[Seaside] Browser Information

[Ramon Leon]

Hi, wondering if anyone knows how to get at browser info from within 
Seaside?  In .Net the web server captures a bunch of information in 
Server.ServerVariables dictionary, most of that stuff I can find in 
HttpRequest, I can find the referrer, user-agent, and host, but I need 
the screen resolution.  I need to deliver a different css stylesheet 
depending on the users screen resolution and can't seem to find anything 
that'll work.