This might work. If not it's a start.
In your config, add this line:
In Reply To:
show_dirs => 0,
right after this line:
In Reply To:
show_pass => 1,
Around line 421, change this line:
In Reply To:
if ($file eq '..') {
to this:
In Reply To:
if ($file eq '..' && $config{'show_dirs'}) {
and around line 434, change this line:
to this:
In Reply To:
elsif ($config{'show_dirs'}) {
Change show_dirs from 0 to 1 to show the dirs. You will also need to set the root_dir to the directory you want to browse.
Regards,
Charlie