Adsense: Insert Google Adsense Into Blogger XML Post Body

I've been searching for a way of brining up AdSense just after the body of my post. Searched high and low and most of the ways I found were not working. Finally I got it to work thanks to this post.

So if you've been managing to change the template with the AdSense code with no errors, but still get a javascript error when you view the blog, follow this post.