we have a website that we work with artists and they are concerned about their prints being ripped off. We also have people that commonly link our images to their website. we thought about disabling right click and employing java tricks to prevent copying or linking to our website but most of those would probably fail. What i would like to know is if its possible to use some code or tool to add an invisible watermark to the images on our site and if someone links to it, have the watermark show or if someone copy it have the water mark visibly show. Any ideas.