Tracking Code placement - Shopzilla

[crazycucumber]

Hi ,
My Cart uses Worldpay , therefore the page that the customer comes back to on success is first the WorldPay Accept page , not until they click continue do they get the built in checkout_Success page. Not all of our customers do this , and either simply logoff or navigate away from the page.

Therefore if I put my Tracking code in Checkout_Success it does not always get run , can I put this in the WP_Accept Template page or somewhere else ? , and if so does it matter where in the page ?

The code is quite simple :

<script language="javascript">
<!--
	/* Performance Tracking Data */
	var mid            = '';
	var cust_type      = '';
	var order_value    = '';
	var order_id       = '';
	var units_ordered  = '';
//-->
</script>
<script language="javascript" src="https://www.shopzilla.com/css/roi_tracker.js"></script>

thanks for any help.