[minorgod]

I don't think it matters where you put the Overture code. From looking at the code, it should work anywhere in your order_message.tpl. I have gotten both Overture and advanced Google conversion code. It has been working fine for us within the body of the page. Here's what my order_message.tpl looks like, but keep in mind this is from X-Cart 3.3.x branch and I have taken the liberty of removing our tracking IDs from this code and replaced with "your_tracking_id_here":

{* $Id: order_message.tpl,v 1.18 2002/10/17 13:54:56 zorg Exp $ *}
{* assign a grand_total variable to hold the order total for advanced google conversion tracking by brett *}
{assign var="grand_total" value="0"}
{literal}
<SCRIPT LANGUAGE="JavaScript">
<!-- Overture Services Inc. 07/15/2003
var cc_tagVersion = "1.0";
var cc_accountID = "your_tracking_id_here";
var cc_marketID =  "0";
var cc_protocol="http";
var cc_subdomain = "convctr";
if(location.protocol == "https:")
{
    cc_protocol="https";
     cc_subdomain="convctrs";
}
var cc_queryStr = "?" + "ver=" + cc_tagVersion + "&aID=" + cc_accountID + "&mkt=" + cc_marketID +"&ref=" + escape(document.referrer);
var cc_imageUrl = cc_protocol + "://" + cc_subdomain + ".overture.com/images/cc/cc.gif" + cc_queryStr;
var cc_imageObject = new Image();
cc_imageObject.src = cc_imageUrl;
// -->
</SCRIPT>
{/literal}
{include file="location.tpl" last_location=$lng.lbl_order_processed last_url="cart.php"}
{capture name=dialog}



<font class=ProductDetails>{$lng.txt_order_placed}</font>




<font class=ProductDetails>{$lng.txt_order_placed_msg}</font>



{/capture}
{include file="dialog.tpl" title=$lng.lbl_confirmation content=$smarty.capture.dialog extra="width=100%"}



{capture name=dialog}
{section name=oi loop=$orders}
<pre>
<font>
{include file="mail/order_invoice.tpl" products=$orders[oi].products giftcerts=$orders[oi].giftcerts userinfo=$orders[oi].userinfo order=$orders[oi].order}
</font>
</pre>
<hr size=1 noshade>
{assign var="temp_order" value="$orders[oi].order}
{assign var="grand_total" value=$temp_order[total]+$grand_total}
{/section}


<script language="JavaScript">
<!--
google_conversion_id = your_tracking_id_here;
google_conversion_language = "en_US";
grand_total = {$grand_total};
{literal}
if (grand_total) {
  google_conversion_value = grand_total;
}
{/literal}
google_conversion_label = "Purchase";
-->
</script>
{literal}
<script language="JavaScript" src="https://www.googleadservices.com/pagead/conversion.js">
{/literal}
</script>
<noscript>
<a href="https://services.google.com/sitestats/en_US.html" target=_blank>
[img]https://www.googleadservices.com/pagead/conversion/1234567890/?value={$grand_total}&label=Purchase&hl=en[/img]
</a>
</noscript>		    
{/capture}
{include file="dialog.tpl" title=$lng.lbl_invoice content=$smarty.capture.dialog extra="width=100%"}

For overture, I just pasted the code inside some literals. For Google, I'm just doing a loop throught the orders and totaling them with Smarty, then substituting the $grand_total into the Google Javascript code. This way you can track the actual value of each conversion in Google. I just upgraded to this advanced tracking today, so the code isn't tested yet, but it should work fine.