function formCheck(description, mode)
{ 
  if (mode=="plan")
  {
     if (ObjectExists(document.qualform,"RECEIVE_YES_NO"))
     {
	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 (ObjectExists(document.qualform,"plan"))
     {
	if(!CheckUnselects(document.qualform.plan))	
	{
		alert("Please select your current status.");
        	document.qualform.plan[0].focus();
		return false;
	}
     }

     if (ObjectExists(document.qualform,"REQUESTED_VERSION"))
     {
	if(!CheckUnselects(document.qualform.REQUESTED_VERSION))	
	{
		alert("Please select desired magazine format.");
        	document.qualform.REQUESTED_VERSION[0].focus();
		return false;
	}
     }

     if (ObjectExists(document.qualform,"plan"))
     {
	if (document.qualform.plan[0].checked)
	{
		if (document.qualform.MY_RDRNUM.value == "")
		{
			alert("Please specify your Account #");
        		document.qualform.MY_RDRNUM.focus();
			return false;
		}
		if (document.qualform.LNAME_FIRST4.value == "")
		{
			alert("Please enter four letters of your last name");
        		document.qualform.LNAME_FIRST4.focus();
			return false;
		}
	}
     }
  return true;
  }

  if (mode=="form")
  { 
     if (ObjectExists(document.qualform,"RECEIVE_YES_NO"))
     {
	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 (ObjectExists(document.qualform,"REQUESTED_VERSION"))
     {
	if(!CheckUnselects(document.qualform.REQUESTED_VERSION))	
	{
		alert("Please select desired magazine format.");
        	document.qualform.REQUESTED_VERSION[0].focus();
		return false;
	}
     }

     if (ObjectExists(document.qualform,"FNAME"))
     {
	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(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 or select 'I am not in the US or Canada'.");
		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 (!CheckDemos(document.qualform))
	{
		return false;
	}
     } 
     return true;
  }

  if (mode=="paid")
  {
     if (ObjectExists(document.paidform,"FNAME"))
     {
	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(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 Province or select 'I am not in the US 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 Postal Code.");
	        	document.paidform.ZIPCODE.focus();
			return false;
		}
	}
	if  (document.paidform.EMAIL_ADDRESS.value == "")
	{
		alert("Please specify your E-mail 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;
  }
}  

// 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 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 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 AnswerCheck(form)
{ 
	if(form.RECEIVE_NEWSLETTER[0].checked == true)
	{
		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.EMAIL_ADDRESS.value == "")
		{
			alert("Please specify your E-mail Address.");
        		form.EMAIL_ADDRESS.focus();
			return false;
                } 
		return true;
	}
} 
function PaidformCheck(mode)
{ 
	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.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;
}


// checks whether free print version is available for this subscriber. 
// return true when rejecte, false when allowed
function RejectPrint(form)
{
	if (form.REQUESTED_VERSION[1].checked)
	{
		if (IsCanadian(form.STATE[form.STATE.selectedIndex].value) || (form.STATE[form.STATE.selectedIndex].value == "53"))
		{
			alert ("Free print magazine is only avalable in U.S. Please change magazine\n   format to digital or click paid subscription link on the bottom."); 
			return true;
		}
	}

}


function CheckBusAddress()
{
	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()
{
        var d, month, year;
   	d = new Date();

	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;
	}
        month = d.getMonth() + 1;
	year = d.getFullYear() - 2000;
	if (document.paidform.ExpYear[document.paidform.ExpYear.selectedIndex].value < year)
	{
 		alert('Invalid Expiration date.');
		document.paidform.ExpYear.focus();
 		return false;
	}

	else
	{
		if (document.paidform.ExpYear[document.paidform.ExpYear.selectedIndex].value == year)
		{
			if (document.paidform.ExpMon[document.paidform.ExpMon.selectedIndex].value < month)
			{
 				alert('Invalid Expiration date.');
				document.paidform.ExpMon.focus();
 				return false;
			}
		}
	}
	// zh
	
	//if(document.paidform.SCODE.value == "")
//	{
//		alert('Please enter security code.');
//		document.paidform.SCODE.focus();
//		return false;
//	}
	return true;
}
function ValidNum(NumObj)
{
	var myNum, cleanNum;
	
	myNum = NumObj.value
	cleanNum = parseInt(myNum);

	if ( myNum == "")
	{
		return true;
	}
       	if(myNum != cleanNum)
	
	{
		alert("You have entered an invalid number.Please re-enter.");
		NumObj.focus();
		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 ObjectExists(form,fieldname)
{
	for ( i=0; i < form.elements.length; i++)
	{
		if (form.elements[i].name == fieldname)
		{
			return true;
		}
	}
	return false;
}

function IsCanadian(StateCD)
{
	for(i=0;i<13;i++)
	{
		if (StateCD==CanCodes[i])
		{
			return true;
		}
	}
	return false;
}