This gallery is right-click protected. It prevents the user
from accessing the right-click context menu.
This is not an effective way to protect your photos
First, this is a bad thing to do because it breaks basic functionality that people are used to having access to (eg. right-clicking a link and opening it in a new tab).
Most photographers demand it because they think it prevents people from downloading collection images to their hard drives. While it might deter clients who are not tech-savvy, it is not effective protection. Image links can always be accessed by looking at the source code; therefore, images can be accessed directly – and saved.