RewriteEngine On
Options -Indexes
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([0-9A-Za-z]+)?$ etc/surl.php?key=$1 [L]
RewriteRule ^index\.(htm|html|php)  / [R=301,L]
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]