Hi, Does anyone know anything about simpleCart(js)?

simpleCart(js) - Javascript Shopping Cart by The Wojo Group

My only problem with it seems to be -
How do you adjust the code so the user can order an item in a different size and be charged the relevant price?
It seems to accomodate for pricing different sizes regarding shipping but not changing the actual price of different size items.
Im sure it may just a case of changing the code somehow.

Here is the HTML:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-US">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>simpleCart(JS) 2.0 Demo </title>

<script type="text/javascript" src="simpleCart.js"></script>
<script type="text/javascript">
simpleCart.email = "brett@wojodesign.com";
simpleCart.checkoutTo = PayPal;
// simpleCart.merchantId = "118575326044237";
// simpleCart.checkoutTo = GoogleCheckout;
simpleCart.currency = USD;
// simpleCart.currency = GBP;
// simpleCart.currency = EUR;
simpleCart.taxRate = 0.08;
// simpleCart.shippingFlatRate = 5.25;
simpleCart.shippingQuantityRate = 1.00;
/* CartItem.prototype.shipping = function(){
if( this.size ){
switch( this.size.toLowerCase() ){
case 'small':
return this.quantity * 10.00;
case 'medium':
return this.quantity * 12.00;
case 'large':
return this.quantity * 15.00;
case 'bull':
return 45.00;
default:
return this.quantity * 5.00;
}
}
};
*/

simpleCart.cartHeaders = ["Thumb_image_noHeader", "Name" , "Size_input_div_div", "Price" , "decrement_noHeader" , "Quantity", "increment_noHeader", "remove_noHeader", "Total" ];
</script>

<style >

.itemContainer{
width:100%;
float:left;
}

.itemContainer div{
float:left;
margin: 5px 20px 5px 20px ;
}

.itemContainer a{
text-decoration:none;
}

.cartHeaders{
width:100%;
float:left;
}

.cartHeaders div{
float:left;
margin: 5px 20px 5px 20px ;
}


</style>
</head>
<body>
<p>
Cart: <span class="simpleCart_total"></span> (<span class="simpleCart_quantity"></span> items)
<br />
<a href="javascript:;" class="simpleCart_empty">empty cart</a>
<br />
</p>


<ul>
<li class="simpleCart_shelfItem">
<h2 class="item_name">Zebra</h2>
<img class="item_thumb" src="e.png" />
<span class="item_price">$187.95</span>
<select class="item_Size">
<option value="Small">Small</option>
<option value="Medium">Medium</option>
<option value="Large">Large</option>
</select>
<input type="hidden" class="item_shipping" value="20" />
<input type="text" class="item_quantity" value="1" />
<input type="button" class="item_add" value="add to cart" />
</li>


<li class="simpleCart_shelfItem">
<h2 class="item_name">Cow</h2>
<img class="item_thumb" src="e.png" />
<span class="item_price">$18.00</span>
<select class="item_Size">
<option value="Tiny">Tiny</option>
<option value="Medium">Medium</option>
<option value="Bull">Bull</option>
</select>
<input type="text" class="item_quantity" value="1" />
<input type="button" class="item_add" value="add to cart" />
</li>



<li>
<h2>Baby Lion</h2>
<div>$34.95</div>
<a href="javascript:;" onclick="simpleCart.add('name=baby lion', 'price=34.95','size=tiny','quantity=1','thumb=e.png');" >add to cart</a>
</li>

</ul>

<div class="simpleCart_items" >
</div>


<br />
SubTotal: <span class="simpleCart_total"></span> <br />
Tax: <span class="simpleCart_taxCost"></span> <br />
Shipping: <span class="simpleCart_shippingCost"></span> <br />
-----------------------------<br />
Final Total: <span class="simpleCart_finalTotal"></span> <br />

<a href="javascript:;" class="simpleCart_checkout">checkout</a>
</body>
</html>


And here is the JS:

/****************************************************************************
Copyright (c) 2009 The Wojo Group

thewojogroup.com
simplecartjs.com
http://github.com/thewojogroup/simpl...js/tree/master

The MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

var NextId=1,Custom="Custom",GoogleCheckout="GoogleCheckout",PayPal="PayPal",Email="Email",AustralianDollar=AUD="AUD",CanadianDollar=CAD="CAD",CzechKoruna=CZK="CZK",DanishKrone=DKK="DKK",Euro=EUR="EUR",HongKongDollar=HKD="HKD",HungarianForint=HUF="HUF",IsraeliNewSheqel=ILS="ILS",JapaneseYen=JPY="JPY",MexicanPeso=MXN="MXN",NorwegianKrone=NOK="NOK",NewZealandDollar=NZD="NZD",PolishZloty=PLN="PLN",PoundSterling=GBP="GBP",SingaporeDollar=SGD="SGD",SwedishKrona=SEK="SEK",SwissFranc=CHF="CHF",USDollar=USD="USD";
function Cart(){

var me = this;
/* member variables */
me.Version = '2.0.1';
me.Shelf = new Shelf();
me.items = {};
me.isLoaded = false;
me.pageIsReady = false;
me.quantity = 0;
me.total = 0;
me.taxRate = 0;
me.taxCost = 0;
me.shippingFlatRate = 0;
me.shippingTotalRate = 0;
me.shippingQuantityRate = 0;
me.shippingRate = 0;
me.shippingCost = 0;
me.currency = USD;
me.checkoutTo = PayPal;
me.email = "";
me.merchantId = "";
me.cartHeaders = ['Name','Price','Quantity','Total'];
/*
cart headers:
you can set these to which ever order you would like, and the cart will display the appropriate headers
and item info. any field you have for the items in the cart can be used, and 'Total' will automatically
be price*quantity.

there are keywords that can be used:

1) "_input" - the field will be a text input with the value set to the given field. when the user
changes the value, it will update the cart. this can be useful for quantity. (ie "Quantity_input")

2) "increment" - a link with "+" that will increase the item quantity by 1

3) "decrement" - a link with "-" that will decrease the item quantity by 1

4) "remove" - a link that will remove the item from the cart

5) "_image" or "Image" - the field will be an img tag with the src set to the value. You can simply use "Image" if
you set a field in the items called "Image". If you have a field named something else, like "Thumb", you can add
the "_image" to create the image tag (ie "Thumb_image").

6) "_noHeader" - this will skip the header for that field (ie "increment_noHeader")


*/




/******************************************************
add/remove items to cart
******************************************************/

me.add = function () {
var me=this;
/* load cart values if not already loaded */
if( !me.pageIsReady ) {
me.initializeView();
me.update();
}
if( !me.isLoaded ) {
me.load();
me.update();
}

var newItem = new CartItem();

/* check to ensure arguments have been passed in */
if( !arguments || arguments.length === 0 ){
error( 'No values passed for item.');
return;
}
var argumentArray = arguments;
if( arguments[0] && typeof( arguments[0] ) != 'string' && typeof( arguments[0] ) != 'number' ){
argumentArray = arguments[0];
}

newItem.parseValuesFromArray( argumentArray );
newItem.checkQuantityAndPrice();

/* if the item already exists, update the quantity */
if( me.hasItem(newItem) ) {
var id=me.hasItem(newItem);
me.items[id].quantity= parseInt(me.items[id].quantity,10) + parseInt(newItem.quantity,10);
} else {
me.items[newItem.id] = newItem;
}

me.update();
};


me.remove = function( id ){
var tempArray = {};
for( var item in this.items ){
if( item != id ){
tempArray[item] = this.items[item];
}
}
this.items = tempArray;
};

me.empty = function () {
simpleCart.items = {};
simpleCart.update();
};

/******************************************************
item accessor functions
******************************************************/

me.find = function (criteria) {
if( !criteria )
return null;
var results = [];
for( var next in me.items ){
var item = me.items[next],
fits = true;
for( var name in criteria ){
if( !item[name] || item[name] != criteria[name] )
fits = false;
}
if( fits )
results.push( me.next )
}
return (results.length == 0 ) ? null : results;
}

/******************************************************
checkout management
******************************************************/

me.checkout = function() {
if( simpleCart.quantity === 0 ){
error("Cart is empty");
return;
}
switch( simpleCart.checkoutTo ){
case PayPal:
simpleCart.paypalCheckout();
break;
case GoogleCheckout:
simpleCart.googleCheckout();
break;
case Email:
simpleCart.emailCheckout();
break;
default:
simpleCart.customCheckout();
break;
}
};

me.paypalCheckout = function() {

var me = this,
winpar = "scrollbars,location,resizable,status",
strn = "https://www.paypal.com/cgi-bin/webscr?cmd=_cart" +
"&upload=1" +
"&business=" + me.email +
"&currency_code=" + me.currency,
counter = 1,
itemsString = "";


