Shopping.com ROI tracking code

The shopping.com service says to add this code to our check-out...

<script language="JavaScript">
var merchant_id = 'XXXXXX'
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>
<script language="JavaScript" src="https://stat.DealTime.com/ROI/ROI.js?mid=XXXXXX"></script>

Note: In the code, I changed our merchant ID to XXXXXX.

I assume that I would use <%=getCurrentAttribute('confirmation','total')%> to the right of "var order_amt =" in place of 'PUT_YOUR_DATA_HERE'.  Then we would do the same with the other variables, but use the proper matching NS variables.  Then I figured, why re-invent the wheel if somebody else has already customized this code for NS.