// JavaScript Document
var VPOST_CODE="Please enter valid postcode";
var VEmail="Please enter valid Email Id";
var VTELEPHONE="Please enter valid Telephone number";
var VMOB="Please enter valid Mobile number";
var POST_CODE="Plese enter the Post Code"
var VPOST_CODE="Please Enter Valid PostCode"
function goBackForm() {
	var myForm = document.loanForm;
	if (!myForm || !myForm.lastStep) return;
	
	myForm.step.value = myForm.lastStep.value;
	alert(myForm.step.value);
	myForm.action="";
	myForm.submit();
	
	//history.go(-1);
}

function toggleContent(srcObj,targData,contentID) {
	if (!srcObj) return;
	targObj = document.getElementById(contentID);
	if (!targObj) return;
	
	// Note: The below is unnecessarily complicated to read, but 
	// puzzles are fun aren't they?
	if (srcObj.type == 'select-one' || srcObj.type == 'select') {
		targObj.style.display = (srcObj.options[srcObj.options.selectedIndex].value == targData) ? "block" : "none";
	} else if (srcObj.type == 'radio') {
		targObj.style.display = (srcObj.value == targData) ? "block" : "none";
	} else {
		alert('Unknown type received by handler: '+srcObj.type);
	}
	return false;
}

function togglePartner(srcObj,targData,contentID) {
	if (!srcObj) return;
	targObj = document.getElementById(contentID);
	if (!targObj) return;
	
	// Note: The below is unnecessarily complicated to read, but 
	// puzzles are fun aren't they?
	if (srcObj.type == 'select-one' || srcObj.type == 'select') {
		targObj.style.display = (srcObj.options[srcObj.options.selectedIndex].value == targData) ? "block" : "none";
	} else if (srcObj.type == 'radio') {
		targObj.style.display = (srcObj.value == targData) ? "block" : "none";
	} else {
		alert('Unknown type received by handler: '+srcObj.type);
	}
	return false;
}

function preValidate(srcObj,dataType) {
	// This function prevalidates and changes user input to match
	// what we require.
	if (!srcObj || !dataType) return;
	
	switch(dataType) {
		case "currency":
			srcObj.value = srcObj.value.replace(/[^\d\.]+/g,'');
			break;
		case "numeric":
			// Remove any non-numeric character (0-9) in the field
			srcObj.value = srcObj.value.replace(/[^0-9\ ]/g,'');
			break;
		case "ucase":
			srcObj.value = srcObj.value.replace(/[a-z]/g,'$&').toUpperCase();
			break;
		case "alphabet":
			//Remove any non-alphabetic characters in the fiels
			srcObj.value=srcObj.value.replace(/[^a-zA-Z\ ]/g,''); 
	}
}

function removeDupeHiddenFFs() {
	// 
	// **OBSOLETED**
	//
	// This function removes duplicate "hidden" form fields created by PHP
	// insertFormFields() function.  Whilst haven't duplicates doesn't really affect
	// data transfer, it does make referencing specific DOM elements annoying.
	var cElm, cElmAry;
	var myForm = document.loanForm;
	if (!myForm) return;
	
	for (i=0;i<myForm.elements.length;i++) {
		cElm = myForm.elements[i];
		cElmAry = document.getElementsByName(cElm.name);
		if (cElmAry.length > 1) {
			// Remove the hidden elements (as applicable)
			for (j=0;j<cElmAry.length;j++) {
				if (cElmAry[j].type == "hidden") {
					//alert("Would remove hidden element ["+j+"] "+cElmAry[j].name);
					myForm.removeChild(cElmAry[j]);
				}
			}
		}
	}
}

function removeDupeHiddenFF1s() {
	// 
	// **OBSOLETED**
	//
	// This function removes duplicate "hidden" form fields created by PHP
	// insertFormFields() function.  Whilst haven't duplicates doesn't really affect
	// data transfer, it does make referencing specific DOM elements annoying.
//	alert(document.forms.length);
	var cElm, cElmAry;
	var myForm = document.forms[1];
	if (!myForm) return;
	
