Options +FollowSymLinks
RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME}/ !-f
RewriteCond %{REQUEST_FILENAME}/index.php !-f
RewriteCond %{REQUEST_FILENAME}/index.html !-f
RewriteCond %{REQUEST_URI} !\.(gif|jpg|png)
RewriteRule ^(.*) index.php?rewrite=on&_mod_rw_url_=$1 [QSA]