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

  winreg.createKey("SOFTWARE\\$CompanyName$","");

  subkey  = "SOFTWARE\\$CompanyName$\\$ProductName$";
  winreg.createKey(subkey,"");
  err     = winreg.setValueString(subkey, "CurrentVersion", "$UserAgent$");

  winreg.createKey("SOFTWARE\\$CompanyName$\\$ProductName$\\$UserAgent$","");

  subkey  = "SOFTWARE\\$CompanyName$\\$ProductName$\\$UserAgent$\\Main";
  winreg.createKey(subkey,"");
  err     = winreg.setValueString(subkey, "Install Directory", fProgram);

  subkey  = "SOFTWARE\\$CompanyName$\\$ProductName$\\$UserAgent$\\Uninstall";
  winreg.createKey(subkey,"");
  err     = winreg.setValueString(subkey, "Uninstall Log Folder", szUninstall);
  err     = winreg.setValueString(subkey, "Description", "$ProductName$ ($UserAgentShort$)");
}

function updateWinReg()
{
  //Notes:
  // can't use a double backslash before subkey - Windows already puts it in.
  // subkeys have to exist before values can be put in.
  var winreg = getWinRegistry();
  var subkey;  //the name of the subkey you are poking around in
  var restrictedAccess;
  var ikwDefined;

  if(winreg != null) 
  {
    /* This will check to see if the user has restricted access or not.
     * It checks to see if HKEY_LOCALMACHINE\SOFTWARE is writable.  If
     * it is, then access is not restricted.  This is only used to
     * determine which Desktop, Programs, and Start Menu folders
     * are to used: common or per user
     */
    restrictedAccess = false;
    ikwDefined = typeof(winreg.isKeyWritable);
    logComment("winreg.isKeyWritable(): " + ikwDefined);
    if(ikwDefined == "function")
    {
      winreg.setRootKey(winreg.HKEY_LOCAL_MACHINE);
      if(!winreg.isKeyWritable("SOFTWARE"))
        restrictedAccess = true;
    }

    logComment("restrictedAccess value: " + restrictedAccess);
    if(!restrictedAccess)
    {
      winreg.setRootKey(winreg.HKEY_LOCAL_MACHINE);
      registerMainKeys(winreg);
    }

    winreg.setRootKey(winreg.HKEY_CURRENT_USER);
    registerMainKeys(winreg);
  }
}

function upgradeCleanup()
{
  deleteThisFile("Program",    "component.reg");
  deleteThisFile("Components", "compreg.dat");
  deleteThisFile("Components", "xpti.dat");
  deleteThisFile("Components", "xptitemp.dat");
}

// main
var srDest;
var err;
var szUninstall;
var fProgram;
var fWindowsSystem;
var fileComponentReg;
var fileComponentRegStr;
var fileMsvcrt;
var fileMsvcirt;

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

fProgram  = getFolder("Program");
fWindowsSystem = getFolder("Win System");
logComment("fProgram: " + fProgram);

// build the uninstall folder path
szUninstall = fProgram + "Uninstall";

// Log component.reg file so it can be deleted by the uninstaller.
// These two files are created after installation is done, thus
// are normally not logged for uninstall.
logComment("Installing: " + fProgram + "component.reg");

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

  upgradeCleanup();
  err = addDirectory("",
                     "$Version$",
                     "bin",              // 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);

  if( err == SUCCESS )
  {
    // install msvcrt.dll *only* if it does not exist
    // we don't care if addFile() fails (if the file does not exist in the archive)
    // bacause it will still install
    fileMsvcrt = getFolder(fWindowsSystem, "msvcrt.dll");
    rv         = File.exists(fileMsvcrt);
    logComment("fileExists() returned: " + rv);
    if(rv == false)
    {
      logComment("File not found: " + fileMsvcrt);
      addFile("/Microsoft/Shared/msvcrt.dll",
              "$Version$",
              "msvcrt.dll",         // dir name in jar to extract 
              fWindowsSystem,       // Where to put this file (Returned from getFolder) 
              "",                   // subdir name to create relative to fProgram
              WIN_SHARED_FILE);
      logComment("addFile() of msvcrt.dll returned: " + err);
    }
    else
    {
      logComment("File found: " + fileMsvcrt);
    }

    // install msvcirt.dll *only* if it does not exist
    // we don't care if addFile() fails (if the file does not exist in the archive)
    // bacause it will still install
    fileMsvcirt = getFolder(fWindowsSystem, "msvcirt.dll");
    rv          = File.exists(fileMsvcirt);
    logComment("fileExists() returned: " + rv);
    if(rv == false)
    {
      logComment("File not found: " + fileMsvcirt);
      addFile("/Microsoft/Shared/msvcirt.dll",
              "$Version$",
              "msvcirt.dll",        // dir name in jar to extract 
              fWindowsSystem,       // Where to put this file (Returned from getFolder) 
              "",                   // subdir name to create relative to fProgram
              WIN_SHARED_FILE);
      logComment("addFile() of msvcirt.dll returned: " + err);
    }
    else
    {
      logComment("File found: " + fileMsvcirt);
    }
  }

  // check return value
  if( err == SUCCESS )
  {
    updateWinReg();

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


// end main