function changeInnerBuy(innerID,value,isbn) {
   if (value=="") {value=1}; // set value at 1
   var thisID = eval(innerID);
   var thistext =  '<img src="templates/shoppingcart/$file/MS_icon_added.gif" align="absmiddle">&nbsp;' + value + '<br><a onClick="removefromCart(\'' + isbn + '\')" style="cursor:hand"><img src="templates/shoppingcart/$file/MS_button_remove.gif" align="absmiddle"></a>';
   thisID.innerHTML = thistext;
}

function changeInnerInspect(innerID,isbn) {
       var thisID = eval(innerID);
       var thistext =  '<img src="templates/shoppingcart/$file/MS_icon_inspect_on.gif" align="absmiddle">&nbsp;1<br><a onClick="removefromCart(\'' + isbn + '\')" style="cursor:hand"><img src="templates/shoppingcart/$file/MS_button_remove.gif" align="absmiddle"></a>';
       thisID.innerHTML = thistext;
}

function cartHasUnavailable()
{
    var oCookie = getCookie('Palgrave') ? getCookie('Palgrave').split(';') : false;
    
    if(oCookie == false )return false;
    
    for(var i = 0; i < oCookie.length; i++)
    {
        var splitCookie = oCookie[i].split('|');
        if(typeof splitCookie[4] != 'undefined' && splitCookie[4] == 'NA')return true;
    }
    return false;
}


function addtoCart(idstring,value,innerId,inspect) 
{ 
    if (value=="") {value=1}; // set value at 1
    var bookIsbn = idstring.split('|')[0];
    var bookTitle = idstring.split('|')[1];
    var availability = idstring.split('|')[4]; 
       
    var priceAvailability = new PriceAvailability(bookIsbn,value);
    
    var message = null;
  
    if((availability == 'NA' && (!priceAvailability.available) && cartHasUnavailable() == false)
        || (availability == 'A' && (!priceAvailability.available)))
    {
    //    message = 'Items not in stock are added to the shopping cart as book requests.  The cost of these items is not included in the debit amount when paying by credit card from the website.  Our Sales department will contact customers when processing book requests in order to estimate availability of items not in stock.';
    }
    
    //if book not available change its availability status
    
/*
    if(!priceAvailability.available)
    {
        var idstringSplit = idstring.split('|');
        idstringSplit[idstringSplit.length - 1] = 'NA';
        idstring = idstringSplit.join('|');
    }
*/
    
    var cookieExpires = new Date();
    cookieExpires.setTime(cookieExpires.getTime() + (1 * 60 * 60 * 1000 ));
    getCookie('Palgrave') ? tmpCookie = getCookie('Palgrave') : tmpCookie = "";        
    tmpCookie += idstring + "|" + value + ";"; 
    setCookie('Palgrave', tmpCookie, cookieExpires, '/');
    
    //window.location.reload(false);
    getSummary();
    
    if(inspect)
    {
        var thistext =  '<img src="templates/shoppingcart/$file/MS_icon_inspect_on.gif" align="absmiddle">&nbsp;1<br><a onClick="removefromCart(\'' + bookIsbn + '\')" style="cursor:hand"><img src="templates/shoppingcart/$file/MS_button_remove.gif" align="absmiddle"></a>';
    } else {
                var thistext =  '<img src="templates/shoppingcart/$file/MS_icon_added.gif" align="absmiddle">&nbsp;' + value + '<br><a onClick="removefromCart(\'' + bookIsbn + '\')" style="cursor:hand"><img src="templates/shoppingcart/$file/MS_button_remove.gif" align="absmiddle"></a>';
           }
    
    if(priceAvailability && (!priceAvailability.available))
    {       
        thistext += '<p class="notAvailable">' + priceAvailability.getShipDateString() + '</p>';
    }
    
    document.getElementById(innerId).innerHTML = thistext;
    thisVal="";  
          
    if(message)alert(message);
}

function removefromCart(id) { // remove single item from cart
getCookie('Palgrave') ? thisCookie = getCookie('Palgrave') : thisCookie = "";
var cookieExpires = new Date();
cookieExpires.setTime(cookieExpires.getTime() + (1 * 60 * 60 * 1000 ));
var thisCookieSplit = thisCookie.split(';');
var tmpCookie = "";
for (var i=0;i<thisCookieSplit.length-1;i++) {
var splitElement = thisCookieSplit[i].split('|');
if (splitElement[0]!=id) {
tmpCookie += thisCookieSplit[i] + ";";
}
}
setCookie('Palgrave', tmpCookie, cookieExpires, '/');
refreshWindow();
}

