Dear @Keffer
it is not possible yet to add individual elements.
But the shortcode should work in the HTML element.
Can you add it and share the link?
Best!
Marius
Dear @tinjessen
you need to code that yourself with jQuery. Pretty simple.
First you hide the menu bar like @edgrbnz proposed.
Then you write a small jQuery script which shows or removes it, depending on the scroll-direction.
I also did that once for a project quite some time ago and was able to find many solutions with a quick Google search.
Best!
Marius
(FYI)
The idea ist to post a big amount of images via element grid to a site and then have the image cations all drawn automatically from the iptc data rather than writing a caption for every single image by hand. Could be a nice feature i guess. My weblog with standard wp theme does this and it is very helpful. Maybe sometime lay can have this too :)
Have a good one everybody.