Actually, I take my own link back, yours was far superior. I don't see how you can read that and not understand how your argument fell into that category of fallacies. Even the quote you repeated here fits your argument perfectly. A character attack is only one of the forms that ad hominem fallacious appeals can take. Any argument that aims to prove something about the person making the claim instead of about the claim itself is fallacious and falls into that specific category.