I switch in english and it is better but there is still strange comportement. Précision: it is not extcal it is "XoopsFormDateTime" because it it the same in other modules. It is on a local serveur so i can not send the url.
I see to repeat the same comportement on another server.
Bonjour since i'have update xoops with last 2.5.2 i have a bug with extcal. screen shoot:http://www.xoops.kiolo.com/uploads/extcal02.jpg The calendar has a comporement not normal, it tremble and is diform. I don't know if it is in relation whith 2.5.2 but it is since i install it; JJDAI