John Firebaugh f64c2df17f Return null rather than empty string ...

Empty string still generates the error 'Problem parsing d=""',
while null results in no 'd' attribute at all.

2013-01-17 11:57:29 -08:00

..

id

Return null rather than empty string

2013-01-17 11:57:29 -08:00

lib

Gracefully handle Opera, which does not support pointer-events

2013-01-17 12:22:11 -05:00