Entry

Why does Netscape request an animated gif on every loop?

What happens if I use an Expires header with an animated gif?

Jun 27th, 1999 23:42
Nathan Wallace, Basil Hussain, Charlie ROOT

From the Apache documentation:

"Expires Headers and GIF89A Animations

Navigator versions 2 through 4 will erroneously re-request GIF89A
animations on each loop of the animation if the first response included
an Expires header. This happens regardless of how far in the future the
expiry time is set. There is no workaround supplied with Apache, however
there are hacks for 1.2 and for 1.3."

People interested in these techniques should read the Internet
Advertising Banner Counting Methodology:

    http://www.basswood.com/standards/WD-countmethod.html