prevent multiple event bindings
prevent multiple event bindings

wakermahmud/cryptocat,DGO143/cryptocat,PeterDaveHello/cryptocat,Cryptodog/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,DGO143/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,arno01/cryptocat,PeterDaveHello/cryptocat,arno01/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,DGO143/cryptocat,Raynes/cryptocat,wakermahmud/cryptocat,Cryptodog/cryptocat,Raynes/cryptocat,Raynes/cryptocat