// JavaScript Document
var nn4, ie, pc, mac, nn6, nn;

nn = navigator.appName.indexOf("Netscape") > -1;
ie = !nn;
win = navigator.userAgent.indexOf("Win") > -1;
mac = !win;
if (nn) {
  nn4 = navigator.appVersion.indexOf("4.") > -1;
  nn6 = !nn4;
} else {
  nn4 = false;
  nn6 = false;
}