/**
* Does a HTTP HEAD fetch, fetching only the page
* headers. The current base URL is unchanged by this.
* @param string $url URL to fetch.
* @param hash $parameters Optional additional GET data.
* @return boolean True on success.
* @access public
*/
function head($url, $parameters = false)
{
$this->fix_protected_zone($url);
return parent::head($url, $parameters);
}
