В .htaccess прописываем следующее:
RewriteRule ^filter-(.*)-(.*)-(.*)\.html$ /index.php?include_page=filter&arg0=$1&arg1=$2&arg2=$3 [L,QSA]
RewriteCond %{REQUEST_URI} !.*\.(ico|gif|jpg|jpeg|png|js|css)
RewriteRule ^(.*)\.html$ /index.php?include_page=$1 [L,QSA]