alert("Free Print Edition subscriptions are only available for addresses in the US or Canada.");
	        	document.qualform.REQUESTED_VERSION[0].focus();
			return false;
		}
	}

    }

 }
 
function PaidformCheck(mode)
{ 
	if(!CheckUnselects(document.paidform.SUBSCRIPTION))	
	{
		alert("Please select your subscription.");
    	   	document.paidform.SUBSCRIPTION[0].focus();
		return false;
	}
	if (mode == "ADD")
  	{
		if(document.paidform.FNAME.value == "")
		{
			alert("Please specify your First name.");
	       		document.paidform.FNAME.focus();
			return false;
		}
		if(document.paidform.LNAME.value == "")
		{
			alert("Please specify your Last name.");
       			document.paidform.LNAME.focus();
			return false;
		}
	}

	if (mode != "RENEW") 
  	{
		if (!CheckBusAddress())
		{
			return false;
		}				
	}
	if (document.paidform.PHONE.value == "")
	{
		alert("Please specify your phone number.");
		document.paidform.PHONE.focus();
		return false;
	} 
	
	if (document.paidform.EMAIL_ADDRESS.value == "") 
	{
		alert("Please specify your email address.");
		document.paidform.EMAIL_ADDRESS.focus();
		return false;
	}
	
	if ((document.paidform.EMAIL_ADDRESS.value != "") && (!validEmail(document.paidform.EMAIL_ADDRESS.value)))
	{
		alert("You have entered an invalid email address. Please re-enter it.");
		document.paidform.EMAIL_ADDRESS.focus();
		return false;
	}
	

	
	
		if (!CheckPaymentInfo())
		{
		//alert(CheckPaymentInfo())
		return false;
		}
 	    
	
	
	
	return true;
}
function CheckBusAddress()
{
	if(document.paidform.TITLE.value == "")
		{
			alert("Please specify your Title.");
	        	document.paidform.TITLE.focus();
			return false;
		}
		if(document.paidform.COMPANY.value == "")
		{
			alert("Please specify your Company name.");
        		document.paidform.COMPANY.focus();
			return false;
		}
	if(document.paidform.ADDRESS2.value == "")
	{
		alert("Please specify your Street Address.");
	        document.paidform.ADDRESS2.focus();
		return false;
	}
	if(document.paidform.CITY.value == "")
	{
		alert("Please specify your City.");
	        document.paidform.CITY.focus();
		return false;
	}
       if (document.paidform.STATE.selectedIndex == 0)
		{
			alert("Please specify your State/Province or select 'I am not in the U.S. or Canada'.");
		        document.paidform.STATE.focus();
			return false;
		}
	// validate Canadian state/postal code combination
		if (!ValidCanPostal(document.paidform.STATE[document.paidform.STATE.selectedIndex].value,document.paidform.ZIPCODE.value))
		{
			alert ("Invalid Canadian province/postal code combination.");
        		document.paidform.STATE.focus();
			return false;
		}
                if (document.paidform.STATE[document.paidform.STATE.selectedIndex].value == "53")
		{
			if (document.paidform.COUNTRY.value == "")
			{
				alert("Please specify your Country.");
	        		document.paidform.COUNTRY.focus();
				return false;
			}
		}
		else
		{
		if (document.paidform.ZIPCODE.value.length < 5)
		{
			alert("Please specify your Zip/Postal Code.");
	        	document.paidform.ZIPCODE.focus();
			return false;
		}
	}
	return true;
}
function CheckPaymentInfo()
{
	
	if(!CheckDropdown(document.paidform.CARD_TYPE))
	{
		alert("Please specify credit card.");
        	document.paidform.CARD_TYPE.focus();
		return false;
	}

	if(document.paidform.CARD_NUMBER.value == "")
	{
		alert("Please specify credit card number.");
        	document.paidform.CARD_NUMBER.focus();
		return false;
	}

	// Visa
	if(document.paidform.CARD_TYPE.selectedIndex == 1)
	{
		if (!isVisa(stripWhitespace(document.paidform.CARD_NUMBER.value)))
		{
			alert("Invalid credit card number. Please re-enter.")
        		document.paidform.CARD_NUMBER.focus();
			return false;
		}
	}

	// MasterCard
	if(document.paidform.CARD_TYPE.selectedIndex == 2)
	{
		if (!isMasterCard(stripWhitespace(document.paidform.CARD_NUMBER.value)))
		{
			alert("Invalid credid card number. Please re-enter.")
        		document.paidform.CARD_NUMBER.focus();
			return false;
		}
	}
	
