title: Using navigator.platform to detect os in browser
body: <p>I'm trying to detect browser version on the client side using navigator.platform.  I can't find a list of all the platform identifiers.  I've looked at w3C, the MDN documentation, and googled it. (I even resorted to Bing...) Could you point me to a list? </p>
  
  <p>Thank you,  </p>