DRM for a photography blog

Hi all, I am starting a photography blog. I don’t want to have my images stolen, but I also don’t want to mar the display version of my work with watermarks. What solutions do you use for DRM in a photo blog? The ideal solution would be a watermark that appears on an image if it is downloaded/saved from the browser, but not when the browser displays it.
Another alternative would be a javascript that disables the right-click needed to “Save Image As…”. As much as possible I want to let the browser work normally, so the watermark option would be preferable.

Photobloggers – how do you do DRM on your blogs?

Thanks for your advice!