TheMadScientist - 9:03 pm on Dec 3, 2009 (gmt 0) Here's some more info:
GZip happens between your server and the browser. You do not need to include any code in your files, but it needs to be enabled on your server for you to use it and the browser requesting the page has to be able to handle the compression for the page & images to display properly.
Mod_Deflate on Apache [httpd.apache.org]
Here's some more info: