For those of you who use Index Manager to prevent visitors from accesing folders on your site that do not have an index.html(or .htm, php, etc) page in them, if you add the following to your .htaccess file in public_html folder (Unix servers only, I don't know how the Windows servers work) it makes the system default to not allow anyone to access a folder without an index page in it. This may be old news for those who are more experienced with websites, but I was setting each folder manually and this does it by default. If someone more experianced knows why I should not be doing this, please let me know.
Here is the text I added to .htaccess in the public_html folder:
Options All -Indexes