function upgradeCleanup()
{
  // Obsolete files from Netscape 6.0 and Netscape 6.01 that
  // need to be cleaned up.
  deleteThisFile("Components", "DOMDataSource.shlb");
  deleteThisFile("Components", "PSMGlue.shlb");
  deleteThisFile("Components", "ucth.shlb");
  deleteThisFile("Components", "ucvja.shlb");
  deleteThisFile("Components", "ucvko.shlb");
  deleteThisFile("Components", "ucvtw.shlb");
  deleteThisFile("Components", "ucvtw2.shlb");
  deleteThisFile("Components", "ucvlatin.shlb");
  deleteThisFile("Components", "ucvcn.shlb");
  deleteThisFile("Components", "ucvibm.shlb");
  deleteThisFile("Components", "TextServices.shlb");
  deleteThisFile("Components", "gfx2.shlb");
  deleteThisFile("Components", "gfx2.xpt");
  deleteThisFile("Components", "gifdecoder2.shlb");
  deleteThisFile("Components", "jpegdecoder2.shlb");
  deleteThisFile("Components", "pngdecoder2.shlb");
  deleteThisFile("Components", "bmpdecoder2.shlb");
  deleteThisFile("Components", "xbmdecoder2.shlb");
  deleteThisFile("Components", "unicharutil.shlb");
  deleteThisFile("Components", "chardet.shlb");
  deleteThisFile("Components", "lwbrk.shlb");
  deleteThisFile("Components", "nslocale.shlb");
  deleteThisFile("Components", "strres.shlb");
  deleteThisFile("Components", "mozBrowser.shlb");
  deleteThisFile("Components", "Cache.shlb");
  deleteThisFile("Components", "JSLoader.shlb");
  deleteThisFile("Components", "content.shlb");
  deleteThisFile("Components", "jsurl.shlb");
  deleteThisFile("Components", "uriloader.shlb");
  deleteThisFile("Components", "shistory.shlb");
  deleteThisFile("Components", "view.shlb");
  deleteThisFile("Components", "compreg.dat");
  deleteThisFile("Components", "xpti.dat");
  deleteThisFile("Components", "xptitemp.dat");
  deleteThisFile("Program",    "defaults/pref/config.js");
  deleteThisFile("Program",    "defaults/pref/initpref.js");
  deleteThisFile("Program",    "defaults/pref/macxprefs.js");
  deleteThisFile("Program",    "defaults/pref/bug307259.js");
  deleteThisFile("Program",    "defaults/wallet/URLFieldSchema.tbl");
  deleteThisFile("Program",    "Essential Files/PSM.shlb");
  deleteThisFolder("Program",  "psmdata");
  deleteThisFolder("Program",  "res/samples");
  deleteThisFolder("Program",  "res/throbber");
}

var srDest = $SpaceRequired$;

var err = initInstall("Mozilla Navigator", "Browser", "$Version$"); 
logComment("initInstall: " + err);

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

if (verifyDiskSpace(fProgram, 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",
                       "$Version$",
                       "viewer",           // jar source folder
                       fProgram,           // target folder 
                       "",                 // target subdir 
                       true );             // force flag 

    logComment("addDirectory() returned: " + err);

    var cf = getFolder("Chrome");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"toolkit.jar"),"content/global-platform/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/communicator-platform/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/navigator-platform/");

    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"toolkit.jar"),"content/global-region/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/communicator-region/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/editor-region/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/navigator-region/");

    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"toolkit.jar"),"content/global/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/autoconfig/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/cookie/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/wallet/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"content-packs.jar"),"content/content-packs/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/communicator/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/editor/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/navigator/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/necko/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/mozldap/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"classic.jar"),"skin/classic/communicator/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"classic.jar"),"skin/classic/editor/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"classic.jar"),"skin/classic/global/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"classic.jar"),"skin/classic/messenger/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"classic.jar"),"skin/classic/navigator/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"modern.jar"),"skin/modern/communicator/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"modern.jar"),"skin/modern/editor/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"modern.jar"),"skin/modern/global/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"modern.jar"),"skin/modern/messenger/");
    registerChrome(SKIN | DELAYED_CHROME, getFolder(cf,"modern.jar"),"skin/modern/navigator/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"help.jar"),"content/help/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"pippki.jar"), "content/pippki/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"pipnss.jar"), "content/pipnss/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/xbl-marquee/");
    registerChrome(CONTENT | DELAYED_CHROME, getFolder(cf,"comm.jar"),"content/p3p/");

    // make an alias to the browser on the desktop 
    var desktopFolder = getFolder("Mac Desktop");
    var ignoreErr = fileMacAlias(fProgram,      "Mozilla",   // source
                             desktopFolder, "Mozilla");  // target
    logComment("fileMacAlias() returned: " + ignoreErr);

    if (err==SUCCESS)
    {
	    err = performInstall(); 
    	logComment("performInstall() returned: " + err);
        if (! ('buildID' in Install))
        {
          logComment("Running Pre-Mozilla 0.9.1");
          initInstall("Post-install Cleanup Utility", "Browser/xpicleanup", "$Version$");
          fEssentialFiles = getFolder(fProgram, "Essential Files");
          cleanupUtility = getFolder(fEssentialFiles, "XPICleanup");
          err = File.execute(cleanupUtility);
          logComment("execute() returned: " + err);
          err = performInstall();
        }
    }
    else
    {
	    cancelInstall(err);
	    logComment("cancelInstall() due to error: " + err);
    }
}
else
    cancelInstall(INSUFFICIENT_DISK_SPACE);