@Asse. Yes, I have an idea as to what is going on, but you have to be able to follow me. Please have a read of how to see Javascript errors in your browser. After you read that, go to the upload page and you will see that the error is still there. The only difference is that now, the error is not affecting the Easy Flash Uploader, which is why the Browse button now shows. I had mentioned this in an earlier post.
Now, I think that maybe the jQuery on your page is conflicting with the Mootools code that I wrote for Easy Folder Listing Pro (EFLP). You actually have several jQuery libraries loaded on the page, which is typically not a good idea. Nonetheless, something is affecting the Mootools code for EFLP.