';
$file_url_web = api_get_path(WEB_COURSE_PATH).$_course['path'].'/document'.$header_file.'?'.api_get_cidreq();
$pathinfo = pathinfo($header_file);
if ($pathinfo['extension']=='wav' && preg_match('/_chnano_.wav/i', $file_url_web) && api_get_setting('enable_nanogong') == 'true'){
echo '
';
echo '
';
echo '
';
echo '
';
} else {
if ($pathinfo['extension']=='swf'){ $width='83%'; $height='83%';} else {$width='100%'; $height='';}
echo '
';
}