GTranslate is good with firefox but not with explorer

[X10]

Hi, i find this beautiful script.
I install it in my customer site to try before buy the pro version and seems it's all right.
When i use it with firefox the translate is good in all language, in safari too but when i open IE and chrome it doesn't go.
Why ?

You can see the site here:
http://www.magneticbob.it/store/

It's an OSCommerce site.

Thank you.

[Edvard]

Try to use the Redirect translation method. If it is OK, then you are ready to go Pro.

Check for javascript errors in IE.