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 addtoCart(idstring,value) { 
var cookieExpires = new Date();
cookieExpires.setTime(cookieExpires.getTime() + (1 * 60 * 60 * 1000 ));
getCookie('Palgrave') ? tmpCookie = getCookie('Palgrave') : tmpCookie = "";
if (value=="") {value=1}; // set value at 1
tmpCookie += idstring + "|" + value + ";"; 
setCookie('Palgrave', tmpCookie, cookieExpires, '/');
//window.location.reload(false);
getSummary();
thisVal="";
}

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();
// create two dimensional 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];
}
return mdArray;
} 


function getSummary() {

var thisTotal = document.getElementById("total");
var thisNumItems = document.getElementById("items");

// var total = getTotal();
var tmp = splitCookie('Palgrave');
var total = 0;

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

//var items = getNumItems();
var tmp2 = splitCookie('Palgrave');
var items = 0;
for (var i=0;i<tmp2.length;i++) {
items+=Number(tmp[i][4]);
}

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

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


}

function num2money(n_value) {

	// validate input
	if (isNaN(Number(n_value)))
		return 'ERROR';

	// save the sign
	var b_negative = Boolean(n_value < 0);
	n_value = Math.abs(n_value);
	
	// round to 1/100 precision, add ending zeroes if needed
	var s_result = String(Math.round(n_value*1e2)%1e2 + '00').substring(0,2);

	// separate all orders
	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;
	}
	// add at least one integer digit
	if (b_first)
		s_result = '0.' + s_result;
	
	// apply formatting and return
	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") {
var fix = tmp[i][2].substring(1);
total+=(Number(fix)*Number(tmp[i][4]));
}
}
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];
if (detailsSplit[4]=="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[5];
document.forms['SubmitOrder'].PostalCity.value = detailsSplit[6];
document.forms['SubmitOrder'].PostalState.value = detailsSplit[7];
document.forms['SubmitOrder'].PostalCode.value = detailsSplit[8];
document.forms['SubmitOrder'].PhoneNumber.value = detailsSplit[9];
document.forms['SubmitOrder'].CustomField_3.value = detailsSplit[10];
document.forms['SubmitOrder'].EmailAddress.value = detailsSplit[11];
var listingType = document.forms['SubmitOrder'].elements['ContactType'];
for (i=0; i < listingType.length; i++) {
if (listingType[i].value==detailsSplit[12])
{
listingType[i].selected=true
}
}
document.forms['SubmitOrder'].Remember.checked = true;
}
}

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\s]/;
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 ( 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 and spaces.");
return 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 (!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 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; 
}
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 (!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 (!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";
self.scrollTo(0, 0)
}
//yes
function showPrevLayer(currentLayer)
{
document.getElementById("Step" + currentLayer + "Layer").style.visibility = "hidden";
document.getElementById("Step" + (--currentLayer) + "Layer").style.visibility= "visible";
self.scrollTo(0, 0)
}

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.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 cookieExpires = new Date();
    cookieExpires.setTime(cookieExpires.getTime() + (10 * 365 * 24 * 1 * 60 * 60 * 1000 ));
    setCookie('PalgraveDetails', detailsCookie, cookieExpires, '/');
  }
  else { // delete cookie
    delCookie('PalgraveDetails','/')
  }
}

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
}