Fullsized photos - unabled to get copied

[Hanna.]

http://kcavallari.com/photos/displayimage.php?album=410&pid=15916#top_display_media (example)

I added a plugin which made the fullsize out of the croped one from the standard version. But why can't I copy or save the photo to my computer from either normal_ or fullsized version? It's important to me that photos at my site are open for everybody to browse, copy and save.

Thanks in advance.

[Nibbler]

Because you enabled the "anti image theft" option.

http://documentation.coppermine-gallery.net/en/configuration.htm#admin_image_transparent_overlay_start