Hi Dominic, thanks a lot.
It works for Desktop version, but not for mobile (Android). On Android still the second slide comes first.
Copied as well the script into the admin folder, but no effect to be seen... tthe ALT field is not diplayed when slides in back-end are collapsed. However, this last issue could be solved, if the backend field YOUR SLIDES - TITLE (currently always just one dot ".") would be displayd in the frontend exactly as currently the field CONTENT.
Thanks in advance!
Thomas