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I've been following the interesting thread today - asked a techie friend
about Nick's first question. His response:

1 - It's part of the http request header generated by the browser,
specifically the user agent field. See
http://developer.netscape.com/docs/manuals/enterprise/nsapi/http.htm
for the gritty details. The thing is its just a text
string and some browsers give the option of pretending
to be IE as some websites will reject requests from non
ie browsers. I use Mozilla and Konqueror, I make them
both identify themselves as IE.

He also said that content could be - and was - adjusted based on the
above agent string. 

Jon





-----Original Message-----
From: Nick Poole [mailto:[log in to unmask]] 
Sent: 16 June 2004 16:24
To: [log in to unmask]
Subject: Browsers


Dear All,

I just wanted to ask some questions relating to this one:

1. How does IE identify itself? Is it information that the browser
itself passes on, or do the stats/log files make an intelligent guess
based on what kind of software it is? If the latter, is there not scope
for different browsers sharing a common engine/origin to be identified
as each other? I recall using a 'who am I' script which Identified my
browser as Mozilla instead of IE5. How accurate is browser
identification anyway?

2. What are the access issues surrounding 'browser sniffing'? Aside from
the fact that it seems to be predominantly Javascript-based, are there
issues arising from identifying the browser and serving up the
content/style accordingly? And to what extent can a combination of XHTML
and CSS overcome different browser requirements?

3. What is it that leads to these browser quirks? I have seen
information relating to the Document Object Model and how it is handled,
but I am not totally sure that I understand how these make one browser
any better or worse, particularly in terms of accessibility. Is it
possible to design in such a way that the presentation is independent of
these quirks?

Any answers (very) gratefully received!

Nick 




-----Original Message-----
From: Museums Computer Group [mailto:[log in to unmask]] On Behalf Of
Gray, Peter
Sent: Wednesday, June 16, 2004 2:29 PM
To: [log in to unmask]
Subject: Re: Launch of www.ingenious.org.uk

> > Our stats for www.artandarchitecture.org.uk show that 91.5%
> of hits are
> > recorded as from IE browsers.
> 
> The stats for http://www.torbytes.co.uk show an average less
> than 80% from
> IE browsers.
> 

That matches my experience of 80%-ish claiming to be IE. Of course, I
can only dream of getting the sort of traffic NMSI gets ;-)
> 
> It should be about standards, not market dominance.  

Indeed. I was just surprised by the claim of 98% IE.

Pete
-- 
Peter M Gray
Museums Officer


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