Inject HTML On MVC Master Page?

I have a simple, but probably common problem on how to inject HTML inside an ASP.NET MVC master page. I have a google analytics tracking code that sits on my master page. The code looks like this:

var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXX-1']);
_gaq.push(['_trackPageview']);
// need to inject ecommerce code here
(function () {
// google analytics code here
})();

I'm using ecommerce tracking and I want to inject the "cart" information in side this HTML on the receipt page (and ONLY on this page). So I do something like this:

var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXX-1']);
_gaq.push(['_trackPageview']);
<% if(ViewData["googleanalytics"]!=null) {%>
<%= ViewData["googleanalytics"] %>
<% } %>
(function () {
// google analytics code here
})();

Then in the controller, I have code that looks like this:

[HttpGet]
public ActionResult Receipt()
{
var receipt = // get receipt model
// get google analytics javascript. This function pulls
// the data from the receipt model
ViewData["googleanalytics"] = GetAnalyticsInfo(receipt);
return View(receipt);
}