if( me.taxRate ){
strn = strn +
"&tax_cart=" + me.currencyStringForPaypalCheckout( me.taxCost );
}

for( var current in me.items ){
var item = me.items[current];

var optionsString = "";
for( var field in item ){
if( typeof(item[field]) != "function" && field != "id" && field != "price" && field != "quantity" && field != "name" && field != "shipping") {
optionsString = optionsString + ", " + field + "=" + item[field] ;
}
}
optionsString = optionsString.substring(2);

itemsString = itemsString + "&item_name_" + counter + "=" + item.name +
"&item_number_" + counter + "=" + counter +
"&quantity_" + counter + "=" + item.quantity +
"&amount_" + counter + "=" + me.currencyStringForPaypalCheckout( item.price ) +
"&on0_" + counter + "=" + "Options" +
"&os0_" + counter + "=" + optionsString;
counter++;
}

if( me.shipping() != 0){
itemsString = itemsString + "&item_name_" + counter + "=Shipping" +
"&item_number_" + counter + "=" + counter +
"&quantity_" + counter + "=1" +
"&amount_" + counter + "=" + me.currencyStringForPaypalCheckout( me.shippingCost );
}


strn = strn + itemsString ;
window.open (strn, "paypal", winpar);
};

me.googleCheckout = function() {
var me = this;
if( me.currency != USD && me.currency != GBP ){
error( "Google Checkout only allows the USD and GBP for currency.");
return;
} else if( me.merchantId === "" || me.merchantId === null || !me.merchantId ){
error( "No merchant Id for google checkout supplied.");
return;
}

var form = document.createElement("form"),
counter = 1;
form.style.display = "none";
form.method = "POST";
form.action = "https://checkout.google.com/api/checkout/v2/checkoutForm/Merchant/" +
me.merchantId;
form.acceptCharset = "utf-8";

for( var current in me.items ){
var item = me.items[current];
form.appendChild( me.createHiddenElement( "item_name_" + counter, item.name ) );
form.appendChild( me.createHiddenElement( "item_quantity_" + counter, item.quantity ) );
form.appendChild( me.createHiddenElement( "item_price_" + counter, item.price ) );
form.appendChild( me.createHiddenElement( "item_currency_" + counter, me.currency ) );
form.appendChild( me.createHiddenElement( "item_tax_rate_" + counter, me.taxRate ) );
form.appendChild( me.createHiddenElement( "_charset_" , "" ) );

var descriptionString = "";

for( var field in item){
if( typeof( item[field] ) != "function" &&
field != "id" &&
field != "quantity" &&
field != "price" )
{
descriptionString = descriptionString + ", " + field + ": " + item[field];
}
}
descriptionString = descriptionString.substring( 1 );
form.appendChild( me.createHiddenElement( "item_description_" + counter, descriptionString) );
counter++;
}

document.body.appendChild( form );
form.submit();
document.body.removeChild( form );
};



me.emailCheckout = function() {
return;
};

me.customCheckout = function() {
return;
};




/******************************************************
data storage and retrival
******************************************************/

/* load cart from cookie */
me.load = function () {
var me = this;
/* initialize variables and items array */
me.items = {};
me.total = 0.00;
me.quantity = 0;

/* retrieve item data from cookie */
if( readCookie('simpleCart') ){
var data = unescape(readCookie('simpleCart')).split('++');
for(var x=0, xlen=data.length;x<xlen;x++){

var info = data[x].split('||');
var newItem = new CartItem();

if( newItem.parseValuesFromArray( info ) ){
newItem.checkQuantityAndPrice();
/* store the new item in the cart */
me.items[newItem.id] = newItem;
}
}
}
me.isLoaded = true;
};



/* save cart to cookie */
me.save = function () {
var dataString = "";
for( var item in this.items ){
dataString = dataString + "++" + this.items[item].print();
}
createCookie('simpleCart', dataString.substring( 2 ), 30 );
};