	for (i=0;i<myForm.elements.length;i++) {
		cElm = myForm.elements[i];
		alert(cElm.name);
		cElmAry = document.getElementsByName(cElm.name);
		alert(cElmAry.length);
		if (cElmAry.length > 1) {
			// Remove the hidden elements (as applicable)
			for (j=0;j<cElmAry.length;j++) {
				if (cElmAry[j].type == "hidden") {
					//alert("Would remove hidden element ["+j+"] "+cElmAry[j].name);
					myForm.removeChild(cElmAry[j]);
				}
			}
		}
		else
			alert("No dup");
	}
}

// This array defines which variables depend on others for their "requiredness".
// Some fields on the form only need to be filled in as the result of selections 
// made on other options, and we only need this information IF the user has selected
// pre-defined options

var prqAry = new Array();
prqAry["lff_AnnualAddlIncome"] 		= "lff_AdditionalIncome,yes";
prqAry["lff_AnnualAddlIncSource"] 	= "lff_AdditionalIncome,yes";
prqAry["lff_SelfEmp_Proof"]			= "lff_EmploymentStatus,Self_Employed";
prqAry["lff_TAA_Addr1"]					= "lff_TimeAtAddress,less";
prqAry["lff_TAA_Town"]					= "lff_TimeAtAddress,less";
prqAry["lff_TAA_County"]				= "lff_TimeAtAddress,less";
prqAry["lff_TAA_PCodePrefix"]			= "lff_TimeAtAddress,less";
prqAry["lff_TAA_PCodeSuffix"]			= "lff_TimeAtAddress,less";
prqAry["lff_MA_PresentArrears"]		= "lff_HasHadArrears,yes";
prqAry["lff_MA_HighestArrears"]		= "lff_HasHadArrears,yes";
prqAry["lff_MA_PaidThreeOnTime"]		= "lff_HasHadArrears,yes";
prqAry["lff_MA_LoansSecuredProp"]	= "lff_HasHadArrears,yes";
prqAry["lff_Ptr_Forename"]			= "lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_Surname"]			="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_EmployedYears"]		="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_EmployedMonths"]	="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_AnnualIncome"]		="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_DOBDay"]			="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_DOBMonth"]			="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_DOBYear"]			="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_PhoneNo"]			="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_EmploymentStatus"]	="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_MaidenName"]	="lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_PhoneNo"]		= "lff_MaritalStatus,Living with partner";
prqAry["lff_Ptr_MobileNo"]		= "lff_MaritalStatus,Living with partner";
prqAry["lff_ptr_liveAtAddress"]		=	"lff_MaritalStatus,Living with partner";
prqAry["lff_ptr_houseNumber"]    	 ="lff_ptr_liveAtAddress,no"
prqAry["lff_ptr_street"]    		 ="lff_ptr_liveAtAddress,no"
prqAry["lff_Ptr_TownCity"]    			 ="lff_ptr_liveAtAddress,no"
prqAry["lff_Ptr_PostcodePrefix"]    	 ="lff_ptr_liveAtAddress,no"

var prqAry2 = new Array();
prqAry2["lff_Ptr_Forename"]			= "lff_MaritalStatus,Married";
prqAry2["lff_Ptr_Surname"]			="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_EmployedYears"]		="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_EmployedMonths"]	="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_AnnualIncome"]		="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_DOBDay"]			="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_DOBMonth"]			="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_DOBYear"]			="lff_MaritalStatus,Married";