	// AmEx
	if(document.paidform.CARD_TYPE.selectedIndex == 3)
	{
		if (!isAmericanExpress(stripWhitespace(document.paidform.CARD_NUMBER.value)))
		{
			alert("Invalid credid card number. Please re-enter.")
        		document.paidform.CARD_NUMBER.focus();
			return false;
		}
	}
	
	// Discover
	if(document.paidform.CARD_TYPE.selectedIndex == 4)
	{
		if (!isDiscover(stripWhitespace(document.paidform.CARD_NUMBER.value)))
		{
			alert("Invalid credid card number. Please re-enter.")
        		document.paidform.CARD_NUMBER.focus();
			return false;
		}
	}

	if(!CheckDropdown(document.paidform.ExpMon))
	{
 		alert('Please select the expiration month.');
		document.paidform.ExpMon.focus();
 		return false;
	}

	if(!CheckDropdown(document.paidform.ExpYear))
	{
 		alert('Please select the expiration year.');
		document.paidform.ExpYear.focus();
 		return false;
	}
var d, month, year;
   	d = new Date();
    
	month = d.getMonth() + 1;
	year = d.getFullYear() - 2000;
	if (document.forms[0].ExpYear[document.forms[0].ExpYear.selectedIndex].value < year)
	{
 		alert('Invalid Expiration date.');
		document.forms[0].ExpYear.focus();
 		return false;
	}
	else
	{
		if (document.forms[0].ExpYear[document.forms[0].ExpYear.selectedIndex].value == year)
		{
			if (document.forms[0].ExpMon[document.forms[0].ExpMon.selectedIndex].value < month)
			{
 				alert('Invalid Expiration date.');
				document.forms[0].ExpMon.focus();
 				return false;
			}
		}
	}
	if(document.paidform.SCODE.value == "")
	{
		alert('Please enter security code.');
		document.paidform.SCODE.focus();
		return false;
	}
	
	return true;
}
  
// declare global variables
var i;

// two arrays for Canadian province/postal code validation
var CanCodes=new Array("54","55","56","57","58","59","60","66","61","62","63","64","65");
var CanLetters=new Array("T","UV","R","E","A","B","X","X","KLMNP","C","GHJ","S","Y");

// check if first letter of postal code matches selected Canadian province
// StateCD is 2-digit code that Omeda uses to identify Canadian provinces (value of STATE field)
// PostCD is entered postal code (value of ZIPCODE field)
function ValidCanPostal(StateCD, PostCD)
{
	var fletter=PostCD.substring(0,1);
	fletter = fletter.toUpperCase();

	for(i=0;i<13;i++)
	{
		if (StateCD==CanCodes[i])
		{
			if (CanLetters[i].indexOf(fletter,0) == -1)
			{
				return false;
			}
			else
			{
				return true;
			}
		}
	}
	return true;
}
function IsCanadian(StateCD)
{
	for(i=0;i<13;i++)
	{
		if (StateCD==CanCodes[i])
		{
			return true;
		}
	}
	return false;
}


function checkEmailValue(emailValue)
{     //runs the validate script and returns error box or nonerror

	if (emailValue == "")
	{
		alert("You have not entered email address. Please re-enter it.");
		return false;
	}

	startPos = 0;

	commaPos = emailValue.indexOf(",",startPos+1);	//position of semicolomn
	while (commaPos != -1)
	{
		endPos = commaPos;
		emailElement = emailValue.substring(startPos,endPos);
		if(!validEmail(emailElement))
		{
			alert("You have entered an invalid email address. Please re-enter it.");
			return false;
		}
		startPos = endPos + 1;		
		commaPos = emailValue.indexOf(",",startPos);	//position of semicolomn
	}
	endPos = emailValue.length;
	emailElement = emailValue.substring(startPos,endPos);

	if(!validEmail(emailElement))
	{
		alert("You have entered an invalid email address. Please re-enter it.");
		return false;
	}
	return true;		
}
function checkSingleEmailValue(emailValue)
{     //runs the validate script and returns error box or nonerror

	if (emailValue == "")
	{
		alert("You have not entered email address. Please re-enter it.");
		return false;
	}

	if(!validEmail(emailValue))
	{
		alert("You have entered an invalid email address. Please re-enter it.");
		document.SendEmail.send_to.focus();
		return false;
	}
	return true;		
}								