/******************************************************
view management
******************************************************/

me.initializeView = function() {
var me = this;
me.totalOutlets = getElementsByClassName('simpleCart_total');
me.quantityOutlets = getElementsByClassName('simpleCart_quantity');
me.cartDivs = getElementsByClassName('simpleCart_items');
me.taxCostOutlets = getElementsByClassName('simpleCart_taxCost');
me.taxRateOutlets = getElementsByClassName('simpleCart_taxRate');
me.shippingCostOutlets = getElementsByClassName('simpleCart_shippingCost');
me.finalTotalOutlets = getElementsByClassName('simpleCart_finalTotal');

me.addEventToArray( getElementsByClassName('simpleCart_checkout') , simpleCart.checkout , "click");
me.addEventToArray( getElementsByClassName('simpleCart_empty') , simpleCart.empty , "click" );

me.Shelf.readPage();

me.pageIsReady = true;

};



me.updateView = function() {
me.updateViewTotals();
if( me.cartDivs && me.cartDivs.length > 0 ){
me.updateCartView();
}
};

me.updateViewTotals = function() {
var outlets = [ ["quantity" , "none" ] ,
["total" , "currency" ] ,
["shippingCost" , "currency" ] ,
["taxCost" , "currency" ] ,
["taxRate" , "percentage" ] ,
["finalTotal" , "currency" ] ];

for( var x=0,xlen=outlets.length; x<xlen;x++){

var arrayName = outlets[x][0] + "Outlets",
outputString;

for( var element in me[ arrayName ] ){
switch( outlets[x][1] ){
case "none":
outputString = "" + me[outlets[x][0]];
break;
case "currency":
outputString = me.valueToCurrencyString( me[outlets[x][0]] );
break;
case "percentage":
outputString = me.valueToPercentageString( me[outlets[x][0]] );
break;
default:
outputString = "" + me[outlets[x][0]];
break;
}
me[arrayName][element].innerHTML = "" + outputString;
}
}
};

me.updateCartView = function() {
var newRows = [],
x,newRow,item,current,header,newCell,info,outputValue,option,headerInfo;

/* create headers row */
newRow = document.createElement('div');
for( header in me.cartHeaders ){
newCell = document.createElement('div');
headerInfo = me.cartHeaders[header].split("_");

newCell.innerHTML = headerInfo[0];
newCell.className = "item" + headerInfo[0];
for(x=1,xlen=headerInfo.length;x<xlen;x++){
if( headerInfo[x].toLowerCase() == "noheader" ){
newCell.style.display = "none";
}
}
newRow.appendChild( newCell );

}
newRow.className = "cartHeaders";
newRows[0] = newRow;

/* create a row for each item in the cart */
x=1;
for( current in me.items ){
newRow = document.createElement('div');
item = me.items[current];

for( header in me.cartHeaders ){

newCell = document.createElement('div');
info = me.cartHeaders[header].split("_");

switch( info[0].toLowerCase() ){
case "total":
outputValue = me.valueToCurrencyString(parseFloat(item.price)*parseInt(item.quantity,10) );
break;
case "increment":
outputValue = me.valueToLink( "+" , "javascript:;" , "onclick=\"simpleCart.items[\'" + item.id + "\'].increment();\"" );
break;
case "decrement":
outputValue = me.valueToLink( "-" , "javascript:;" , "onclick=\"simpleCart.items[\'" + item.id + "\'].decrement();\"" );
break;
case "remove":
outputValue = me.valueToLink( "Remove" , "javascript:;" , "onclick=\"simpleCart.items[\'" + item.id + "\'].remove();\"" );
break;
case "price":
outputValue = me.valueToCurrencyString( item[ info[0].toLowerCase() ] ? item[info[0].toLowerCase()] : " " );
break;
default:
outputValue = item[ info[0].toLowerCase() ] ? item[info[0].toLowerCase()] : " ";
break;
}

for( var y=1,ylen=info.length;y<ylen;y++){
option = info[y].toLowerCase();
switch( option ){
case "image":
case "img":
outputValue = me.valueToImageString( outputValue );
break;
case "input":
outputValue = me.valueToTextInput( outputValue , "onchange=\"simpleCart.items[\'" + item.id + "\'].set(\'" + outputValue + "\' , this.value);\"" );
break;
case "div":
case "span":
case "h1":
case "h2":
case "h3":
case "h4":
case "p":
outputValue = me.valueToElement( option , outputValue , "" );
break;
case "noheader":
break;
default:
error( "unkown header option: " + option );
break;
}

}
newCell.innerHTML = outputValue;
newCell.className = "item" + info[0];
newRow.appendChild( newCell );
}
newRow.className = "itemContainer";
newRows[x] = newRow;
x++;
}



for( current in me.cartDivs ){

/* delete current rows in div */
var div = me.cartDivs[current];
while( div.childNodes[0] ){
div.removeChild( div.childNodes[0] );
}

for(var j=0, jLen = newRows.length; j<jLen; j++){
div.appendChild( newRows[j] );
}


