The picture on the first JackinHow-To page isn't an illustration (and isn't necessary, with all the other illustrations on the How-To pages). The Circumcision picture should also be changed to an illustration. There are many people who would use those pictures to accuse you of giving pornography to minors, so please change them to illustrations.
You're mistaken – both items you mentioned are, in fact, illustrations (just very realistic ones, probably based on photographs). Concerning the circumcision illustration, that was borrowed from a book put out by a major publishing house (see the copyright info on the bottom of the page), and since it is entirely non-sexual I can't imagine how it could be considered "pornography." The other one, on the first JackinHow-To page, is a little more questionable; it was adapted from the same book but originally showed someone putting on a condom. (Erection and all.) It has been a part of JackinWorld for almost 18 months and there has been no problem. I would like to use an original illustration there, but we don't have a replacement at this time.