The banner might have to temporarily disappear until I can work out an issue I've caused.
I tried to add in some code so the banner only displayed on screens with a 600px width or wider so that it didn't muck up the site on a mobile, but I managed to apply that to every image, so no images work in mobile right now.
This is a slight issue because, believe it or not, we had someone try and register on a mobile device earlier!!! But the verification image did not appear so it was impossible for them to progress.
The banner can stay, I've worked out how to only apply the script to specific images. I might be rubbish at the promotional side, but I'm slowly getting to grips with the config!