Variables needed for Javascript - order tracking

[smartmomma]

Does anyone know how I should fill out this javascript on my tpl_checkout_success_default page? What variables does zencart use to define order id, order amt, category id, cat name, product id, and product name?

<script language="JavaScript">
var merchant_id = '415731'
var order_id = 'PUT_YOUR_DATA_HERE'
var order_amt = 'PUT_YOUR_DATA_HERE'
var category_id = 'PUT_YOUR_DATA_HERE'
var category_name = 'PUT_YOUR_DATA_HERE'
var product_id = 'PUT_YOUR_DATA_HERE'
var product_name = 'PUT_YOUR_DATA_HERE'
</script>