Donald, I'm assuming it's not ok to use these images in my online implementation?
I guess you're asking me because I know the publisher? It's not like I own that artwork.
I strongly suspect that if you used the artwork, Jay wouldn't mind. I strongly suspect that if you used the artwork without asking and he did mind, the sum total of punishments you would endure would be taking the artwork back out.
But I mean, if you have to ask me in public what you should do, the answer has to be to ask the rights-holder for permission. Although they are super busy.