ckfinder in opencart not working in firefox 3.6?

Hi,

I found that the ckfinder in opencart not working in firefox 3.6. The files in the folder is not shown in the page and the upload button is disabled in Firefox 3.6.

However, it works nicely in IE, Google Chorme, Safari.

Does anyone encounter this problem? I'm not sure whether this problem happens in Firefox earlier version or not.

I've tried to upload a standalone ckfinder script from ckfinder website, it is working in firefox 3.6. I only got this problem when it is used under opencart.

Please share...

Thank you!

(I'm using opencart 1.3.4)