};
    resized.$disabled = true/*gets deleted when setup is finished*/;
    window.addEventListener('resize', F.debounce(resized, 250), false);
    return resized;
  })();
  fossil.FRK = ForceResizeKludge/*for debugging*/;
  const Chat = ForceResizeKludge.chat = (function(){
    const cs = { // the "Chat" object (result of this function)
      verboseErrors: false /* if true then certain, mostly extraneous,
                              error messages may be sent to the console. */,
      playedBeep: false /* used for the beep-once setting */,
      e:{/*map of certain DOM elements.*/
        messageInjectPoint: E1('#message-inject-point'),
        pageTitle: E1('head title'),
        loadOlderToolbar: undefined /* the load-posts toolbar (dynamically created) */,
        inputWrapper: E1("#chat-input-area"),
        inputElementWrapper: E1('#chat-input-line-wrapper'),
        fileSelectWrapper: E1('#chat-input-file-area'),

             hidden */
          "chat-only-mode": false,
          /* When set to a URI, it is assumed to be an audio file,
             which gets played when new messages arrive. When true,
             the first entry in the audio file selection list will be
             used. */
          "audible-alert": true,
          /*
           */
          "beep-once": false,
          /* When on, show the list of "active" users - those from
             whom we have messages in the currently-loaded history
             (noting that deletions are also messages). */
          "active-user-list": false,
          /* When on, the [active-user-list] setting includes the
             timestamp of each user's most recent message. */
          "active-user-list-timestamps": false,

        }
      },
      /** Plays a new-message notification sound IF the audible-alert
          setting is true, else this is a no-op. Returns this.
      */
      playNewMessageSound: function f(){
        if(f.uri){
          if(!cs.pageIsActive
             /* ^^^ this could also arguably apply when chat is visible */
             && this.playedBeep && this.settings.getBool('beep-once',false)){
            return;
          }
          try{
            this.playedBeep = true;
            if(!f.audio) f.audio = new Audio(f.uri);
            f.audio.currentTime = 0;
            f.audio.play();
          }catch(e){
            console.error("Audio playblack failed.", f.uri, e);
          }
        }
        return this;
      },
      /**
         Sets the current new-message audio alert URI (must be a
         repository-relative path which responds with an audio
         file). Pass a falsy value to disable audio alerts. Returns
         this.
      */
      setNewMessageSound: function f(uri){
        this.playedBeep = false;
        delete this.playNewMessageSound.audio;
        this.playNewMessageSound.uri = uri;
        this.settings.set('audible-alert', uri);
        return this;
      },
      /**
         Expects e to be one of the elements in this.e.views.

    /** Returns a new Error() object encapsulating state from the given
        fetch() response promise. */
    cs._newResponseError = function(response){
      return new Error([
        "HTTP status ", response.status,": ",response.url,": ",
        response.statusText].join(''));
    };

    /** Helper for reporting HTTP-level response errors via fetch().
        If response.ok then response.json() is returned, else an Error
        is thrown. */
    cs._fetchJsonOrError = function(response){
      if(response.ok) return response.json();
      else throw cs._newResponseError(response);
    };

    /**
       Removes the given message ID from the local chat record and, if
       the message was posted by this user OR this user in an
       admin/setup, also submits it for removal on the remote.

       id may optionally be a DOM element, in which case it must be a
       .message-row element.

        });
      }else{
        this.deleteMessageElem(id);
      }
    };
    document.addEventListener('visibilitychange', function(ev){
      cs.pageIsActive = ('visible' === document.visibilityState);
      cs.playedBeep = false;
      if(cs.pageIsActive){
        cs.e.pageTitle.innerText = cs.pageTitleOrig;
        if(document.activeElement!==cs.inputElement()){
          /* An attempt to resolve usability problem reported by Joe
             M. where the Pale Moon browser is giving input focus to
             the Preview button. The down-side of this is that it will
             deselect any text which was previously selected on this

          select: selectSound,
          callback: function(ev){
            const v = ev.target.value;
            Chat.setNewMessageSound(v);
            F.toast.message("Audio notifications "+(v ? "enabled" : "disabled")+".");
            if(v) setTimeout(()=>Chat.playNewMessageSound(), 0);
          }
        },{
          label: "Notify only once when away",
          hint: "Notify only for the first message received after chat is hidden from view.",
          boolValue: 'beep-once'
        },{
          label: "Play notification for your own messages",
          hint: "When enabled, the audio notification will be played for all messages, "+
            "including your own. When disabled only messages from other users "+
            "will trigger a notification.",
          boolValue: 'alert-own-messages'
        }]

      if(Chat===v) v = Chat.settings.defaults[k];
      if(valueKludges.hasOwnProperty(v)) v = valueKludges[v];
      Chat.settings.set(k,v)
      /* fires event listeners so that the Config area checkboxes
         get in sync */;
    });
  })();

  (function(){/*set up message preview*/
    const btnPreview = Chat.e.btnPreview;
    Chat.setPreviewText = function(t){
      this.setCurrentView(this.e.viewPreview);
      this.e.previewContent.innerHTML = t;
      this.e.viewPreview.querySelectorAll('a').forEach(addAnchorTargetBlank);
      setupHashtags(this.e.previewContent)/*arguable, for usability reasons*/;

      const fd = new FormData();
      fd.append('content', txt);
      fd.append('filename','chat.md'
                /*filename needed for mimetype determination*/);
      fd.append('render_mode',F.page.previewModes.wiki);
      F.fetch('ajax/preview-text',{
        payload: fd,
        onload: function(html){
          Chat.setPreviewText(html);
          F.pikchr.addSrcView(Chat.e.viewPreview.querySelectorAll('svg.pikchr'));
        },
        onerror: function(e){
          F.fetch.onerror(e);
          Chat.setPreviewText("ERROR: "+(
            e.message || 'Unknown error fetching preview!'
          ));
        },
        beforesend: function(){