User blog:YYHPkmnHxH14/"Show" button does not work

Hello there, I am a new user here, and I'm just wondering what are these "Click "show" to read the arc plot." all about. I tried clicking those, but nothing happened.

Here are some examples of such:

http://bleach.wikia.com/wiki/Momo_Hinamori#Zanpakut.C5.8D_Unknown_Tales_arc_.28anime_only.29

http://bleach.wikia.com/wiki/T%C5%8Dshir%C5%8D_Hitsugaya#Gotei_13_Invading_Army_arc_.28anime_only.29

Can someone please explain this to me?