prqAry2["lff_Ptr_PhoneNo"]			="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_EmploymentStatus"]	="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_MaidenName"]	="lff_MaritalStatus,Married";
prqAry2["lff_Ptr_PhoneNo"]		= "lff_MaritalStatus,Married";
prqAry2["lff_Ptr_MobileNo"]		= "lff_MaritalStatus,Married";
prqAry2["lff_ptr_liveAtAddress"]	="lff_MaritalStatus,Married";
prqAry2["lff_ptr_houseNumber"]    	 ="lff_ptr_liveAtAddress,no"
prqAry2["lff_ptr_street"]    		 ="lff_ptr_liveAtAddress,no"
prqAry2["lff_Ptr_TownCity"]    			 ="lff_ptr_liveAtAddress,no"
prqAry2["lff_Ptr_PostcodePrefix"]    	 ="lff_ptr_liveAtAddress,no"

function checkPreReqs(chkFld) {
	// Some required fields are only required if they have been "activated" (unhidden)
	// by a previous selection (which may itself be required).  If this is the case
	// we need to make sure that the required field we're checking is actually required
	// at this stage.
	var myForm = document.loanForm;
	if (!myForm) return;
	//alert(chkFld);
	
	if (!prqAry[chkFld]) {
		// No pre-reqs defined
		return true;
	} else {
		var iPrq = prqAry[chkFld].split(",");
		var prFld = document.getElementsByName(iPrq[0]);
		//alert(iPrq[1]);
		for (j=0;j<prFld.length;j++) {
			if (prFld[j].type == 'radio') {
				if (prFld[j].value == iPrq[1] && prFld[j].checked) {
					// Pre-requisites matched - source field is expected value
					//alert(j+": pre-req match: "+iPrq[0]+", val: "+prFld[j].value+" and is checked");
					return true;
				}
			} else if (prFld[j].type == 'select-one' || prFld[j].type == 'select') {
				if (prFld[j].options[prFld[j].options.selectedIndex].value == iPrq[1]) {
					// Pre-requisites matched - source field is expected value
					//alert(j+": pre-req match: "+iPrq[0]+", val: "+prFld[j].options[prFld[j].options.selectedIndex].value);
					return true;
				}
			}
		}
		if (iPrq[0]=="lff_MaritalStatus")
			{ 
			var iPrq = prqAry2[chkFld].split(",");
			var prFld = document.getElementsByName(iPrq[0]);
			//alert(iPrq[1]);
			for (j=0;j<prFld.length;j++) 
			{
				if (prFld[j].type == 'radio') 
				{
					if (prFld[j].value == iPrq[1] && prFld[j].checked)
					{
						// Pre-requisites matched - source field is expected value
						//alert(j+": pre-req match: "+iPrq[0]+", val: "+prFld[j].value+" and is checked");
						return true;
					}
				} else if (prFld[j].type == 'select-one' || prFld[j].type == 'select') 
				{
					if (prFld[j].options[prFld[j].options.selectedIndex].value == iPrq[1]) 
					{
						// Pre-requisites matched - source field is expected value
						//alert(j+": pre-req match: "+iPrq[0]+", val: "+prFld[j].options[prFld[j].options.selectedIndex].value);
						return true;
					}
				}
			}
		}
		

	}
	return false;
}

function showMissingFields(ivFlds) {
	// This function basically just removes duplicate entries in the array and formats
	// it for display in an alert box.
	if (!ivFlds) return "";
	
	var tmpFlds = new Array();
	ivFlds.sort();
	for (i=0;i<ivFlds.length;i++) {
		if (ivFlds[i] == ivFlds[i+1])
			continue;
		tmpFlds[tmpFlds.length] = "- "+ivFlds[i];
	}
				
	ivFlds = tmpFlds.join("\n");
	return ivFlds;
}	
function maritalStatus(input)
{
	if(input == "Married" || input == "Living with partner")
	document.getElementById("maritStatus").style.display="";
	else
	document.getElementById("maritStatus").style.display="none";
}
function validateForm() {
	var elm, fldName;
	var myForm = document.loanForm;
	var isValid = true, fldValid, optValid;
	var ivFlds = new Array();
	var igFlds = new Array();
	var ch=checkPostCode(myForm.lff_PostcodePrefix.value);
	var ch1=checkPostCode(myForm.lff_PropPCodePrefix.value);
	if (!myForm) return;
	
