I created versions of the different options we are discussing (to try, access
beta wiki with the test users indicated below):
- A: Panel opens with both up and down arrows (user: mv-both, password: 123)
- B: Up and down keys act as default for scroll (user: mv-none, password: 123)
- C: Provide image and data on a continuous page (user: mv-page, password: 123)
I'm ok with A or B. I think A provides a better solution to the user intent (view the metadata), while avoiding diverging from the standard scrolling direction too much. If A still generates confusion, I'm ok to default to the browser defaults, but I think the line-by-line increment will led most people to unnecessary additional key presses.
I think that changing completely the metaphor we are using (as in C), will bring more problems than benefits (e.g., what to do with the controls over the image).
I'll do some quick tests with some users, but feel free to provide your impressions when trying the above.
Pau