Script For A Kind Of A "enlargening Image Effect"

I'm working on a website of my own and I don't know any javascript or jquery, but I want to add one feature to my website, and that is this "image enlargening effect". It is difficult to say exactly what I want, so I found a website where this exact effect is used (if you're wondering what the hell is the site about, its about magic tricks and custom playing cards, both of which are a sort of a hobby of mine)

So If you click on one of the images below the video, it will sort of grow and become this floating window, in which you can click to see the next picture and close it whenever you're done. It also sleightly dims the website in the background to draw the attention to the image which appeared.

What I'm looking for, is a script that is ready and can be used without much tweaking since I don't really know any javascript and jquery. I don't really need the part of the effect in which the website in the background is dimmed, but it would be nice to have if it's not something awfully complicated. So, do you know any scripts which would do just that? If yes, could you send me some links? I understand that it might be difficult to find a script which doesn't require tweaking, so if you know some which do require adjustments, I welcome you to tell about them, as long as you state that it does require some sort of optimisation, I'll do my best to optimise it to my website then.