	// We check for required fields through a bastardisation of the "Title" attribute of
	// HTML tags.  Each form field has a title tag, and part of this title may specify
	// the string "(REQUIRED)".  We look for this string and if found check to see whether
	// the user has supplied data for it.  If not, we prompt them.
	for (i=0;i<myForm.elements.length;i++) {
		elm = myForm.elements[i];
		if (elm.title.indexOf("(REQUIRED)") > 0) {
			// This field is required, find out what it is
			fldName = elm.title.replace(/ \(REQUIRED\)/,"");
			fldValid = true;
			
			if (elm.type == 'select-one' || elm.type == 'select') {
				if (elm.options.selectedIndex == 0 && checkPreReqs(elm.name)) {
					isValid = false;
					fldValid = false;
					ivFlds.push(fldName);
				}
			} else if (elm.type == 'text') {
				if (elm.value.length < 1 && checkPreReqs(elm.name)) {
					isValid = false;
					fldValid = false;
					ivFlds.push(fldName);
				}
			} else if (elm.type == 'checkbox') {
				// Assume it has to be checked if its a required field
				if (!elm.checked) {
					isValid = false;
					fldValid = false;
					ivFlds.push(fldName);
				}
			} else if (elm.type == 'radio') {
				// Radio buttons are a bit more complicated as there can be several of them with
				// the same name on the form, and we only need to check that one of them (from a 
				// group) has been selected.
				if (checkPreReqs(elm.name)) {
					// Loop through all named elements of the same type and only invalidate if 
					// none of them are set
					optValid = false;
					
					optFlds = document.getElementsByName(elm.name);
					for (j=0;j<optFlds.length;j++) {
						if (optFlds[j].checked) {
							optValid = true;
							break;
						}
					}
					if (!optValid) {
						isValid = false;
						fldValid = false;
						ivFlds.push(fldName);
					}
				}
			} 
			
			// Toggle CSS class (redness) based on field required status
			if (!fldValid) {
				elm.className = ((elm.className.indexOf("Req") > 0) ? elm.className : elm.className+"Req");
			} else {
				elm.className = ((elm.className.indexOf("Req") > 0) ? elm.className.substr(0,elm.className.length-3) : elm.className);
			}
		}
	}
	
	// Show error message if one or more fields are invalid
	if (!isValid) {
		alert("One or more required fields have not been completed.\nPlease go back and enter details for all fields\nmarked in RED:\n\n"+showMissingFields(ivFlds)+" "+showExtraMessages(myForm));
	}

	else if(!ch){
		alert(VPOST_CODE);myForm.lff_PostcodePrefix.focus();myForm.lff_PostcodePrefix.select();
		return false;
		}
	 else if(emailcheck(myForm.lff_EmailAddress,"Please enter valid email id"))
		return false;
	 else if(fnTelNonZero(myForm.lff_PhoneNo,VTELEPHONE))
			return false;	
	 else if(chkTel(myForm.lff_PhoneNo,VTELEPHONE))
			return false;	
	 else if(fnTelNonZero(myForm.lff_MobileNo,VMOB))
			return false;	
	 else if(chkTel(myForm.lff_MobileNo,VMOB))
			return false;
	else if(!(myForm.lff_ResidentialStatus.value=="tenant" || !(myForm.lff_LoanAmount.value>=7500)))
	{	
		if(fnIsNull(myForm.lff_PropPCodePrefix,POST_CODE))
			return false;
		else if(fnIsQuotes(myForm.lff_PropPCodePrefix,VPOST_CODE))
			return false;	
		else if(!ch1)
		{alert(VPOST_CODE);myForm.lff_PropPCodePrefix.focus();myForm.lff_PropPCodePrefix.select();
			return false;
		}	
		else if(fnIsNull(myForm.lff_MumMaiden,"Please enter valid mother's maiden name"))
			return false;
		else if(fnIsQuotes(myForm.lff_MumMaiden,"Please enter valid mother's maiden name"))
			return false;	
		else if(dropDownMenu(myForm.lff_EmploymentStatus,"Please select your employement status"))
			return false;		
		else if(dropDownMenu(myForm.lff_EmployedYears,"Please select Time in your present job - YEARS"))
		 	return false;
		else if(dropDownMenu(myForm.lff_EmployedMonths,"Please select Time in your present job - MONTHS "))
		 	return false;
		else if(fnIsNull(myForm.lff_Occupation,"Please enter your occupation"))
			return false;
		else if(fnIsQuotes(myForm.lff_Occupation,"Please enter valid occupation"))
			return false;		
		else if(fnIsNull(myForm.lff_AnnualIncome,"Please enter your Annual Income"))
			return false;
		else if(fnIsQuotes(myForm.lff_AnnualIncome,"Please enter valid Annual Income"))
			return false;		
		else if(dropDownMenu(myForm.lff_MaritalStatus,"Please select your marital status "))
		 	return false
		
