Sometimes you get a client that just wants to do what they want to do no matter the reasons they shouldn't.

In the case of disabling right click the short answer is: Don't.

The long answer is there is no way to prevent someone from taking images off your site. You can slightly thwart users, but it is against the very principles of the way the internet works, and is considered bad practice. Typically only websites that are either unprofessional or shady use these techniques.

Now, with that, sometimes you'll get a person who says, "just do it anyway." So here is some jQuery to make this an easy job for you.