I suspect an IE-specific conflict between the ca. 2008 css list js and jquery that I injected my little submenu into.
I got it working. Am I going to now obsessive-compulsively troubleshoot an issue between a really old (and rather complex) javascript, jquery and IE10?
In a word, no.
EDITED: 27 Aug 2013 15:23 by DSMITHHFX