Oxwall architecture and events does not allow to do that via plugin. The photo plugin has to be changed internally and hard code this.

okay, may be you now which files must be edited and what link i must add to do this?

I need to do some analysis for that to find the exact file location. I will do the analysis and get back to you.

It would not be possible to add to the place where you require. It needs heavy changes to the java script as it uses popup screen using javascript.