function AnswerCheck(form,mode)
{ 

        if(!checkUnselects(form.AVIONICS_NEWSLETTER))	
	{
		alert("Please specify whether you wish to receive Avionics Intelligence?");
	        form.AVIONICS_NEWSLETTER[0].focus();
		return false;
	}
		
	if(form.AVIONICS_NEWSLETTER[1].checked == true)
	// stop validation when "not to receive" response
	{
		return true;
	}
	if (mode == "ADD")
	{
		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 (mode != "RENEW")
	{
                if(form.COMPANY.value == "")
		{
			alert("Please specify your Company name.");
        		form.COMPANY.focus();
			return false;
		}
		if(form.ADDRESS2.value == "")
		{
			alert("Please specify your Street Address.");
	        	form.ADDRESS2.focus();
			return false;
		}
		if(form.CITY.value == "")
		{
			alert("Please specify your City.");
	        	form.CITY.focus();
			return false;
		}

		if (form.STATE.selectedIndex == 0)
		{
			alert("Please specify your State/Province.");
		        form.STATE.focus();
			return false;
		}
	 // validate Canadian state/postal code combination
		if (!ValidCanPostal(form.STATE[form.STATE.selectedIndex].value,form.ZIPCODE.value))
		{
			alert ("Invalid Canadian province/postal code combination.");
        		form.STATE.focus();
			return false;
		}

		if (form.STATE[form.STATE.selectedIndex].value == "53")
		{
			if (form.COUNTRY.value == "")
			{
				alert("Please specify your Country.");
	        		form.COUNTRY.focus();
				return false;
			}
		}
		else
		{
			if (form.ZIPCODE.value.length < 5)
			{
				alert("Please specify your Zip/Postal Code.");
	        		form.ZIPCODE.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;
		}
//question 1

	if (!checkDropdown(form.BUSINESS))
    		{
    			alert("Please select your business.");
    			form.BUSINESS.focus();
    			return false;
    		} 
         if ((form.BUSINESS[form.BUSINESS.selectedIndex].value == '98')&& (form.BUSINESS_DESC.value == ''))
		{
			alert ("Please specify your business description.");
			form.BUSINESS_DESC.focus();
			return false;
		}
//question 2

	if (!checkDropdown(form.JOB_FUNCTION))
    		{
    			alert("Please select your job function.");
    			form.JOB_FUNCTION.focus();
    			return false;
    		} 
         if ((form.JOB_FUNCTION[form.JOB_FUNCTION.selectedIndex].value == '98')&& (form.JOB_FUNCTION_DESC.value == ''))
		{
			alert ("Please specify your job function description.");
			form.JOB_FUNCTION_DESC.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;
}
 
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 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 CheckedRadioValue(radioItem)
{
	for(i=0;i<radioItem.length;i++)
	{
		if(radioItem[i].checked)
		{
			return radioItem[i].value;
		}//end if
	}//end for
	return false;
}
function doReset()
{
	document.forms[0].reset();
}

function doSubmit()
{
	SubmitFlag = true;
	return;
}

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

	if(document.forms[0].RECEIVE_YES_NO[1].checked == true)
	// stop validation when "not to receive" response
	{
		return true;
	}
	
	if (ObjectExists(document.forms[0], "REQUESTED_VERSION"))
	{
		if(document.forms[0].REQUESTED_VERSION[0].checked == false && document.forms[0].REQUESTED_VERSION[1].checked == false)
		{
			alert("Please specify requested version");
        document.forms[0].REQUESTED_VERSION[0].focus();
		return false;

		
		}

	}	
	
	if ((mode == "SHORT") || (mode == "ABBR"))
	{	
		if ((document.forms[0].EMAIL_ADDRESS.value != "") && (!validEmail(document.forms[0].EMAIL_ADDRESS.value)))
		{
			alert("You have entered an invalid email address. Please re-enter it.");
			document.forms[0].EMAIL_ADDRESS.focus();
			return false;
		}	
		return true;
	}

	if (mode == "ADD")
	{
		if(document.forms[0].FNAME.value == "")
		{
			alert("Please specify your First name.");
        		document.forms[0].FNAME.focus();
			return false;
		}
		if(document.forms[0].LNAME.value == "")
		{
			alert("Please specify your Last name.");
        		document.forms[0].LNAME.focus();
			return false;
		}
	}
	if (mode != "RENEW")
	{
		if(document.forms[0].TITLE.value == "")
		{
			alert("Please specify your Title.");
	        document.forms[0].TITLE.focus();
			return false;
		}
		if(document.forms[0].COMPANY.value == "")
		{
			alert("Please specify your Company name.");
        		document.forms[0].COMPANY.focus();
			return false;
		}
		if(document.forms[0].ADDRESS2.value == "")
		{
			alert("Please specify your Street Address.");
	        	document.forms[0].ADDRESS2.focus();
			return false;
		}
		if(document.forms[0].CITY.value == "")
		{
			alert("Please specify your City.");
	        	document.forms[0].CITY.focus();
			return false;
		}
		if (document.forms[0].STATE.selectedIndex == 0)
		{
			alert("Please specify your State/Province or select 'I am not in the US or Canada'.");
		        document.forms[0].STATE.focus();
			return false;
		}

