Switch to Previous/Next picture from Right Panel

[aegoreev at gmail.com]

Hello,

 I usually browse through my pictures using Left/Right keys and check boxes 
using mouse in Tags Tree. But if I want to use Left / Right keys again after 
that I have to click back on a picture first. It slows me down a bit.
I have many tags in my library so shortcuts are  too complicated to remember.

Is there a way to adjust that? Or is there a better workflow to assign tags to 
your pictures?

Thanks,
AG