//#######################################################################################
//This code detects what browser and operating system is being used. 
//These browser variables are used throughout various documents for JS purposes.
//#######################################################################################

<!--
  NS4 = (document.layers);
  IE4 = (document.all);
  ver4 = (NS4 || IE4);
  IE5 = (IE4 && navigator.appVersion.indexOf("5.")!=-1);
  isMac = (navigator.appVersion.indexOf("Mac") != -1);
  if (!ver4) event=null;
//-->