Last modified: 2011-07-15 01:41:33 UTC
Section titles, and therefore the ids of several span elements, can be invalid if the section title begins with a number or period. Examples are in http://en.wikipedia.org/wiki/Firefox - "64-bit builds" and ".NET Framework 3.5 Service Pack 1". These ids must be validated to begin with a letter and contain only the characters enclosed in brackets for clarity: [a-zA-Z0-9\-_:.].
I'm fairly sure this is a duplicate of bug 9530.
Yup. *** This bug has been marked as a duplicate of bug 9530 ***