// JScript source code
/*****************************************************************************************************
' Modification Details
'*****************************************************************************************************
' Version          : 1.0.0
' Modified         : 29 July 2005            By : Rufen
' Document Ref     : Nil
' Reason           : 1st Release
'*****************************************************************************************************]
' Version          : 1.0.1
' Modified         : 02 August 2005            By : Rufen
' Document Ref     : Nil
' Reason           : Remove Services Type selection. Hence, no need to check for input.
'*****************************************************************************************************
' Version          : 1.0.2
' Modified         : 02 Feb 2006            By : CKK
' Document Ref     : Nil
' Reason           : Allow Name to include these characters ,'.
'*****************************************************************************************************
' Version          : 1.0.3
' Modified         : 26 Jun 2006            By : Shirley
' Document Ref     : Nil
' Reason           : Add date validation for Date of Posting field.
'*****************************************************************************************************
' Version          : 1.0.4
' Modified         : 29 Nov 2007            By : Shirley
' Document Ref     : Nil
' Reason           : Add validation: txtSdrAdd and txtRcptAdd are compulsory if enquiry on Mail or Parcel Delivery Status
'*****************************************************************************************************
*/
function checkForm()
{
	isValid = true;
	var checkLoop;
	myOption = -1;
	myOption1 = -1;
	enqValue = "";
	
	for (i=0; i<form.radioEnq.length; i++) {
		if (form.radioEnq[i].checked) {
			myOption = i;
		}
	}

	for (ii=0; ii<form.radioFor.length; ii++) {
		if (form.radioFor[ii].checked) {
			myOption1 = ii;
			enqValue = form.radioFor[ii].value;
		}
	}

	if (form.selSalut.value == ""){
		alert("Please select your salutation");
		form.selSalut.focus();
		isValid = false;
	}
	else if (form.txtName.value == ""){
		alert("Please enter your name");
		form.txtName.focus();
		isValid = false;
	}
	else if (IsValidText(form.txtName.value) == "false"){
		alert("Input Name should not have any special characters");
		form.txtName.focus();
		isValid = false;
	}
	else if (form.txtEmail.value == ""){
		alert("Please enter your email");
		form.txtEmail.focus();
		isValid = false;
	}
	else if ((form.txtEmail.value != "") && (echeck(form.txtEmail.value)== false)){
		alert("A valid email is required");
		form.txtEmail.focus();
		isValid = false;
	}
	else if (checkContact(form.txtContactNo.value)){
		if (checkContact(form.txtContactNo.value) == "valid"){
			alert("A valid contact number is required");
			form.txtContactNo.focus();
			isValid = false;		
		}
		else if (checkContact(form.txtContactNo.value) == "digit"){
			alert("8-digits is required for local number");
			form.txtContactNo.focus();
			isValid = false;
		}	
	}
	else if (myOption == -1) {
		alert("Please select the feedback / enquiry type");
		form.radioEnq[0].focus();
		isValid = false;
	}
	
	else if (myOption1 == -1) {
		alert("Please select the service you enquire about");
		form.radioEnq[0].focus();
		isValid = false;
	}

	else if (form.txtMessage.value.length == 0){
		alert("Please do not leave the message blank");
		form.txtMessage.focus();
		isValid = false;
	}
	/*else if ((myOption1 > -1  && form.txtSdrAdd.value.length == 0) && (enqValue == "mailDelivery" || enqValue == "parcelDelivery")){
		//alert(enqValue);
		alert ("Please enter the sender's name and complete address");
		form.txtSdrAdd.focus();
		isValid = false;
	}*/
	else if ((myOption1 > -1  && form.txtRcptAdd.value.length == 0) && (enqValue == "mailDelivery" || enqValue == "parcelDelivery")){
		//alert(enqValue);
		alert ("Please enter the recipient's name and complete address");
		form.txtRcptAdd.focus();
		isValid = false;
	}
	else if ((form.txtDatePost.value != "") && (isDate(form.txtDatePost.value) == false)){
	        form.txtDatePost.focus();
		isValid = false;
	}
	else{
		if (isValid){
			form.action = "feedbackProc.asp"
			form.submit();
			return true;
		}
	}
}
function checkContact(contact)
{
	var temp="";
	if (contact != ""){
		if (isNaN(contact)){
			temp="valid";
			return temp;
		}else{
			if (IsLocalNum(contact)){
				if (contact.length != 8){	
					temp="digit";
					return temp;	
				}else{
					temp = "";
					return temp;
				}
			}else{
				temp = "";
				return temp;
			}
		}
	}else{
		temp = "";
		return temp;
	}
}
function echeck(str) {
	var at="@";
	var dot=".";
	var lat=str.indexOf(at);
	var lstr=str.length;
	var ldot=str.indexOf(dot);
	if (str.indexOf(at)==-1){
		return false;
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		return false;
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false;
	}
	if (str.indexOf(at,(lat+1))!=-1){
		return false;
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false;
	}
	if (str.indexOf(dot,(lat+2))==-1){
		return false;
	}
	if (str.indexOf(" ")!=-1){
		return false;
	}
	return true;
}
function IsLocalNum(sText)
{
	var ValidChars = "689";
	var IsValid=true;
	var Char;

	for (i = 0; i < 1 ; i++)
	{
		Char = sText.charAt(i);
		if (ValidChars.indexOf(Char) == -1)
			{
			IsValid = false;
			}
	}
	return IsValid;
}
function IsValidText(strText)
{
	var ValidChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.,";
   	
	var IsValidText="true";
   	var Char;
   	
	if (strText != "")
	{
		for (i = 0; i < strText.length ; i++) 
      	
		{ 
      		
			Char = strText.charAt(i); 
      		
			if (ValidChars.indexOf(Char) == -1) 
      		
			{
				
				IsValidText = "false";
      		
			}
      	
		}
   	
	}
   return IsValidText;	
}
function textCounter(field,cntfield,maxlimit) 
{
	if (field.value.length > maxlimit) {// if too long...trim it!
		field.value = field.value.substring(0, maxlimit);
		alert('Maximum length is reached');
	// otherwise, update 'characters left' counter
	}
	else{
	cntfield.value = maxlimit - field.value.length;
	}
}

// date validation script for dd/mm/yyyy
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
    var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
    var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
    // February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date of posting format should be : dd/mm/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid date of posting")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid date of posting")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid date of posting")
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date of posting")
		return false
	}
return true
}

function promptMsg() 
{
	enqVal = "";

	for (ii=0; ii<form.radioEnq.length; ii++) {
		if (form.radioEnq[ii].checked) {
			enqVal = form.radioEnq[ii].value;
		}
	}

	if (enqVal != "compliments")
	{
		alert("To track Registered articles or Speedpost parcels, please click on their quick links under Self-Help. Please be informed that for ordinary mail (non-registered) and non-Speedpost parcels, there is no tracking service.");
	}
}