isIE = isNS = isNS4 = isNS6 = isNS7 = isNS8 = isFlash5 = isFlashMX = false;

// Browser Detection
if(navigator.appName.indexOf('Netscape') == 0) isNS = true;
if(navigator.appName.indexOf('Microsoft') == 0) isIE = true;

isMac = (window.navigator.appVersion.indexOf("Mac") != -1);
isWindows = navigator.userAgent.indexOf("Windows 95") != -1 ||
            navigator.userAgent.indexOf("Windows 98") != -1 ||
            navigator.userAgent.indexOf("Windows NT") != -1;
isMacIE = (isMac && isIE);

// Netscape Version
if(isNS) {
  v = parseInt(navigator.appVersion);
  if(v == 4) {
    isNS4 = true;
  } else if(v == 5) {
    p = navigator.userAgent.lastIndexOf('/');
    v = parseInt(navigator.userAgent.substr(p+1));
    eval("isNS" + v + " = true");
  }
}

// Flash Version
if (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"]  && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin) {
  if (navigator.plugins && navigator.plugins["Shockwave Flash"] && (versionIndex = navigator.plugins["Shockwave Flash"].description.indexOf(".")) != - 1) {
    var versionString = navigator.plugins["Shockwave Flash"].description.substring(versionIndex-1, versionIndex);
    versionIndex = parseInt( versionString );
    if ( versionIndex >= 5 ) {
      isFlash5 = true;
    }
    if ( versionIndex >= 6 ) {
      isFlashMX = true;
    }
  }
} else if (isIE && isWindows) {
  document.write('<script language="VBScript">\n');
  document.write('on error resume next\n');
  document.write('isFlash5 = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.5")))\n');
  document.write('isFlashMX = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.6")))\n');
  document.write('</script>\n');
}