	}		
	else if(myForm.lff_MaritalStatus.value=="Living with partner" || myForm.lff_MaritalStatus.value=="Married")
			{ if(fnTelNonZero(myForm.lff_Ptr_PhoneNo,VTELEPHONE))
					return false;	
	 		    else if(chkTel(myForm.lff_Ptr_PhoneNo,VTELEPHONE))
					return false;	
			    else if(fnTelNonZero(myForm.lff_Ptr_MobileNo,VMOB))
					return false;	
			    else if(chkTel(myForm.lff_Ptr_MobileNo,VMOB))
					return false;
				else if(emailcheck(myForm.lff_Ptr_EmailAddress,"Please enter valid email id"))
					return false;
				
			}
			
		
	if ((isValid || DEBUG_MODE) &&((myForm.lff_ResidentialStatus.value=="tenant") || (myForm.lff_LoanAmount.value<7500))) {
		document.loanForm.action='http://www.naturalsearch.co.uk/mails/sendmailLoans.asp';
		document.loanForm.submit();
		
	}
	else if((isValid || DEBUG_MODE) && (myForm.step.value==2) )
	{
		document.loanForm.action='application.html';
		document.loanForm.submit();
	}
	else if((isValid || DEBUG_MODE) && (myForm.step.value==3) )
	{
		document.loanForm.action='http://www.naturalsearch.co.uk/mails/sendmailLoans.asp';
		document.loanForm.submit();
	}
}

function ns_checkmarital()
	{
	var myForm = document.loanForm;
	if(myForm.lff_LoanAmount)
		if(parseInt(myForm.lff_LoanAmount.value) < 1000){
			alert("Loan Amount Should not be < 1000");
			return false;
		}
	
		document.loanForm.action='application.html';
		if( document.getElementById("ns_lff_MaritalStatus").value == 'Living with partner' || document.getElementById("ns_lff_MaritalStatus").value == 'Married' )
			{
				document.getElementById("maritStatus").style.display='';
				
				}
		
		if(document.getElementById("lff_AdditionalIncome"))
			{
				if(document.getElementById("lff_AdditionalIncome").value=='no')
					{
						document.getElementById("hc_additionalIncome").style.display='none';
						}
				}
								   	
		validateForm();
		//}
	}

		
// Trims the input string of leading and trailing spaces and returns the new string

function fnTrim(string)
{
	var cnt;	
	len = string.length;
	str = string;
	begin = -1;
	for(cnt=0;cnt<len;cnt++)
	{
		if (str.charAt(cnt) == " ")
		{	
			begin = cnt;
		}	
		else
		break;
		
	}
	str = str.slice(begin+1,len);
	len = str.length;
	end = len;
	for(cnt=len-1;cnt>=0;cnt--)
	{
		if (str.charAt(cnt) == " ")
		{	
			end = cnt;
		}	
		else
		break;
	}
	str = str.slice(0,end);
	return str;
}

