Adding Async Head Code to vBulletin 4

[stuarttunstall]

Hi

I am looking at implementing a new advertising package on the site to replace Google Adsense (long story) but I need to add the async head code in addition to the banner codes...

Where would I add this code? This is the "async head code" does it go at the bottom of the header_includes template?

The code is

<script type="text/javascript">
window._mNHandle = window._mNHandle || {};
window._mNHandle.queue = window._mNHandle.queue || [];
medianet_versionId = "3xxxxxx";
</script>
<script src="https://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" async="async"></script>

Thanks

Stuart