Template:HoverTOC
From LGPedia
This template reduces the Table of Contents to a small, right-floating block that expands if the user hovers over it. This is useful for pages with big TOCs, where the displaying of the TOC ruins the layout.
Usage
{{HoverTOC}}align= can be set to either left, right or none. right is default.
space= can be set to control the margin on align's side (if it's left or right). It defaults to 10.