function IsWinnt()
{
  /* Determines if the script is running under NT or not.
   *
   */
  var winreg = getWinRegistry();
  var subkey;
  var valname;
  var szCurrentVersion;

  winreg.setRootKey(winreg.HKEY_LOCAL_MACHINE);
  subkey              = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion";
  valname             = "CurrentVersion";
  szCurrentVersion    = winreg.getValueString(subkey, valname);
  logComment("szCurrentVersion: " + szCurrentVersion);
  if((szCurrentVersion == "") || (szCurrentVersion == null))
  {
    return false;
  }
  else
  {
    return true;
  }
}

function registerKeys()
{
  var subkey;  //the name of the subkey you are poking around in
  var err;
  var winreg;
  var tmpstr;

  winreg = getWinRegistry();
  winreg.setRootKey(winreg.HKEY_LOCAL_MACHINE);

  createRootRegKey(winreg);
  registerMainKeys(winreg);
  registerMozillaKeys(winreg);
}

function createRootRegKey(winreg)
{
  var subkey;
  var tmpstr;
  var tmpstr2;
  var index;

  tmpstr = new String(regRootKey);
  index = tmpstr.indexOf("\\");
  subkey = "";

  while(index > 0)
  {
    subkey = subkey + tmpstr.substring(0, index);
    winreg.createKey(subkey,"");

    tmpstr2 = tmpstr.substring(index+1, tmpstr.length);
    tmpstr = new String(tmpstr2);

    index = tmpstr.indexOf("\\");
    subkey = subkey + "\\";
  }

  if(tmpstr.length > 0)
  {
    subkey = subkey + tmpstr;
    logComment("subkey:  " + subkey);
    winreg.createKey(subkey,"");
  }

  winreg.createKey(subkey + "\\$UserAgent$","");
}

function registerMainKeys(winreg)
{
  var subkey;  //the name of the subkey you are poking around in
  var err;

  err     = winreg.setValueString(regRootKey, "CurrentVersion", "$UserAgent$");

  winreg.createKey(regRootKey + "\\$UserAgent$", "");

  subkey  = regRootKey + "\\$UserAgent$\\Main";
  winreg.createKey(subkey,"");
  err     = winreg.setValueString(subkey, "Install Directory", fProgram);

  subkey  = regRootKey + "\\$UserAgent$\\Uninstall";
  winreg.createKey(subkey,"");
  err     = winreg.setValueString(subkey, "Uninstall Log Folder", fProgram + "Uninstall");
  err     = winreg.setValueString(subkey, "Description", "$ProductName$ ($UserAgentShort$)");
}

function registerMozillaKeys(winreg)
{
  var regKey;
  var subkey;  //the name of the subkey you are poking around in
  var err;

  regKey = "Software\\Mozilla";
  winreg.createKey(regKey, "");
  winreg.createKey(regKey + "\\MfcEmbed $UserAgent$", "");

  subkey = regKey + "\\MfcEmbed $UserAgent$\\bin";
  winreg.createKey(subkey, "");
  err   = winreg.setValueString(subkey, "PathToExe", fProgram + "$MainExeFile$");

  subkey = regKey + "\\MfcEmbed $UserAgent$\\Extensions";
  winreg.createKey(subkey, "");
  err   = winreg.setValueString(subkey, "Components", fProgram + "\\Components");
  err   = winreg.setValueString(subkey, "Plugins",    fProgram + "\\Plugins");
}

function LogGreUninstaller()
{
  var winreg = getWinRegistry();
  var subkey;
  var valname;
  var szUninstallString;

  winreg.setRootKey(winreg.HKEY_LOCAL_MACHINE);
  subkey              = "SOFTWARE\\mozilla.org\Gre\\1.3a\\Uninstall";
  valname             = "UninstallString";
  szUninstallString   = winreg.getValueString(subkey, valname);
  logComment("szUninstall String:  " + szUninstallString);

  // Log the uninstall command to run the GRE uninstaller.
  // This needs to be logged after all the files have been installed.
  logComment("Uninstall Command: \"" + szUninstallString + " /app mfcembed /us");

  if((szUninstallString == "") || (szUinstallString == null))
  {
    return false;
  }
  else
  {
    return true;
  }
}

// main
var srDest;
var err;
var err2;
var fProgram;
var fSubdir;
var fWindowsSystem;
var fileComponentRegStr;
var fileComponentReg;
var restrictedAccess;
var fileToRegister;
var regRootKey;

regRootKey = new String("Software\\$CompanyName$\\MFCEmbed");

srDest = $SpaceRequired$:bin;
err    = initInstall("$ProductName$", "MFCEmbed", "$Version$"); 
logComment("initInstall: " + err);

fProgram  = getFolder("Program");
logComment("fProgram: " + fProgram);

if(verifyDiskSpace(fProgram, srDest))
{
  setPackageFolder(fProgram);

  err = addDirectory("",
                     "",
                     "gre_app_support", // dir name in jar to extract 
                     fProgram,      // Where to put this file (Returned from GetFolder) 
                     "",            // subdir name to create relative to fProgram
                     true);         // Force Flag 
  logComment("addDirectory() of Program returned: " + err);

  err = addDirectory("",
                     "",
                     "Embed",      // dir name in jar to extract 
                     fProgram,     // Where to put this file (Returned from GetFolder) 
                     "",           // subdir name to create relative to fProgram
                     true);        // Force Flag 
  logComment("addDirectory() of Program returned: " + err);

  fSubdir = getFolder("Program", "plugins");
  File.dirCreate(fSubdir);

  fSubdir = getFolder("Program", "components");
  File.dirCreate(fSubdir);

  // check return value
  if( err == SUCCESS )
  {
    registerKeys();
    LogGreUninstaller();
//    // we don't want to fail on errors for the above
//    resetError();

      err = performInstall();
      logComment("performInstall() returned: " + err);
  }
  else
    cancelInstall(err);
}
else
  cancelInstall(INSUFFICIENT_DISK_SPACE);


// end main