I'm trying to upload some pictures in my facebook using the photo upload manager that have. the problem is that i can not see the directories on the left and the contents in the right box as you can see in the picture below. i'm using on windows vista ultimate 64 bit the firefox 3.5.3 and the latest version of java 1.6.0.16

It may not be a great solution but try using IEtab in the meantime, it should work via it:

https://addons.mozilla.org/en-US/firefox/addon/1419