Igor, Jim, Michael Many thanks to all your help. That aspect of the site is working properly now in both IE and FireFox. Tomorrow I will try to get my head round the nginx version of RewriteRule ^/ppg/(email|print)/(quote|ack|amend)(\d+)\.pdf$ /ppg/index.php?view=$2&act=$1&id=$3 For now, its been a long day and I'm bushed. Good night. And thanks again. Ian