function refreshWindow()
{
    var sURL = unescape(window.location);
    window.location.href = sURL;
}

function splitCookie(name) 
{
    getCookie(name) ? thisCookie = getCookie(name) : thisCookie = "";
    var thisCookieSplit = thisCookie.split(';');
    var mdArray = new Array();
    for (var i=0; i < thisCookieSplit.length-1; i++) 
    {
        var splitElement = thisCookieSplit[i].split('|');
        mdArray[i] = new Array(5);
        mdArray[i][0] = splitElement[0];
        mdArray[i][1] = splitElement[1];
        mdArray[i][2] = splitElement[2];
        mdArray[i][3] = splitElement[3];
        mdArray[i][4] = splitElement[4];
        mdArray[i][5] = splitElement[5];
    }
    return mdArray;
} 


function getSummary() 
{
    var thisTotal = document.getElementById("total");
    var thisNumItems = document.getElementById("items");
    var tmp = splitCookie('Palgrave');
    var total = 0;

    for (var i=0;i<tmp.length;i++) 
    {
        if(tmp[i][3]=="B" && tmp[i][4]=="A") 
        {
            var fix = tmp[i][2].substring(1);
            total+=(Number(fix)*Number(tmp[i][5]));
        }
    }

    //var items = getNumItems();
    var tmp2 = splitCookie('Palgrave');
    var items = 0;
    for (var i=0;i<tmp2.length;i++) 
    {
        items+=Number(tmp[i][5]);
    }

    thisTotal.innerHTML = "Current total: " + num2money(total);

    thisNumItems.innerHTML = "Number of items in cart: " + items;
}

function num2money(n_value) {
if(n_value == 1)return '$1.0';
	if (isNaN(Number(n_value)))
		return 'ERROR';

	var b_negative = Boolean(n_value < 0);
	n_value = Math.abs(n_value);
	
	var s_result = String(Math.round(n_value*1e2)%1e2 + '00').substring(0,2);

	var b_first = true;
	var s_subresult;
	while (n_value > 1) {
		s_subresult = (n_value >= 1e3 ? '00' : '') + Math.floor(n_value%1e3);
		s_result = s_subresult.slice(-3) + (b_first ? '.' : ',') + s_result;
		b_first = false;
		n_value = n_value/1e3;
	}
	if (b_first)
		s_result = '0.' + s_result;
	
	return  b_negative
		? '($' + s_result + ')'
		: '$' + s_result;
}

function getTotal(type) 
{
    var tmp = splitCookie('Palgrave');
    var total = 0;
    for (var i=0;i<tmp.length;i++) 
    {
        //if(tmp[i][3]=="B" && (tmp[i][4]=="A" || (tmp[i][4]=="NA" && hasItemsInStock() == true)))
        if(tmp[i][3]=="B" && tmp[i][4]=="A") 
        //if(tmp[i][3]=="B") 
        {
            var fix = tmp[i][2].substring(1);
            total+=(Number(fix)*Number(tmp[i][5]));
        }
    }
    return total.toFixed(2);
}

function prefillForm(name) {
getCookie(name) ? getDetails = true : getDetails = false;
if (getDetails) {
detailsCookie = getCookie(name)
detailsSplit = detailsCookie.split(";");
document.forms['SubmitOrder'].Firstname.value = detailsSplit[0];
document.forms['SubmitOrder'].Lastname.value = detailsSplit[1];
document.forms['SubmitOrder'].CustomField_2.value = detailsSplit[2];
document.forms['SubmitOrder'].Organisation.value = detailsSplit[3];
document.forms['SubmitOrder'].SalesRepCode.value = detailsSplit[4];
if (detailsSplit[5]=="true") {
document.forms['SubmitOrder'].MoreInfo.checked = true;
}
else {
document.forms['SubmitOrder'].MoreInfo.checked = false;
} 
document.forms['SubmitOrder'].ContactType.defaultSelected = "Phone";
document.forms['SubmitOrder'].PostalAddress.value = detailsSplit[6];
document.forms['SubmitOrder'].PostalCity.value = detailsSplit[7];
document.forms['SubmitOrder'].PostalState.value = detailsSplit[8];
document.forms['SubmitOrder'].PostalCode.value = detailsSplit[9];
document.forms['SubmitOrder'].PhoneNumber.value = detailsSplit[10];
document.forms['SubmitOrder'].CustomField_3.value = detailsSplit[11];
document.forms['SubmitOrder'].EmailAddress.value = detailsSplit[12];
var listingType = document.forms['SubmitOrder'].elements['ContactType'];
for (i=0; i < listingType.length; i++) 
{
    if (listingType[i].value==detailsSplit[13])
    {
        listingType[i].selected=true
    }
}

