[Plugin: NextGEN Smooth Gallery] Wrong Charset presentation with Firefox

If you visit this page http://21.maidan.org.ua/2011/07/zhyive-belarus/ with Firefox and try to navigate thru smooth gallery and the bottom of page – you’ll see cyrillic text presented with some weird characters.

Everything works fine with Explorer and Chrome.

Can be anything done about that? Or it’s simply browser issue?

Thank you
NZ

http://ww.wp.xz.cn/extend/plugins/nextgen-smooth-gallery/