Squashed commit of the following:

commit 3b958e0a3a3234ae865631e9b0b07e778b8bcbac
Author: fess16 <fess61@gmail.com>
Date:   Wed May 15 13:45:56 2013 +0300

    changes:
    folder_del.xul - checkbox - add ID
    add showRemoveLabelDialog()
    add onLoadFolderDeleteDialog()
    add onAcceptFolderDeleteDlg()

commit e993174b0cf97fe8f6be758e314c9831b9726328
Author: fess16 <fess61@gmail.com>
Date:   Wed May 15 12:42:38 2013 +0300

    add folder_del.xul

commit 4949a449b1dcfdefb3fe5e5435d52e7d95ac362b
Author: fess16 <fess61@gmail.com>
Date:   Tue May 14 15:07:32 2013 +0300

    changes:
    add folder.xul
    add showFolderDialog()
    add onLoadFolderkDialog()
    add onAcceptFolderDialog()

commit 2ec44a36eff63a32e22f55de08f071a844feaae2
Author: fess16 <fess61@gmail.com>
Date:   Tue May 14 13:58:15 2013 +0300

    changes:
    add folderMenuAddHere()
    modify showBookmarkDialog()

commit cd60797f6777596eea6e100e2acdfaf980dcb813
Author: fess16 <fess61@gmail.com>
Date:   Tue May 14 13:18:51 2013 +0300

    changes:
    event oncontextmenu to property context (appendMenuItem() and doBuildMenu())
    showContextMenu() to onShowContextMenu()
    add onShowFolderMenu()
    fix folderMenuOpenAll()

commit 1ed6bc7b9695af192ca5e6ae5d26895fa0c09c54
Author: fess16 <fess61@gmail.com>
Date:   Tue May 14 10:54:01 2013 +0300

    add folderMenuOpenAll()

commit de2b308f76e9c088d1adbf686b7be4cd678f8a29
Author: fess16 <fess61@gmail.com>
Date:   Mon May 13 16:07:13 2013 +0300

    add images for popup menus

commit 6ed8b773c55da32871e9c3ce20db411dfc7964cd
Author: fess16 <fess61@gmail.com>
Date:   Mon May 13 15:50:01 2013 +0300

    lang.dtd

commit d62f6cd9f1b5698eee21ff3439c68b98da0f7a5b
Author: fess16 <fess61@gmail.com>
Date:   Mon May 13 15:46:12 2013 +0300

    add blank folder menu popup
0.0.7