SWF Files and Browser Cache

Hi,

I make very simple flash banners for my website announcing updates. I keep the filename the same, so when it's updated, anyone who has my banner on their site does not have to re-arrange their HTML code.

The problem is that when I replace the old SWF file with the new one, my browser keeps the old file in cache. Even a Shift+F5 (forced refresh in Mozilla) does not refresh the SWF file like it does with JPG, PNG and GIF files. This leads me to believe that people int he general public are not always seeing the most recent SWF from my site.

My question is if there is a setting I could place in the actionscript or the embed/object HTML code that would specify whether or not to chache the SWF.

Thanks for helping.

-Mike

Something like... on the url linking to your banner...

...yourbanner.swf?r=' + Math.round(Math.random() * 99999) + '...

I tried pluging your code into the movie I have for detecting screen size, but it's not updating any ideas on what's wrong?