[support] Drupal URLs

I have my Drupal installation in a subfolder but don't want to display the subfolder in the URL.

For example I want www.example.com/* to redirect to www.example.com/drupal/*

I've achieved this using this .htaccess.

RewriteEngine on RewriteCond %{HTTP_HOST} ^(www.)?example.com$ RewriteCond %{REQUEST_URI} !^/drupal/ RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ /drupal/$1 RewriteCond %{HTTP_HOST} ^(www.)?example.com$ RewriteRule ^(/)?$ drupal/index.php [L]

How can I make Drupal generate www.example.com URLs rather than www.example.com/drupal?

Any help would be appreciated, thanks.