Variable list option

// Master List of Lists
// Each entry in this object listeral is the name of an assembly,
// The associated value is the item list, where each item is a name value pair, [<Part>,<Price>] 
var oAssemblyParts = { 
                       Chasis: [ ["-","None"], ["Rear Bracket",205.95], ["Front Bracket",185.95], ["Long Support",44.95],["Front Bearing",48.95]],
                       Clutch: [ ["-","None"], ["Plate 1",15.95], ["Plate 2",22.95], ["Inside Shaft",44.95],["Outside Shaft",32.95]],
                       Brake:  [ ["-","None"], ["Master Cylindar",139.95], ["Slave Cylindar",85.95], ["Pad",15.95], ["High Presure line",22.95]],
                       Coolant:[ ["-","None"], ["Pump",35.95], ["Thermostat",19.95], ["Coolant Line",8.95],["Reservoir",17.95]]
                     };        
 
//********************************
// All of the functions below are made "Row" generic, i.e. they work no matter
// which row the field is on that calls the function.  This is done by pre-fixing
// each of the field names with the row name. The row name can then be extracted 
// from the name of the field that calls the function and used to acquire other 
// fields on the same row.
 
////////////////
// SetPartEntries()
//
// Function for setting the parts list based on the assmebly selection value
//
// This function is specifically setup to be called from the Change Event
// of the Assembly List.  It will not work from another event because the 
// "event.value" parameter is used
//
function SetPartEntries()
{
   // Only run this code on when the selection is commited.  
   if(event.willCommit)
   {
      // There are 3 rows in the order form so in order to use other fields in 
      // the same row we first have to acquire the name of the row
      // we are operating on.  This is part of the List field's name, so we 
      // just have to split it off 
      var cRowName = event.target.name.split(".").shift();
 
      // Now get the new parts list from the Master List
      // Since the selection is being committed, event.value contains the selection text
      var lst = oAssemblyParts[event.value];
      // If an entry is selected that we don't have a parts list for, then
      // the parts list is just cleared. 
      if( (lst != null) && (lst.length > 0) )
         this.getField(cRowName + ".PartSelect").setItems(lst);
      else
      {
         this.getField(cRowName + ".PartSelect").clearItems();
      }
 
      // We have a new parts lists and the first entry is 
      // is a non-selection.  so clear the price field.
      this.getField(cRowName + ".Price").value = 0;
   }
}
 
 
////////////////
// SetPriceValue()
//
// Function for setting the price value based on the Parts selection value
//
// This function is specifically setup to be called from the Change Event
// of the Parts List.  It will not work from another event because the 
// "event.willCommit" and "event.changeEx" parameters are used
//
function SetPriceValue()
{
   // Only run this code on the un-committed change.  This fields is set up 
   // for Commit on select so we know the value will be committed
   if(!event.willCommit)
   {
      var cRowName = event.target.name.split(".").shift();
 
      // If the export value is Not a Number then 
      // set the price to zero.
      var nSelExp = 0;
      if(!isNaN(event.changeEx))
        nSelExp = event.changeEx
 
      this.getField(cRowName + ".Price").value = nSelExp;
   }
}
 
 
////////////////
// DoTotalCalculation()
//
// Function for calculating the total.  While this is a simple calculation
// putting it in a document level function instead of each individual total 
// field means that it only has to be entered once and is updated in only a 
// single location (i.e., if we have to make modifications)
//
function DoTotalCalculation()
{
   var cRowName = event.target.name.split(".").shift();
   event.value = this.getField(cRowName + ".Price").value * this.getField(cRowName + ".Quantity").value;
}