How to ask the IE browser stop self-refreshing at the server side ?

Hi, all. I am using Apache and PHP. Today, I found a very strange thing about the browser IE4.0/5.0 (Internet Explorer). I have a PHP page, which will use "system" call to activate some backend program to generate a PDF file (this "system" call process will take about 30~60 seconds), the strange thing is: if I am using IE 4.0/5.0, I will get several files instead of one PDF file!! it seems that the IE kept refreshing itself automatically(keeps sending request to the server), the more strange thing is: the IE couldn't display the PDF file, and however, if I close the browser, and open the IE again, I could display the PDF file using the same URL! is there a way to fix this at the server side? If I am using netscape, there is no such problem. Any input is highly appreciated. Thanks, George -----Original Message----- From: John Meyer [mailto:john_meyer@geocities.com] Sent: Wednesday, August 29, 2001 5:57 PM To: php-general@lists.php.net Subject: [PHP] Posting to oneself Two questions: 1. Can I tell a form to post to itself without specifying the name of the web page? 2. If I have a function on one page called by another, will this resolve correctly? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net For additional commands, e-mail: php-general-help@lists.php.net To contact the list administrators, e-mail: php-list-admin@lists.php.net