function upgradeCleanup()
{
  // Obsolete files that need to be cleaned up.
  deleteThisFolder("Communicator", "psm");
}

var srDest = $SpaceRequired$;
var err;

err = initInstall("Personal Security Manager", "Personal Security Manager", "$Version$");
logComment("initInstall: " + err);

var communicatorFolder = getFolder("Communicator");
logComment("communicatorFolder: " + communicatorFolder);

if(verifyDiskSpace(communicatorFolder, srDest))
{
  // Call upgradeCleanup() before addDirectory() in case we accidentaly
  // delete files that we happen to be also installing.  This way, if we do,
  // it will just get reinstalled.  This is for safety measure.
  upgradeCleanup();
  err = addDirectory("Program",          // reg entry
                     "$Version$",        // version
                     "bin",              // jar source
                     communicatorFolder, // target folder
                     "",              // relative subdir
                     true );             // force flag
  logComment("addDirectory() returned: " + err);

  if(err==SUCCESS)
  {
    var pki = getFolder("Chrome","pippki.jar");
    var nss = getFolder("Chrome","pipnss.jar");
    registerChrome(CONTENT | DELAYED_CHROME, pki, "content/pippki/");
    registerChrome(CONTENT | DELAYED_CHROME, nss, "content/pipnss/");
    err = performInstall(); 
    logComment("performInstall() returned: " + err);
  }
  else
  {
    cancelInstall();
    logComment("cancelInstall() due to error: "+err); 
  }
}
else
    cancelInstall(INSUFFICIENT_DISK_SPACE);