Please add the ability to zoom-in on pictures in the full window viewer.
In most modern websites, a full window image viewer allows for zooming in - either by keyboard and mouse scroll, or by a mechanism such as one mouse button zooms in and another out, or at worst separate zoom in and zoom out buttons in the window.
Too often, I want to see a little closer than the picture allows. Zoom in rescales everything in the main page, but not the picture being looked at in the full window - which is useless.