}
};

me.addEventToArray = function ( array , functionCall , theEvent ) {
for( var outlet in array ){
var element = array[outlet];
if( element.addEventListener ) {
element.addEventListener(theEvent, functionCall , false );
} else if( element.attachEvent ) {
element.attachEvent( "on" + theEvent, functionCall );
}
}
};


me.createHiddenElement = function ( name , value ){
var element = document.createElement("input");
element.type = "hidden";
element.name = name;
element.value = value;
return element;
};



/******************************************************
Currency management
******************************************************/

me.currencySymbol = function() {
switch(me.currency){
case JPY:
return "&yen;";
case EUR:
return "&euro;";
case GBP:
return "&pound;";
case USD:
case CAD:
case AUD:
case NZD:
case HKD:
case SGD:
return "&#36;";
default:
return "";
}
};


me.currencyStringForPaypalCheckout = function( value ){
if( me.currencySymbol() == "&#36;" ){
return "$" + parseFloat( value ).toFixed(2);
} else {
return "" + parseFloat(value ).toFixed(2);
}
};

/******************************************************
Formatting
******************************************************/


me.valueToCurrencyString = function( value ) {
return parseFloat( value ).toCurrency( me.currencySymbol() );
};

me.valueToPercentageString = function( value ){
return parseFloat( 100*value ) + "%";
};

me.valueToImageString = function( value ){
if( value.match(/<\s*img.*src\=/) ){
return value;
} else {
return "<img src=\"" + value + "\" />";
}
};

me.valueToTextInput = function( value , html ){
return "<input type=\"text\" value=\"" + value + "\" " + html + " />";
};

me.valueToLink = function( value, link, html){
return "<a href=\"" + link + "\" " + html + " >" + value + "</a>";
};

me.valueToElement = function( type , value , html ){
return "<" + type + " " + html + " > " + value + "</" + type + ">";
};

/******************************************************
Duplicate management
******************************************************/

me.hasItem = function ( item ) {
for( var current in me.items ) {
var testItem = me.items[current];
var matches = true;
for( var field in item ){
if( typeof( item[field] ) != "function" &&
field != "quantity" &&
field != "id" ){
if( item[field] != testItem[field] ){
matches = false;
}
}
}
if( matches ){
return current;
}
}
return false;
};




/******************************************************
Cart Update managment
******************************************************/

me.update = function() {
if( !simpleCart.isLoaded ){
simpleCart.load();
}
if( !simpleCart.pageIsReady ){
simpleCart.initializeView();
}
me.updateTotals();
me.updateView();
me.save();
};

me.updateTotals = function() {
me.total = 0 ;
me.quantity = 0;
for( var current in me.items ){
var item = me.items[current];
if( item.quantity < 1 ){
item.remove();
} else if( item.quantity !== null && item.quantity != "undefined" ){
me.quantity = parseInt(me.quantity,10) + parseInt(item.quantity,10);
}
if( item.price ){
me.total = parseFloat(me.total) + parseInt(item.quantity,10)*parseFloat(item.price);
}
}
me.shippingCost = me.shipping();
me.taxCost = parseFloat(me.total)*me.taxRate;
me.finalTotal = me.shippingCost + me.taxCost + me.total;
};

me.shipping = function(){
if( parseInt(me.quantity,10)===0 )
return 0;
var shipping = parseFloat(me.shippingFlatRate) +
parseFloat(me.shippingTotalRate)*parseFloat(me.total) +
parseFloat(me.shippingQuantityRate)*parseInt(me.quantity,10),
nextItem,
next;
for(next in me.items){
nextItem = me.items[next];
if( nextItem.shipping ){
if( typeof nextItem.shipping == 'function' ){
shipping += parseFloat(nextItem.shipping());
} else {
shipping += parseFloat(nextItem.shipping);
}
}
}

return shipping;
}

me.initialize = function() {
simpleCart.initializeView();
simpleCart.load();
simpleCart.update();
};

