Creates a call-to-action banner with image, title, text, and button
Parameters
imageURL = URL of the banner image
title = Banner title
text = Description text for the CTA
ctaText = Text for the call-to-action button
ctaURL = URL the button links to
[{CTABanner imageURL="/OpenForum/Images/open-forum-dog-small.png" title="Call To Action" text="A description of the CTA" ctaText="Click Me" ctaURL="http://www.bbc.co.uk"}]