by Cheon, YoungMin on WordPress.org
Show or hide contents(text, image etc.) with animated effects wrapped by spoiler markup tag([spoiler][/spoiler]).

TinyMCE button
New version of Ajax Spoiler plugin renamed to ‘Advanced Spoiler’.
Show or hide contents(text, image etc.) with animated effects wrapped by spoiler markup tag([spoiler][/spoiler]).
Enclose any paragraphs or passages with [spoiler] and [/spoiler]
e.g.
[spoiler] spoiler content... [/spoiler][spoiler effect="blind" show="Show me" hide="Hide me"] spoiler content... [/spoiler]