var tempN = navigator.appName;

var tempV = parseInt(navigator.appVersion);

var myplatform = navigator.platform; 

var tempUA = navigator.userAgent;

var pattern= /Opera/;

var oper=tempUA.match(pattern);



     if (tempN =="Netscape" && tempV >=4 && tempV < 5)       { var version="n4";  Brwsr="n4";}

else if (tempN =="Netscape" && tempV >= 5)                   { var version="n6";  Brwsr="ok";}

else if (tempN =="Microsoft Internet Explorer" && tempV >=4) { var version="ie";  Brwsr="ok";}

else if (tempN =="Opera" && tempV >=5)                       { var version="op";  Brwsr="ok";}

else { var version="xx";}