Suggestion: Improving functionality of popup windows

The dimensions for the popup need to be bigger that those of the image, because usually the browser uses that dimensions for the full window, but you only know the size of the content. Each browser has different extra dimensions (toolbars, status bar, ...) so it might not be possible to specify a dimension that matches everyone. And when it isn't opened properly then they will complain because it doesn't have enough size or because it has a white border.

So if you want to do it, go ahead, it should be easy to change.