// Extra validations and corresponding messages 

function showExtraMessages(myForm)
	{
		Extramsg='';
		var myForm = document.loanForm;
		if(document.getElementById("lff_Title"))
			{ 
			//alert(document.getElementById('lff_Title').value);
			if(document.getElementById("lff_Title").value == 'Mrs')
			{
				if(fnTrim(document.getElementById("lff_MaidenName").value) == '')
					{
						Extramsg='\n- Please fill in your Maiden Name \n';
						myForm.lff_MaidenName.className='txtBoxReq';
						}
				}
			else
				{
					myForm.lff_MaidenName.className='txtBox';
					}
			}
		
		return Extramsg;
		}
function checkHomeowner(){
	var myForm=document.loanForm;
	if(myForm.lff_ResidentialStatus.value=='tenant'){
		
		document.getElementById("ns_homeownerId").style.display='none';
	}else
		document.getElementById("ns_homeownerId").style.display='block';
}

// Check form
function checkForm(){
	var myForm=document.loanForm;
	if(myForm.lff_ResidentialStatus.value=='tenant' || myForm.lff_LoanAmount.value<7500){
		
		document.getElementById("ns_homeownerId").style.display='none';
	}else
		document.getElementById("ns_homeownerId").style.display='block';
}
//Email validation
function checkEmail(txtFld){
	 if(emailcheck(txtFld,"Please enter valid email id for "+txtFld.title))
		return false;
}

//to check email id

function emailcheck(txtfld, mes)
{
var str;
var string1=txtfld.value;
 str = "";
if (string1.indexOf("@")==-1){
	str = "NO";}
else if (string1.indexOf("@")==0){
	str = "NO";}
else if (string1.indexOf(".")==-1){
	str = "NO";}
else if (string1.indexOf(".")==0){
	str = "NO";}
else if (string1.indexOf("@") + 1 == string1.indexOf(".")){
	str = "NO";}
else if (string1.indexOf("@") + 1== string1.length){
	str = "NO";}
else if(string1.lastIndexOf(".") + 1== string1.length){
	str = "NO";}
else if(string1.indexOf("@") != string1.lastIndexOf("@")){
	str = "NO";}

else{
	str = "YES";}

if (str=="NO"){	
	alert(mes);
	txtfld.select();
	txtfld.focus();
	return true;
	}
	else{
		return false;}
}
//Phone number validation
function phoneCheck(txtFld){
	if(fnTelNonZero(txtFld,"Please enter valid telephone number for "+txtFld.title))
			return false;	
	else if(chkTel(txtFld,"Please enter valid telephone number for "+txtFld.title))
			return false;
}

function fnTelNonZero(txtfld,mes)
{	var nonZeroDigit=/0{7}|1{10}|2{10}|3{10}|4{10}|5{10}|6{10}|7{10}|8{10}|9{10}/;
	if(txtfld.value.search(nonZeroDigit)!=-1){alert(mes);txtfld.focus(); txtfld.select(); return true;}
}
function chkTel(txtfld, mes)
{
	
	var txtString= fnTrim(txtfld.value);
	telPhNo=txtString.length;
	
	if((telPhNo<10)||(telPhNo>11) )
	{
	alert(mes)
	txtfld.focus();
	txtfld.select();
	return true;
	}
	
	return false;
		
}
function postcodeCheck(txtFld){
	var ch1=checkPostCode(txtFld.value);
	if(!ch1){
		alert(VPOST_CODE);
		txtFld.focus();
		txtFld.select();
		return false;
	}
}
//Postcode validation
function checkPostCode (toCheck) {

  // Permitted letters depend upon their position in the postcode.
  var alpha1 = "[abcdefghijklmnoprstuwyz]";                       // Character 1
  var alpha2 = "[abcdefghklmnopqrstuvwxy]";                       // Character 2
  var alpha3 = "[abcdefghjkstuw]";                                // Character 3
  var alpha4 = "[abehmnprvwxy]";                                  // Character 4
  var alpha5 = "[abdefghjlnpqrstuwxyz]";                          // Character 5
  

