This page shows some of the various information you can gain about the user's envirnoment.
This is my attempt to create one user defined object that I can use for all of my multi-browser challenges. This table is created from a method in a user defined object that is located in "ex_environment.js". You will need to download and look at the source code to understand how the values in this table were created.
JavaScript to display the "navigator" object info.
JavaScript to display the "screen" object info.