var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var ver;
if (bName == "Netscape" && bVer >= 4) {
  ver = 4;
} else if (bName == "Microsoft Internet Explorer" && bVer >= 4) {
  ver = 4;
} else {
  ver = 0;
}
if (ver >= 4) {
  document.write('<img src="/wusage_screen_properties.gif?' +
    'width=' + screen.width + '&' +
    'height=' + screen.height + '&' +
    'depth=' + screen.colorDepth + '">');
  document.writeln();
}