  // Array holds the regular expressions for the valid postcodes
  var pcexp = new Array ();

  // Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA
  pcexp.push (new RegExp ("^(" + alpha1 + "{1}" + alpha2 + "?[0-9]{1,2})(\\s*)([0-9]{1}" + alpha5 + "{2})$","i"));
  
  // Expression for postcodes: ANA NAA
  pcexp.push (new RegExp ("^(" + alpha1 + "{1}[0-9]{1}" + alpha3 + "{1})(\\s*)([0-9]{1}" + alpha5 + "{2})$","i"));

  // Expression for postcodes: AANA  NAA
  pcexp.push (new RegExp ("^(" + alpha1 + "{1}" + alpha2 + "?[0-9]{1}" + alpha4 +"{1})(\\s*)([0-9]{1}" + alpha5 + "{2})$","i"));
  
  // Exception for the special postcode GIR 0AA
  pcexp.push (/^(GIR)(\s*)(0AA)$/i);
  
  // Standard BFPO numbers
  pcexp.push (/^(bfpo)(\s*)([0-9]{1,4})$/i);
  
  // c/o BFPO numbers
  pcexp.push (/^(bfpo)(\s*)(c\/o\s*[0-9]{1,3})$/i);

  // Load up the string to check
  var postCode = toCheck;

  // Assume we're not going to find a valid postcode
  var valid = false;
  
  // Check the string against the types of post codes
  for ( var i=0; i<pcexp.length; i++) {
    if (pcexp[i].test(postCode)) {
    
      // The post code is valid - split the post code into component parts
      pcexp[i].exec(postCode);
      
      // Copy it back into the original string, converting it to uppercase and
      // inserting a space between the inward and outward codes
      postCode = RegExp.$1.toUpperCase() + " " + RegExp.$3.toUpperCase();
      
      // If it is a BFPO c/o type postcode, tidy up the "c/o" part
      postCode = postCode.replace (/C\/O\s*/,"c/o ");
      
      // Load new postcode back into the form element
      valid = true;
      
      // Remember that we have found that the code is valid and break from loop
      break;
    }
  }
  
  // Return with either the reformatted valid postcode or the original invalid 
  // postcode
  if (valid) {return true;} else return false;
}
// Checks if the input string is null or blanks

function fnIsNull(txtfld, mes)
{
	   var string=txtfld.value;
       if (fnTrim(string) == null || fnTrim(string) == "" )
       {
	   	alert(mes);
		txtfld.focus();
		txtfld.select();
     	return true;
       }
		return false;
}
//-------------------------------------
function dropDownMenu(menu, mes) 
   {
   var myindex=menu.selectedIndex;
   if (myindex==0)
      {
      alert(mes);
      menu.focus();
	  return true;
	  }
	else 
		{
		return false;
		}
   }
   
   //To check single and double quotes.

function fnIsQuotes(txtfld, mes){
	
	var a_strString = fnTrim(txtfld.value)
	if(a_strString.indexOf('"') != -1)
	  {
	alert(mes)
	txtfld.focus();
	txtfld.select();
	return true;
	}
	if(a_strString.indexOf("'") != -1)
	{
	alert(mes)
	txtfld.focus();
	txtfld.select();
	return true;
	}
	
	return false
}
var dge=document.getElementById;
function go1(vall)
{
stat=vall
//alert(stat)
if (stat =='yes') 
 cl_expcol('lff_AdditionalIncome',true);
else  cl_expcol('lff_AdditionalIncome',false);
 
}
function cl_expcol(a,b){
  frm=document.loanForm;
  
  if(!dge)return;
    if(b)document.getElementById('hc_additionalIncome').style.display = 'none';
	else document.getElementById('hc_additionalIncome').style.display = 'block';
}