Let's follow up this discussion at the Neptune Community
(this forum will be kept in read-only mode)
thanks for this great hint.
Looks that this could be a solution for what i'm looking for.
Where can i find that tool?
From my point of view this library seems really powerful https://annotorious.github.io/getting-started.html and let's you use jQuery (which is loaded within UI5)
Google and stack-overflow for sure will offer you other alternatives.
Good luck on the project and enjoy!