}

/********************************************************************************************************
* Cart Item Object
********************************************************************************************************/

function CartItem() {
this.id = "c" + NextId++;
}
CartItem.prototype.set = function ( field , value ){
field = field.toLowerCase();
if( typeof( this[field] ) != "function" && field != "id" ){
if( field == "quantity" ){
value = value.replace( /[^(\d|\.)]*/gi , "" );
value = value.replace(/,*/gi, "");
value = parseInt(value,10);
} else if( field == "price"){
value = value.replace( /[^(\d|\.)]*/gi, "");
value = value.replace(/,*/gi , "");
value = parseFloat( value );
}
if( typeof(value) == "number" && isNaN( value ) ){
error( "Improperly formatted input.");
} else {
this[field] = value;
this.checkQuantityAndPrice();
}
} else {
error( "Cannot change " + field + ", this is a reserved field.");
}
simpleCart.update();
};

CartItem.prototype.increment = function(){
this.quantity = parseInt(this.quantity,10) + 1;
simpleCart.update();
};

CartItem.prototype.decrement = function(){
if( parseInt(this.quantity,10) < 2 ){
this.remove();
} else {
this.quantity = parseInt(this.quantity,10) - 1;
simpleCart.update();
}
};

CartItem.prototype.print = function () {
var returnString = '';
for( var field in this ) {
if( typeof( this[field] ) != "function" ) {
returnString+= escape(field) + "=" + escape(this[field]) + "||";
}
}
return returnString.substring(0,returnString.length-2);
};


CartItem.prototype.checkQuantityAndPrice = function() {
if( !this.price || this.quantity == null || this.quantity == 'undefined'){
this.quantity = 1;
error('No quantity for item.');
} else {
this.quantity = ("" + this.quantity).replace(/,*/gi, "" );
this.quantity = parseInt( ("" + this.quantity).replace( /[^(\d|\.)]*/gi, "") , 10);
if( isNaN(this.quantity) ){
error('Quantity is not a number.');
this.quantity = 1;
}
}

if( !this.price || this.price == null || this.price == 'undefined'){
this.price=0.00;
error('No price for item or price not properly formatted.');
} else {
this.price = ("" + this.price).replace(/,*/gi, "" );
this.price = parseFloat( ("" + this.price).replace( /[^(\d|\.)]*/gi, "") );
if( isNaN(this.price) ){
error('Price is not a number.');
this.price = 0.00;
}
}
};


CartItem.prototype.parseValuesFromArray = function( array ) {
if( array && array.length && array.length > 0) {
for(var x=0, xlen=array.length; x<xlen;x++ ){

/* ensure the pair does not have key delimeters */
array[x].replace(/||/, "| |");
array[x].replace(/\+\+/, "+ +");

/* split the pair and save the unescaped values to the item */
var value = array[x].split('=');
if( value.length>1 ){
if( value.length>2 ){
for(var j=2, jlen=value.length;j<jlen;j++){
value[1] = value[1] + "=" + value[j];
}
}
this[ unescape(value[0]).toLowerCase() ] = unescape(value[1]);
}
}
return true;
} else {
return false;
}
};

CartItem.prototype.remove = function() {
simpleCart.remove(this.id);
simpleCart.update();
};



/********************************************************************************************************
* Shelf Object for managing items on shelf that can be added to cart
********************************************************************************************************/

function Shelf(){
this.items = {};
}
Shelf.prototype.readPage = function () {
this.items = {};
var newItems = getElementsByClassName( "simpleCart_shelfItem" );
for( var current in newItems ){
var newItem = new ShelfItem();
this.checkChildren( newItems[current] , newItem );
this.items[newItem.id] = newItem;
}
};

Shelf.prototype.checkChildren = function ( item , newItem) {

for(var x=0;item.childNodes[x];x++){

var node = item.childNodes[x];
if( node.className && node.className.match(/item_[^ ]+/) ){

var data = /item_[^ ]+/.exec(node.className)[0].split("_");

if( data[1] == "add" || data[1] == "Add" ){
var tempArray = [];
tempArray.push( node );
var addFunction = simpleCart.Shelf.addToCart(newItem.id);
simpleCart.addEventToArray( tempArray , addFunction , "click");
node.id = newItem.id;
} else {
newItem[data[1]] = node;
}
}
if( node.childNodes[0] ){
this.checkChildren( node , newItem );
}
}
};

Shelf.prototype.empty = function () {
this.items = {};
};


Shelf.prototype.addToCart = function ( id ) {
return function(){
if( simpleCart.Shelf.items[id]){
simpleCart.Shelf.items[id].addToCart();
} else {
error( "Shelf item with id of " + id + " does not exist.");
}
};
};


