I am trying to get details of which items have been fulfilled in a particular sales order from the Item Fulfillment form.  The idea is that when additional items are being added to an order, we want to go back and check which of the original items on the order have been fulfilled.

I have attached a script to a custom Item Fulfillment form and the script that I am using to check how we get the different bits of information looks something like this:

function Fulfillment_pageInit()  {      /*     * This gets the id of the sales order that is being fulfilled     */    var salesOrderId = nlapiGetField('createdfrom').uifield.value;    var salesOrder = nlapiLoadRecord('salesorder', salesOrderId);      var numOrderLineItems = salesOrder.getLineItemCount('item');      var orderSummary = '';        /*     * Here we are going through each item in the original order (not the fulfillment) and getting the item details     */    for (i=1; i<=numOrderLineItems; i++)    {      orderSummary += 'Line ' + i + '(' + salesOrder.getLineItemValue('item', 'item', i) + ')' + ' has a quantity of ' + salesOrder.getLineItemValue('item', 'quantity', i) + "n";      orderSummary += salesOrder.getLineItemValue('item', 'quantitybackordered', i) + " have already been back