//set overseas order field
var overseasOrder = document.forms['SubmitOrder'].overseasOrder;       
for(var i=0; i < overseasOrder.length; i++)
{
    if(overseasOrder[i].value == detailsSplit[14])overseasOrder[i].checked = true;
}

//set payment type
var payType = document.forms['SubmitOrder'].CustomField_4;       
for(var i=0; i < payType.length; i++)
{
    if(payType[i].value == detailsSplit[15])payType[i].checked = true;
}

document.forms['SubmitOrder'].Remember.checked = true;
}
}


function rememberDetails() {
  if (document.forms['SubmitOrder'].Remember.checked) {

    var which = document.forms['SubmitOrder'];
   
    detailsCookie = which.Firstname.value + ";"
    detailsCookie += which.Lastname.value + ";"
    detailsCookie += which.CustomField_2.value + ";"
    detailsCookie += which.Organisation.value + ";"
    detailsCookie += which.SalesRepCode.value + ";"
    detailsCookie += which.MoreInfo.checked + ";"
    detailsCookie += which.PostalAddress.value + ";"
    detailsCookie += which.PostalCity.value + ";"
    detailsCookie += which.PostalState.value + ";"
    detailsCookie += which.PostalCode.value + ";"
    detailsCookie += which.PhoneNumber.value + ";"
    detailsCookie += which.CustomField_3.value + ";"
    detailsCookie += which.EmailAddress.value + ";"
    detailsCookie += which.ContactType.value + ";"
    
    
    var oOrder = document.forms['SubmitOrder'].overseasOrder;
    for(var i=0; i < oOrder.length; i++)
    {
        if(oOrder[i].checked)var fOverseasOrder = oOrder[i].value;
    }
    detailsCookie += fOverseasOrder + ";"
    
    var payType = document.forms['SubmitOrder'].CustomField_4;
    for(var i=0; i < payType.length; i++)
    {
        if(payType[i].checked)var paymentType = payType[i].value;
    }
    detailsCookie += paymentType + ";"
    
    
    var cookieExpires = new Date();
    cookieExpires.setTime(cookieExpires.getTime() + (10 * 365 * 24 * 1 * 60 * 60 * 1000 ));
    setCookie('PalgraveDetails', detailsCookie, cookieExpires, '/');
  }
  else { // delete cookie
    delCookie('PalgraveDetails','/')
  }
}

function getRadioValue(thisElement)
  {
    var i;
    var listingType = document.forms['SubmitOrder'].elements[thisElement];
    var value = "";
    for (i=0; i < listingType.length; i++)
    {
      if (listingType[i].checked)
      {
        return listingType[i].value;
      }
    }
  }

function checkDetails() 
{
    var which = document.forms['SubmitOrder'];
    var pass=true;
    var reqfields = "Please fill in the following compulsory fields:\n";
    var regExp1 = /[^A-Za-z'\-\s]/;
    var regExp2 = /[^\d]/;
    var regExpPOBox = /(\b)(po|p o|p.o|pb|box|bag|locked|private|locked bag|ms|rmd|private bag)(\b)/;
    var reNumbersOnly = /^[0-9]+$/;
    var regEmailPattern = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;

           
    if (( regExp1.test( which.Firstname.value )) || ( regExp1.test( which.Lastname.value ))) 
    {
        alert("You have entered an invalid character in either\nthe First name or Last name field.\nPlease only use the characters A - Z, apostrophe and hyphen.");
        return false; 
    }

    if (regExpPOBox.test(which.PostalAddress.value.toLowerCase())) {
     alert('Sorry, we do not deliver to post office/private boxes.');
        return false; 
    }

