<Files ~ "\\.inc">
Order allow,deny
Deny from all
</Files>
<Files ~ "\\.tmp">
Order allow,deny
Deny from all
</Files>
<Files ~ "\\.log">
Order allow,deny
Deny from all
</Files>
<Files ~ "\\database">
Order allow,deny
Deny from all
</Files>
<Files down.txt>
Order allow,deny
Deny from all
</Files> 

ErrorDocument 401 /401.php
ErrorDocument 403 /403.php
ErrorDocument 404 /404.php
ErrorDocument 500 /500.php