/********************************************************************************************************
* Shelf Item Object
********************************************************************************************************/


function ShelfItem(){
this.id = "s" + NextId++;
}
ShelfItem.prototype.remove = function () {
simpleCart.Shelf.items[this.id] = null;
};


ShelfItem.prototype.addToCart = function () {
var outStrings = [],valueString;
for( var field in this ){
if( typeof( this[field] ) != "function" && field != "id" ){
valueString = "";

switch(field){
case "price":
if( this[field].value ){
valueString = this[field].value;
} else if( this[field].innerHTML ) {
valueString = this[field].innerHTML;
}
/* remove all characters from price except digits and a period */
valueString = valueString.replace( /[^(\d|\.)]*/gi , "" );
valueString = valueString.replace( /,*/ , "" );
break;
case "image":
valueString = this[field].src;
break;
default:
if( this[field].value ){
valueString = this[field].value;
} else if( this[field].innerHTML ) {
valueString = this[field].innerHTML;
} else if( this[field].src ){
valueString = this[field].src;
} else {
valueString = this[field];
}
break;
}
outStrings.push( field + "=" + valueString );
}
}

simpleCart.add( outStrings );
};



/********************************************************************************************************
* Thanks to Peter-Paul Koch for these cookie functions (JavaScript - Cookies)
********************************************************************************************************/
function createCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else var expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) === 0) return c.substring(nameEQ.length,c.length);
}
return null;
}

function eraseCookie(name) {
createCookie(name,"",-1);
}


//*************************************************************************************************
/*
Developed by Robert Nyman, Robert&#039;s talk
Code/licensing: getelementsbyclassname - A cross browser way to get elements by class name - Google Project Hosting
*/
var getElementsByClassName = function (className, tag, elm){
if (document.getElementsByClassName) {
getElementsByClassName = function (className, tag, elm) {
elm = elm || document;
var elements = elm.getElementsByClassName(className),
nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
returnElements = [],
current;
for(var i=0, il=elements.length; i<il; i+=1){
current = elements[i];
if(!nodeName || nodeName.test(current.nodeName)) {
returnElements.push(current);
}
}
return returnElements;
};
}
else if (document.evaluate) {
getElementsByClassName = function (className, tag, elm) {
tag = tag || "*";
elm = elm || document;
var classes = className.split(" "),
classesToCheck = "",
xhtmlNamespace = "http://www.w3.org/1999/xhtml",
namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
returnElements = [],
elements,
node;
for(var j=0, jl=classes.length; j<jl; j+=1){
classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
}
try {
elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
}
catch (e) {
elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
}
while ((node = elements.iterateNext())) {
returnElements.push(node);
}
return returnElements;
};
}
else {
getElementsByClassName = function (className, tag, elm) {
tag = tag || "*";
elm = elm || document;
var classes = className.split(" "),
classesToCheck = [],
elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
current,
returnElements = [],
match;
for(var k=0, kl=classes.length; k<kl; k+=1){
classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
}
for(var l=0, ll=elements.length; l<ll; l+=1){
current = elements[l];
match = false;
for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
match = classesToCheck[m].test(current.className);
if (!match) {
break;
}
}
if (match) {
returnElements.push(current);
}
}
return returnElements;
};
}
return getElementsByClassName(className, tag, elm);
};


/********************************************************************************************************
* Helpers
********************************************************************************************************/


String.prototype.reverse=function(){return this.split("").reverse().join("");};
Number.prototype.withCommas=function(){var x=6,y=parseFloat(this).toFixed(2).toString().reverse();while(x<y.length){y=y.substring(0,x)+","+y.substring(x);x+=4;}return y.reverse();};
Number.prototype.toCurrency=function(){return(arguments[0]?arguments[0]:"$")+this.withCommas();};


/********************************************************************************************************
* error management
********************************************************************************************************/

function error( message ){
try{
console.log( message );
}catch(err){
// alert( message );
}
}


var simpleCart = new Cart();

if( typeof jQuery !== 'undefined' ) $(document).ready(function(){simpleCart.initialize();});
else if( typeof Prototype !== 'undefined') Event.observe( window, 'load', function(){simpleCart.initialize();});
else window.onload = simpleCart.initialize;






Im working on it myself but any help would be appreciated.
Thank You
Alan.