1.) When you right-click on an image, the existing "Custom Bla Bla" link we have when you right-click on an html page...Goes away....and a "Put Image in New Window" custom link appears.
2.) When you select it...the image opens itself in a New Firefox tab?
SO....It's really the same (menu wise) as Firefox's current setup. If you right-click on a page you get some stuff (we have a custom link in there already). And if you right-click on an image you get different stuff (that is what we need you to create).
And the final action is to simply open whatever image was right-clicked-on and chosen....in a new Firefox Tab.