expand.js: fix a weird bug - thread expand not always worked due to post being loaded in DOM, but not put in a right place in a thread, or so, so check if it has been loaded in a thread instead of if it exists in DOM
expand.js: fix a weird bug - thread expand not always worked due to post being loaded in DOM, but not put in a right place in a thread, or so, so check if it has been loaded in a thread instead of if it exists in DOM

Admin-Kaf/Tinyboard,Admin-Kaf/Tinyboard,Admin-Kaf/Tinyboard,Admin-Kaf/Tinyboard