NameVirtualHost *:80

<VirtualHost _default:80>
   DocumentRoot /var/www/html/root
</VirtualHost>

<VirtualHost *:80>
   ServerAdmin webmaster@bar.com
   DocumentRoot /var/www/html/foobar
   ServerName foo.bar.com

<Directory /var/www/html/foobar/>
        DirectoryIndex index.html
</Directory>

   ErrorLog logs/foor.bar.com-error_log
   CustomLog logs/foo.bar.com-access_log combined
</VirtualHost>