Lightbox for forum (Fancybox)

So I was wondering if there is a Lightbox for your forum.
Then I found this:
https://help.forumotion.com/t113681-add-a-lightbox-effect-to-the-images-of-the-forum?highlight=lightbox

I really like the Fancybox.
BUT IT DOESN'T WORK.

Can anyone help me? I did all steps but still not working.
http://ao1clan.forumfreek.com/

Are you trying to get it to work in something other than just the topics? on the tutorial there is an instruction that says to check "only in topics" on the javascript management page, if you're trying to use it on something other than just the topics, make sure you check the appropriate box, in this case you'll probably want "in all the pages". After this make sure the box on the javascripts management page says that it's enabled otherwise any scripts you publish wont be active. 

Hope this helps.

@Mike, nono, only in topics.
And yes I have checked the javascript.

It might be better to go with your original plan instead of the forumotion created one, the tutorial example isnt working either. Im going to look into the code and find out why.

Maybe others know another solution?

The tutorial should be working now.  I noticed it was not working a couple days ago, but it is working now.

@SLGray, are you sure?
Because when I go to the Example page, Still not working.

On my forums, it is working.

Yes, it is now working @SLGray @Mike,

BUT I have another issue now.
Some people on my forum don't get the right url, so when you click on an image, it opens a new tab with servimg and the image.
Is there a way do disable that?

2nd BUT:
Youtube video's aren't working.

3th BUT:
If there are more images in 1 post, I cant press Next or Previous, there are no arrows.

EDIT:
4th BUT:
I selected Show in gallery in Js, but not working in gallery?

bump