		// validate Canadian state/postal code combination
		if (!ValidCanPostal(document.forms[0].STATE[document.forms[0].STATE.selectedIndex].value,document.forms[0].ZIPCODE.value))
		{
			alert ("Invalid Canadian province/postal code combination.");
        		document.forms[0].STATE.focus();
			return false;
		}

		if (document.forms[0].STATE[document.forms[0].STATE.selectedIndex].value == "53")
		{
			if (document.forms[0].COUNTRY.value == "")
			{
				alert("Please specify your Country.");
	        		document.forms[0].COUNTRY.focus();
				return false;
			}
		}
		else
		{
			if (document.forms[0].ZIPCODE.value.length < 5)
			{
				alert("Please specify your Zip/Postal Code.");
	        		document.forms[0].ZIPCODE.focus();
				return false;
			}
		}
	}
if(document.forms[0].EMAIL_ADDRESS.value == "")
	{
		alert("Please specify your E-mail Address.");
       		document.forms[0].EMAIL_ADDRESS.focus();
		return false;
    	}
     if ((document.forms[0].EMAIL_ADDRESS.value != "") && (!validEmail(document.forms[0].EMAIL_ADDRESS.value)))
	{
		alert("You have entered an invalid email address. Please re-enter it.");
		document.forms[0].EMAIL_ADDRESS.focus();
		return false;
	}	
	
 }  
function formCheckAlt(mode, description)
{ 
	if(document.forms[0].RECEIVE_YES_NO[0].checked == false && document.forms[0].RECEIVE_YES_NO[1].checked == false)
	{
	alert("Please specify whether you wish to receive " + description +"?");
        document.forms[0].RECEIVE_YES_NO[0].focus();
		return false;
	}
	if(document.forms[0].RECEIVE_YES_NO[1].checked == true)
	// stop validation when "not to receive" response
	{
		return true;
	}


	if (mode == "ADD")
	{
		if(document.forms[0].FNAME.value == "")
		{
			alert("Please specify your First name.");
        		document.forms[0].FNAME.focus();
			return false;
		}
		if(document.forms[0].LNAME.value == "")
		{
			alert("Please specify your Last name.");
        		document.forms[0].LNAME.focus();
			return false;
		}
	}
	if (mode != "RENEW")
	{
		if(document.forms[0].TITLE.value == "")
		{
			alert("Please specify your Title.");
	        document.forms[0].TITLE.focus();
			return false;
		}
		if(document.forms[0].COMPANY.value == "")
		{
			alert("Please specify your Company name.");
        		document.forms[0].COMPANY.focus();
			return false;
		}
		if(document.forms[0].ADDRESS2.value == "")
		{
			alert("Please specify your Street Address.");
	        	document.forms[0].ADDRESS2.focus();
			return false;
		}
		if(document.forms[0].CITY.value == "")
		{
			alert("Please specify your City.");
	        	document.forms[0].CITY.focus();
			return false;
		}
		if (document.forms[0].STATE.selectedIndex == 0)
		{
			alert("Please specify your State/Province or select 'I am not in the US or Canada'.");
		        document.forms[0].STATE.focus();
			return false;
		}

		// validate Canadian state/postal code combination
		if (!ValidCanPostal(document.forms[0].STATE[document.forms[0].STATE.selectedIndex].value,document.forms[0].ZIPCODE.value))
		{
			alert ("Invalid Canadian province/postal code combination.");
        		document.forms[0].STATE.focus();
			return false;
		}

		if (document.forms[0].STATE[document.forms[0].STATE.selectedIndex].value == "53")
		{
			if (document.forms[0].COUNTRY.value == "")
			{
				alert("Please specify your Country.");
	        		document.forms[0].COUNTRY.focus();
				return false;
			}
		}
		else
		{
			if (document.forms[0].ZIPCODE.value.length < 5)
			{
				alert("Please specify your Zip/Postal Code.");
	        		document.forms[0].ZIPCODE.focus();
				return false;
			}
		}

		if ((document.forms[0].HOME_ADDRESS1.value != "")
			|| (document.forms[0].HOME_ADDRESS2.value != "")
			|| (document.forms[0].HOME_CITY.value != "")
			|| (document.forms[0].HOME_ZIPCODE.value != "")
			|| (document.forms[0].HOME_STATE.selectedIndex > 0))
		{
			if(document.forms[0].HOME_ADDRESS2.value == "")
			{
				alert("Please specify your optional delivery Street Address.");
	        		document.forms[0].HOME_ADDRESS2.focus();
				return false;
			}
			if(document.forms[0].HOME_CITY.value == "")
			{
				alert("Please specify your optional delivery City.");
	        		document.forms[0].HOME_CITY.focus();
				return false;
			}
			if (document.forms[0].HOME_STATE.selectedIndex == 0)
			{
				alert("Please specify your optional delivery State/Province or select 'I am not in the US or Canada'.");
		        	document.forms[0].HOME_STATE.focus();
				return false;
			}

			// validate Canadian state/postal code combination
			if (!ValidCanPostal(document.forms[0].HOME_STATE[document.forms[0].HOME_STATE.selectedIndex].value,document.forms[0].HOME_ZIPCODE.value))
			{
				alert ("Invalid optional delivery Canadian province/postal code combination.");
        			document.forms[0].HOME_STATE.focus();
				return false;
			}

			if (document.forms[0].HOME_STATE[document.forms[0].HOME_STATE.selectedIndex].value == "53")
			{
				if (document.forms[0].HOME_COUNTRY.value == "")
				{
					alert("Please specify your optional delivery Country.");
	        			document.forms[0].HOME_COUNTRY.focus();
					return false;
				}
			}
			else
			{
				if (document.forms[0].HOME_ZIPCODE.value.length < 5)
				{
					alert("Please specify your optional delivery Zip/Postal Code.");
	        			document.forms[0].HOME_ZIPCODE.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 ObjectExists(form,fieldname)
{
	for ( i=0; i < form.elements.length; i++)
	{
		if (form.elements[i].name == fieldname)
		{
			return true;
		}
	}
	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;
				}
			}
		}

	}
	return false;
}