function getNNVersionNumber() {
if (navigator.appName == "Netscape") {
var appVer = parseFloat(navigator.appVersion);
if (appVer < 5) {
return appVer;
} else {
if (typeof navigator.vendorSub != "undefined") {
return parseFloat(navigator.vendorSub);
}
}
}
return 0;
}
var isNN6Min = getNNVersionNumber() >= 6;
if (isNN6Min) {
// perform statements for NN 6 or later
}