and all anyone has to do is do a viewsource to get the image directory
better off watermarking the larger images
or hit PrtScr (Print Screen) to copy straight to the clipboard. Go with Merlins watermarking suggestion - there's plenty of discussion elsewhere on the forum about how much a waste of effort (and in fact, an overall negative) disabling right click is.
Development Manager @ JSWeb Ltd - suppliers of Applepay/Googlepay for Zencart
20 years with Zencart !