var          browserName =  navigator.appName;
var          browserVer;
if          (browserName == "Netscape"){browserVer = parseFloat(navigator.appVersion)}
else if     (browserName == "Microsoft Internet Explorer"){var MSIEIndex = navigator.appVersion.indexOf("MSIE") + 5;browserVer = parseFloat(navigator.appVersion.substr(MSIEIndex,3));}
var                  IE3 =  ((browserName == "Microsoft Internet Explorer")&&(browserVer >= 3.0 && browserVer < 4.0)) ? 1 : 0;
var                  IE4 =  (document.all) ? 1 : 0;
var					 IE5 =  ((browserName == "Microsoft Internet Explorer")&&(browserVer >= 5))?1:0;
var                  IE6 =  ((browserName == "Microsoft Internet Explorer")&&(browserVer >= 6))?1:0;
var                   IE =  (IE3 || IE4 || IE5 || IE6) ? 1 : 0;
var              IEdhtml =  (IE4 || IE5 || IE6) ? 1 : 0;
var                  NS3 =  ((browserName == "Netscape")&&(browserVer >= 3.0 && browserVer < 4.0)) ? 1 : 0;
var                  NS4 =  (document.layers) ? 1 : 0;
var                  NS6 =  (document.getElementById && !IE) ? 1 : 0;
var                   NS =  (NS3 || NS4 || NS6) ? 1 : 0;
var              NSdhtml =  (NS4 || NS6) ? 1 : 0;
var                isMac =  (navigator.appVersion.indexOf("Mac") != -1) ? 1 : 0;
var              isTrans =  (NS4 || (IE4 && !isMac)) ? 1 : 0;
var              isDHTML =  (NSdhtml || IEdhtml) ? 1 : 0;