Block Images...

hey... I want to how to prevent a person that visits my site to make a copy from my images.
For exemplo, a visitor sees my images' detail page and dicides to copy. How do i block my images?
thanks

you can't.
once the visitor see the image, he/she can copy it
because it's already on his own local computer.
that's how things work.
you can make the visitor's life harder by disabling right
click but by viewing the source or disabling JS they
can easily overcome any block you put in their way.