On the German Wikipedia, I've noticed they've got a nifty trick with templates whereby you can include a button to hide an infobox, in the same way as you can hide a contents box. See an example down at the bottom of this page:
http://de.wikipedia.org/wiki/Thematische_Navigation_Deutschsprachige_L%C3%A4...
I don't know of any templates to do the same thing on en:, and when I tried to replicate the code on the German templates it didn't work. Does anyone know how one might get something similar working on en:?
WT