ajax dynamic combo

[thompom]

hi - have managed to get the following code
to work with my data
it consists of a make combo and a model combo
when a user selects a make the respective models are displayed.
this is different to what ive done before because it uses ajax to do the lookup.

i need to add more columns to the model combo.
at the moment it has
Model
Price

i need it to display
Model
Price
Colour
Regyear

Make combo

<%
lst_x_makeid = "<select id='x_makeid' name='x_makeid' onChange='EW_ajaxupdatecombo(this.form.x_modelid, this.options[this.selectedIndex].value);'>"
lst_x_makeid = lst_x_makeid & "<option value=''>Please Select</option>"
sSqlWrk = "SELECT `Make` FROM `stock`"
If x_makeid = "" Or IsNull(x_makeid) Then
	sSqlWrk = sSqlWrk & " WHERE 0=1"
Else
	sSqlWrk = sSqlWrk & " WHERE `Make` = '" & AdjustSql(x_makeid) & "'"
End If
Set rswrk = Server.CreateObject("ADODB.Recordset")
rswrk.Open sSqlWrk, conn, 1, 2
If Not rswrk.Eof Then
	datawrk = rswrk.GetRows
	rowswrk = UBound(datawrk, 2)
	For rowcntwrk = 0 To rowswrk
		lst_x_makeid = lst_x_makeid & "<option value='" & datawrk(0, rowcntwrk) & "'"
		If CStr(datawrk(0, rowcntwrk)&"") = CStr(x_makeid&"") Then
			lst_x_makeid = lst_x_makeid & " selected"
		End If
		lst_x_makeid = lst_x_makeid & ">" & datawrk(0, rowcntwrk) & "</option>"
	Next
End If
rswrk.Close
Set rswrk = Nothing
lst_x_makeid = lst_x_makeid & "</select>"
Response.Write lst_x_makeid
sSqlWrk = "SELECT `Make` FROM `stock`"
sSqlWrk = sSqlWrk & " GROUP BY make ORDER BY `Make` Asc"
sSqlWrk = EW_Encode(TEAencrypt(sSqlWrk, EW_RANDOM_KEY))
%>
<input type="hidden" name="s_x_makeid" value="<%= sSqlWrk %>">
<input type="hidden" name="lc_x_makeid" value="1">
<input type="hidden" name="ld1_x_makeid" value="0">
<input type="hidden" name="ld2_x_makeid" value="-1">

Model combo

<%
lst_x_modelid = "<select id='x_modelid' name='x_modelid'>"
lst_x_modelid = lst_x_modelid & "<option value=''>Please Select</option>"

lst_x_modelid = lst_x_modelid & "</select>"
Response.Write lst_x_modelid
sSqlWrk = "SELECT `VehicleID`, model, `Price` FROM `stock`"
'left(Products.ProductName+SPACE(40),40)+Suppliers.CompanyName as Name, 
sSqlWrk = sSqlWrk & " WHERE (`Make`='@FILTER_VALUE')"
sSqlWrk = sSqlWrk & " ORDER BY `Model` Asc"
sSqlWrk = EW_Encode(TEAencrypt(sSqlWrk, EW_RANDOM_KEY))
%>
<input type="hidden" name="s_x_modelid" value="<%= sSqlWrk %>">
<input type="hidden" name="lc_x_modelid" value="3">
<input type="hidden" name="ld1_x_modelid" value="1">
<input type="hidden" name="ld2_x_modelid" value="2">

javascript function EW_ajaxupdatecombo

// Update a combobox with filter value by AJAX
// object_value_array format
// object_value_array[n] = option value
// object_value_array[n+1] = option text 1
// object_value_array[n+2] = option text 2
function EW_ajaxupdatecombo(obj, filter_value) {
	if (!(document.getElementsByTagName || document.all))
		return;
	try {
		var value = (obj.selectedIndex > -1) ? obj.options[obj.selectedIndex].value : null;
		for (var i = obj.length-1; i > 0; i--) {
			obj.options[i] = null;
		}
		var s = eval('obj.form.s_' + obj.name + '.value');
		//var s = eval('s_' + obj.name);
		//if (!s || s == '' || filter_value == '') return;
		if (!s || s == '') return;
		var lc = eval('obj.form.lc_' + obj.name + '.value');
		if (!lc || lc == '') return;
		var ld1 = eval('obj.form.ld1_' + obj.name + '.value');
		if (!ld1 || ld1 == '') return;
		var ld2 = eval('obj.form.ld2_' + obj.name + '.value');
		if (!ld2 || ld2 == '') return;
		var xmlHttp = EW_createXMLHttp();
		if (!xmlHttp) return;		
		xmlHttp.open('get', EW_LookupFn + '?s=' + s + '&q=' + encodeURIComponent(filter_value) +
			'&lc=' + encodeURIComponent(lc) +
			'&ld1=' + encodeURIComponent(ld1) +
			'&ld2=' + encodeURIComponent(ld2));
		xmlHttp.onreadystatechange = function() {
			//alert(xmlHttp.responseText);					
			if (xmlHttp.readyState == 4 && xmlHttp.status == 200 &&
				xmlHttp.responseText) {
				//alert(xmlHttp.responseText);
				var object_value_array = xmlHttp.responseText.split('\r');
				for (var j=0; j<object_value_array.length-2; j=j+3) {
					EW_newopt(obj, object_value_array[j], object_value_array[j+1],
						object_value_array[j+2]);
				}
				EW_selectopt(obj, value);
			}
		}		
		xmlHttp.send(null);
	}	catch (e) {}
}