To fix #1088 (closed).
Very much work in progress. Just a quick first pass using Unicode points which have a good chance to work / be found everywhere (even old IE / WinXP and stock browser on Android 2.3).
- switch from
CloseX-31.png
tou00D7
(i.e.,×
) - switch submenu indicators to
u25BA
/\u25C4
(dingbats) - to do: clean up, move inline-styles to class, work on MathEvents.
@dpvc what do you think of this approach?