Click on photo to open URL in lightbox
I wondered if it is possible to open the URL entered behind a photo in a "lightbox-like popup window". My thought was to place several (portrait) shots on my site, and select "Action on Click: Go to custom URL".
Here I would enter the URL of this posting on Instagram for example. I know that I can open the window in a new tab, but is it possible to open it like a lightbox, or just as an overlayed window, so my website is still slightly visible?
Thanks in advance