note 70831 deleted from function.header by tularis

Note Submitter: jeremiah at jkjonesco dot com ---- If you are trying to modify headers to work with dynamic binaries such as videos or images, the new IE 7 appears to require the ETag header. You will need to make sure that you follow the specifications for how ETag works in order for your cache control to work properly. Mozilla supports the ETag header as well, but does NOT require it for caching. If you need to cache a dynamic image, video, or other binary file, and are having trouble in IE7, be sure to set your ETag and then check for the If-Not-Modified header on subsequent requests so that you can properly return the 304 Not Modified page. If you do not, then it will NEVER cache the file (as of IE version 7.0.5730.11