I don't need any help with this. I found the following in someone's style sheet and thought it might be useful for some of you.
The boy image on this page is impossible to right-click and download.
He made this much too easy to find in the style sheet. I was thinking it would have been better to hide it several levels deep in sub style sheets that get loaded into the main style sheet. I think most thieves would give up before looking that deep for it.
Also, naming the image "boy.png" is a dead giveaway. A name like "advertisement.png" would have been less obvious.
background: url("boy.png") no-repeat scroll 0 0 transparent;