Any modern browsers not supporting gzip compressed files

I want to deliver a huge javascript compressed

[jetteroheller]

When I search for delivering compressed files, I found only very old pages in the internet.

What modern browser, I mean a browser able to show Google Adsense, is unable to deal with files compressed delivered?

[tedster]

AFAIK all modern user agents support http compression, and that includes search engine spiders. You've got no concerns as far as I know. Any browser that supports HTTP 1.1 should be fine.

Here's the result of some research I did.

IE support began with version 4

NN support began with version 4.06

Mozilla support since at least 1998

FF launched with support in place

Opera support began with version 5.12

Safari had reports of buggy support only in early versions (2003)

Chrome launched with support in place

JAWS support began around 2005

K-Meleon support since at least 2002, version 0.6

Lynx support since version 2.6

Camino support at least since version 0.6

[jetteroheller]

Thanks for the answer.

In a similar discussion to check the best server side solution,
I got as an answer in the apache forum here:

[mrclay.org...]

So it's possible to deliver the browser the best compressed file, depending what compression the browser knows.

Now my new question, any browser supporting 7z?

Would be great, because all the directories shown with the mouse over effects are

565 kb uncompressed
104 kb GZIP compressed
59 kb 7Z with strongest PPMd compression

The javascript is like

ofc['example.com-2008-index' ]="Here is the complete HTML code of the directory";

[jetteroheller]

Just since one week, I deliver *.js and *.htm GZ compressed.

All the small buttons and icons are together in one graphic.

Today, I got the first email of a problem. Somebody sent me a screen shot, how it looks like when a browser opens a GZ file without decompression.

It looks like an old MSIE screen shot.
In the headers of the email

X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.3959

Can it be, that MSIE 6 does not support GZ compressed delivery?

I wonder, because my page impression stats in Google AdSense and Google Analytics are at record height.