[Plugin: Dynamic Content Gallery] Problem in firefox

Hi,
i´m very content about your plugin, it works perfect on Chrome and IE, it just doesn´t seem to work on firefox. See for yourself: http://hravecinsky.cz/slovesa-byt/

Do you know where the problem might be?

Thanx for support and keep up the good work!

Filip

http://ww.wp.xz.cn/extend/plugins/dynamic-content-gallery-plugin/