    if ( regExp2.test( which.PhoneNumber.value) || regExp2.test( which.CustomField_3.value) || regExp2.test( which.PostalCode.value)) 
    {
        alert("You have entered an invalid character in either\nthe Postcode, Phone or Fax field.\n\nPlease only use numbers.");
        return false; 
    }

    if (getRadioValue('AddressType')==undefined || getRadioValue('AddressType')=='undefined') {
      reqfields += "Address type (private or institution)\n";
      pass=false;
    }

    var strCompFields = which.CompulsoryDetailsFields.value;
    for (i=0;i<which.length;i++) 
    {
        var tempobj=which.elements[i];
        if (strCompFields.indexOf(tempobj.name)!=-1) { // compulsory field
            if ((tempobj.type=="text"||tempobj.type=="textarea")&&tempobj.value=='') {
                pass=false;
                reqfields += getFormLabels(tempobj.name) + "\n";
            }
        }
    }
    if (getRadioValue('AddressType')=="2" && which.Organisation.value=="") {
     reqfields += "School name";
     pass=false;
    } 

    if (which.PostalCode.value!="" && (!reNumbersOnly.test(which.PostalCode.value) || which.PostalCode.value.length < 4 || which.PostalCode.value.length > 10)) 
    {
        pass=false;
        reqfields += "Postcode (4 to 10 numbers only)\n";
    }
    
    
    //is order to be set overseas?
    var oOrder = document.forms['SubmitOrder'].overseasOrder;
    for(var i=0; i < oOrder.length; i++)
    {
        if(oOrder[i].checked)var fOverseasOrder = oOrder[i].value;
    }    
    
    if(which.PostalState.selectedIndex == 0 && fOverseasOrder == "0")
    {
        pass=false;
        reqfields += "Postal State\n";
    }

    if (which.PhoneNumber.value!="" && (!reNumbersOnly.test(which.PhoneNumber.value) || which.PhoneNumber.value.length < 8)) 
    {
        pass=false;
        reqfields += "Phone (minimum 8 numbers only)\n";
    }

    if (!pass) 
    {
        alert(reqfields);
        return false;
    }

    var thisArrayCookie = splitCookie('Palgrave');
    var inspectFlag = '0';
    for (var i=0;i<thisArrayCookie.length;i++) 
    {
        if (thisArrayCookie[i][3] == "I") 
        {
            inspectFlag = '1';
        }
    }
    if ( inspectFlag == '0' ) 
    {
    } else {
                alert("Inspection copies may only be requested by schools");
                return false; 
           }
    
    if ( regEmailPattern.test( which.EmailAddress.value ))  
    {
    } else {
                alert("Please enter a valid email address");
                return false; 
           }
    return pass;
}

function checkDetailsSchool() {
var which = document.forms['SubmitOrder'];
var pass=true;
var reqfields = "Please fill in the following compulsory fields:\n";
var regExp1 = /[^A-Za-z'\-\s]/;
var regExp2 = /[^\d]/;
var regExpPOBox = /(\b)(po|p o|pb|p.o|box|bag|locked|private|locked bag|ms|rmd|private bag)(\b)/;
var regEmailPattern = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
var reNumbersOnly = /^[0-9]+$/;

//is order to be set overseas?
var oOrder = document.forms['SubmitOrder'].overseasOrder;
for(var i=0; i < oOrder.length; i++)
{
    if(oOrder[i].checked)var fOverseasOrder = oOrder[i].value;
}
    
if (( regExp1.test( which.Firstname.value )) || ( regExp1.test( which.Lastname.value ))) {
alert("You have entered an invalid character in either\nthe First name or Last name field.\nPlease only use the characters A - Z, apostrophe and hyphen.");
return false; 
}
if (regExpPOBox.test(which.PostalAddress.value.toLowerCase())) {
 alert('Sorry, we do not deliver to post office/private boxes.');
        return false; 
}
if ( regExp2.test( which.PhoneNumber.value) || regExp2.test( which.CustomField_3.value) || regExp2.test( which.PostalCode.value)) {
alert("You have entered an invalid character in either\nthe Postcode, Phone or Fax field.\n\nPlease only use numbers.");
return false; 
}

    if (getRadioValue('AddressType')==undefined || getRadioValue('AddressType')=='undefined') {
      reqfields += "Address type (private or institution)\n";
      pass=false;
    }

