if(navigator.appName.indexOf("Netscape")!=-1) { var okValue="4.00"; } else { var okValue="4.0"; }
if(parseFloat(navigator.appVersion)<okValue){ window.location.href = "sorry.htm"; }
var N=(navigator.appName.indexOf("Netscape")!=-1)
var M=(navigator.appName.indexOf("Microsoft")!=-1)