– Sliding gallery –
Controls:
Slide: mouse wheel or arrow keys left & right
Zoom: arrow keys up & down
Link: click on a picture to load the picture’s jump-to link (for ex. linking in IM)
– Perspective gallery –
Controls:
Move forward & backward: mouse wheel
Zoom: click on a picture
this one is a little buggy - my first try at real perspective with the right formulas - so if you get any strange things like images rotated by 90° and stuff like that, just reload, it seems to fix itself :h:
oh and remember to focus it first 
