In Firefox the productcard is not updating

[schreng]

Hello,
I am a new user of the virtuemart, and i'm not a a big programmer. so what am i doing wrong? in firefox i can not add things to the card... here is the link: fuzzi-records.de/shop
in safari everything is working fine...
I am using jommla 1.7 and the the newest version of virtuemart.
thank you for your help!
best regards

[jenkinhill]

Same as http://forum.virtuemart.net/index.php?topic=93547.msg31254

[schreng]

Maybe, but it doesn't helped me. the problem is still there