[#218] change readonly box instead of textarea.
[#218] change readonly box instead of textarea.

kaosf/shirasagi,tecoda/opendata,shirasagi/ss-handson,togusafish/shirasagi-_-shirasagi,itowtips/ss-handson,tecyama/opendata,tany/ss,masakiooba/shirasagi-1,koba5884/shirasagi,tany/om,shirasagi/ss-handson,sunny4381/shirasagi,tany/om,tecyama/opendata,sunny4381/opendata,togusafish/shirasagi-_-shirasagi,tachikomapocket/shirasagi-_-shirasagi,itowtips/shirasagi,gouf/shirasagi,sunny4381/shirasagi,koba5884/shirasagi,gouf/shirasagi,tecyama/opendata,bee01/shirasagi,itowtips/ss-handson,sunny4381/shirasagi,t-wata-cldt/shirasagi,itowtips/shirasagi,koba5884/shirasagi,kaosf/shirasagi,tany/ss,tecyama/opendata,shirasagi/opendata,bee01/shirasagi,tany/ss,sunny4381/opendata,shirasagi/opendata,MasakiInaya/shirasagi,sunny4381/ss-handson,hotmix/shirasagi,tecoda/opendata,t-wata-cldt/shirasagi,ShinjiTanimoto/shirasagi,shirasagi/shirasagi,ShinjiTanimoto/shirasagi,sert-uw/shirasagi,sert-uw/shirasagi,shirasagi/shirasagi,sunny4381/ss-handson,mizoki/shirasagi,kaosf/shirasagi,sunny4381/ss-handson,tachikomapocket/shirasagi-_-shirasagi,sunny4381/opendata,itowtips/shirasagi,toyodundy/shirasagi,sunny4381/ss-handson,tachikomapocket/shirasagi-_-shirasagi,shirasagi/opendata,mizoki/shirasagi,gouf/shirasagi,hotmix/shirasagi,tany/ss,itowtips/shirasagi,mizoki/shirasagi,shirasagi/shirasagi,masakiooba/shirasagi-1,tecoda/opendata,toyodundy/shirasagi,tachikomapocket/shirasagi-_-shirasagi,sert-uw/shirasagi,masakiooba/shirasagi-1,hotmix/shirasagi,tecoda/opendata,kaosf/shirasagi,t-wata-cldt/shirasagi,shirasagi/shirasagi,toyodundy/shirasagi,tany/om,sunny4381/opendata,MasakiInaya/shirasagi,sunny4381/shirasagi,tany/om,togusafish/shirasagi-_-shirasagi,t-wata-cldt/shirasagi,bee01/shirasagi,itowtips/ss-handson,masakiooba/shirasagi-1,itowtips/ss-handson,shirasagi/ss-handson,ShinjiTanimoto/shirasagi,mizoki/shirasagi,shirasagi/opendata,bee01/shirasagi,MasakiInaya/shirasagi,koba5884/shirasagi,gouf/shirasagi,hotmix/shirasagi,shirasagi/ss-handson,MasakiInaya/shirasagi,togusafish/shirasagi-_-shirasagi,toyodundy/shirasagi,sert-uw/shirasagi,ShinjiTanimoto/shirasagi