Add a preview function when hovering over a title listing.

[NaturalChemical]

I'd like to see the cover of a title in a larger size along with its tags and description when hovering over a listing with my cursor instead of opening it in a new tab. Sometimes I'll browse and open like 20 titles in new tabs then sort through which ones I'd like to check out. Maybe bind preview mode to a modifier key like alt so the preview appears when holding it down and hovering.