if (stream_resolve_include_path('Auth/Yubico.php')) {
require_once 'Auth/Yubico.php';
$use_yubikey=1;
}
if ($use_yubikey == 1 ) {
print "</div></div>
<div class=control-group>
<label class=control-label>";
print _("Yubikey");
print "</label><div class=controls>";
print '
<input rel="popover" placeholder="This field is optional" data-trigger="hover" data-delay="1000" data-original-title="OTP hardware authentication" data-content="With this field you can login using a hardware OTP device called \'yubikey\'.<br/><br>
You can set your yubikey-id in the SIP settings page after you login with your SIP account and pasword.<br>
<br/>
For info and purchase of this key see <a href=\'http://www.yubico.com\' target=\'_blank\'>http://www.yubico.com</a>" type="text" name="yubikey" size="35">