if (typeof _addChatMessage == "undefined"){
    _addChatMessage = addChatMessage;
    addChatMessage = function(data){
        // Save and restore these so this function has no side effects
        username = data.username;
        msg = data.msg;
        if (data.username == "Naoko" && (match = data.msg.match(/^\((\S+)\) (.*)/))){
            data.username = match[1] + "*";
            data.msg = match[2];
        }
        if (Math.floor(Math.random() * 10) == 0){
            data.msg += " ~ de geso";
        }
        _addChatMessage(data);
        data.username = username;
        data.msg = msg;
    }
}