function validEmail(email)
{
	invalidchars = " /:;,"

	if(email == "")
	{			//checks to see if blank field
		return false
	}
			
	for(i=0;i<invalidchars.length;i++){ //checks for invalid chars
			
	badchars = invalidchars.charAt(i)
			
	if(email.indexOf(badchars,0)!= -1)
	{
		return false
	}	
													}
	
	atPos = email.indexOf("@",1)  //holds position of "@"
			
	if(atPos == -1) 
	{	//checks to see if "@" present
		return false
	}
							
	if(email.indexOf("@",atPos+1) != -1) 
	{ //checks for second "@"
		return false
	}
							
	periodPos = email.indexOf(".",atPos) //holds position of "."
			
	if(periodPos == -1)
	{ //checks for presence of "."
		return false
	}
	if(periodPos+3 > email.length)
	{//makes sure at least two chars after the period
		return false
	}
	return true 
}
function CheckDropdown(selectBox)
{

	if(selectBox.selectedIndex == "0")
	{
		return false;
	}
	else
	{
		return true;
	}
}

function CheckUnselects(radioItem)
{
	for(i=0;i<radioItem.length;i++)
	{
		if(radioItem[i].checked)
		{
			return true;
		}//end if
	}//end for
	return false;
}
function CheckedRadioValue(radioItem)
{
	for(i=0;i<radioItem.length;i++)
	{
		if(radioItem[i].checked)
		{
			return radioItem[i].value;
		}//end if
	}//end for
	return false;
}
function CheckboxChecked(thisform,CheckBoxName)
{
var ChLength = CheckBoxName.length + 1;
var vName = CheckBoxName + "-";

var CBindex = 0;

	for ( i=0; i < thisform.elements.length; i++)
	{
		if (thisform.elements[i].type == "checkbox")
		{
			if (thisform.elements[i].name.substring(0,ChLength)==vName)
			{
				if (CBindex==0) {CBindex = i;}
				if (thisform.elements[i].checked)
				{
					return true;
					break;
				}
			}
		}

	}

	thisform.elements[CBindex].focus();
	return false;
}
function checkEmailValuePA(emailValue)
{     //runs the validate script and returns error box or nonerror

	if (emailValue == "")
	{
		//alert("You have not entered email address. Please re-enter it.");
		return true;
	}

	startPos = 0;

	commaPos = emailValue.indexOf(",",startPos+1);	//position of semicolomn
	while (commaPos != -1)
	{
		endPos = commaPos;
		emailElement = emailValue.substring(startPos,endPos);
		if(!validEmail(emailElement))
		{
			alert("You have entered an invalid email address. Please re-enter it.");
			return false;
		}
		startPos = endPos + 1;		
		commaPos = emailValue.indexOf(",",startPos);	//position of semicolomn
	}
	endPos = emailValue.length;
	emailElement = emailValue.substring(startPos,endPos);

	if(!validEmail(emailElement))
	{
		alert("You have entered an invalid email address. Please re-enter it.");
		return false;
	}
	return true;		
}
function AnswerCheck(form)
{ 
 	// at least one newsletter should be checked 
	if ((form.BROADBAND_DNP.checked == false) && (form.PROD_SHOWCASE_DNP.checked == false)&& (form.WHITEPAPERS_DNP.checked == false))
	{
 		alert('Please indicate which newsletter/s you would like to receive.');
		form.BROADBAND_DNP.focus();
		return false;
	}
 
    if (form.FNAME.value == "")
	{
		alert("Please specify your First name.");
        	form.FNAME.focus();
		return false;
	}
	if (form.LNAME.value == "")
	{
		alert ("Please specify your Last name.");
        	form.LNAME.focus();
		return false;
	}
	if (form.COMPANY.value == "")
	{
		alert ("Please specify your Company name.");
        	form.COMPANY.focus();
		return false;
	}
	if (form.COUNTRY.selectedIndex == 0)
	{
		alert ("Please specify your Country.");
		form.COUNTRY.focus();
		return false;
	}
	if (form.EMAIL_ADDRESS.value == "")
	{
		alert ("Please specify your E-mail Address.");
        	form.EMAIL_ADDRESS.focus();
		return false;
       	}
	if (!validEmail(form.EMAIL_ADDRESS.value))
	{
		alert ("You have entered an invalid email address. Please re-enter it.");
		form.EMAIL_ADDRESS.focus();
		return false;
	}
	return true;
}