//detect Netscape 4.7+
if (navigator.appName=="Netscape")
browsername=("Netscape");

//Detect IE
if (navigator.appVersion.indexOf("MSIE")!=-1)
browsername=("MSIE");

// Detect Opera if nessecary
//if ((navigator.userAgent.indexOf("Opera 6")!=-1)
//||(navigator.userAgent.indexOf("Opera/6")!=-1))
//broswername=("Opera")
//browserversion=("5")

browserversion="0";
if (navigator.appVersion.indexOf("2.")!=-1) {browserversion="2"};
if (navigator.appVersion.indexOf("3.")!=-1) {browserversion="3"};
if (navigator.appVersion.indexOf("4.")!=-1) {browserversion="4"};
if (navigator.appVersion.indexOf("5.")!=-1) {browserversion="5"};
if (navigator.appVersion.indexOf("6.")!=-1) {browserversion="6"};

if (browsername=="MSIE" && browserversion=="4")
   browserversion=("5");