######################################
Options +FollowSymLinks -MultiViews
RewriteEngine On

RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L] 

RewriteBase /

RewriteRule ^features/?$ index.php?main_page=features[QSA,L]
RewriteRule ^features/.*$ index.php?main_page=features[QSA,L]
RewriteRule ^features\?(.*)$ index.php?main_page=features?$1 [QSA,L]
######################################