Options -Indexes -MultiViews

order deny,allow
deny from all

<Files ~ "^[a-zA-Z0-9-_]+\.jpg$">
  allow from all
</Files>

<Files ~ "^[a-zA-Z0-9-_]+\.gif$">
  allow from all
</Files>

<Files ~ "^[a-zA-Z0-9-_]+\.png$">
  allow from all
</Files>

<Files ~ "^[a-zA-Z0-9-_]+\.pdf$">
  allow from all
</Files>

<Files ~ "^[a-zA-Z0-9-_]+\.doc$">
  allow from all
</Files>

<Files ~ "^[a-zA-Z0-9-_]+\.xls$">
  allow from all
</Files>