var strCompFields = which.CompulsoryDetailsSchoolFields.value;
for (i=0;i<which.length;i++) {
var tempobj=which.elements[i];
if (strCompFields.indexOf(tempobj.name)!=-1) { // compulsory field
if ((tempobj.type=="text"||tempobj.type=="textarea")&&tempobj.value=='') {
pass=false;
reqfields += getFormLabels(tempobj.name) + "\n";
}
}
}

if(which.PostalState.selectedIndex == "0" && fOverseasOrder == "0")
{
    pass=false;
    reqfields += "State\n";
}

if (which.PostalCode.value!="" && (!reNumbersOnly.test(which.PostalCode.value) || which.PostalCode.value.length < 4 || which.PostalCode.value.length > 10 || (fOverseasOrder == "0" && which.PostalCode.value.length > 4))) {
pass=false;
reqfields += "Postcode (4 to 10 numbers only)\n";
}

if (which.PhoneNumber.value!="" && (!reNumbersOnly.test(which.PhoneNumber.value) || which.PhoneNumber.value.length < 8)) {
pass=false;
reqfields += "Phone (minimum 8 numbers only)\n";
}

if (!pass) {
alert(reqfields);
return false;
}

if (isInspect) {
  var strInspect_CompFields = which.Inspect_CompulsoryDetailsFields.value;
  for (i=0;i<which.length;i++) {
  var tempobj=which.elements[i];
  if (strInspect_CompFields.indexOf(tempobj.name)!=-1) { // compulsory field
   if ((tempobj.type=="text"||tempobj.type=="textarea")&&tempobj.value=='') {
   pass=false;
   break;
   }
  }
  }

if (getRadioValue('CustomField_4')=='3') {
alert('Inspect on Approval items cannot be ordered using credit card for payment. Please select payment by invoice or remove these items.');
   return false;
}

  if (!pass) {
   alert("The Request a book inspection form is incomplete");
   return false;
  }
}

if ( regEmailPattern.test( which.EmailAddress.value )) {
}
else {
alert("Please enter a valid email address");
return false; 
}
return pass;
}

function showNextLayer(currentLayer,nextLayer)
{
    document.getElementById("Step" + currentLayer + "Layer").style.visibility = "hidden";
    document.getElementById("Step" + nextLayer + "Layer").style.visibility= "visible";
    
    if(nextLayer == 5)
    {
        document.getElementById("Step" + nextLayer + "Layer").style.display = "block";
    }
    
    
    if(getRadioValue('CustomField_4') == '5' || getRadioValue('CustomField_4') == '3')
    {
        var total = Number(getTotal());
        if ((total > 0) && getRadioValue('overseasOrder')!=1) total = total + Number(document.forms['SubmitOrder'].handlingCharge.value);
        document.getElementById('finalprice').innerHTML = '<b>Total purchase: $' + total.toFixed(2) + '</b>';
    }
    self.scrollTo(0, 0)
}
function showPrevLayer(currentLayer)
{
document.getElementById("Step" + currentLayer + "Layer").style.visibility = "hidden";
document.getElementById("Step" + (--currentLayer) + "Layer").style.visibility= "visible";
self.scrollTo(0, 0)
}

function getFormLabels(formValue) { 
strValues = "Firstname; Lastname; EmailAddress; PostalAddress; PostalCity; PostalState; PostalCode; PostalCountry; PhoneNumber; CustomField_1; CustomField_2; Organisation; CardName; CardNumber; CardMonth; CardYear; CardType; Inv_Order_Number; Card_ONumber; S_CName; S_CNumber; S_CMonth; S_CYear; S_CType";
strNames = "First name; Last name; Email address; Street address; City; State; Postcode; Country; Phone number; Account number; Position; School name; Credit card name; Credit card number; Expiry month; Expiry year; Card type; Customer Order Number; Customer Order Number; Credit card name; Credit card number; Expiry month; Expiry year; Card type";
var fromlist = strValues.split('; ');
var tolist = strNames.split('; ');
for (var i = 0; i < fromlist.length; i++ ) {
if (fromlist[i] == formValue) {
return tolist[i];
}
}
return formValue
}

function stopEvent(oEvent)
{
  if(window.event)
  { 
    var target = window.event.srcElement;
    window.event.returnValue = false;
  } else {
    var target = oEvent.target;
    oEvent.preventDefault();
  }
  return target;
}