The maptour Story Maps no longer displayed with Firefox

Discussion created by IAUIDF on May 21, 2014
Latest reply on May 27, 2014 by ressinger-esristaff
Last few days, all maps using the maptour template no longer appear in the latest version of firefox. No problem with IE, Chrome or smartphone.
Have you an idea of the problem?
Link to my Story MAps : http://www.iau-idf.fr/cartes/story-maps.html
Many thanks
Cédric Lavallart - Webmaster