messageIsInView: function(e){
        return e ? overlapsElemView(e, this.e.messagesWrapper) : false;
      },
      settings:{
        get: (k,dflt)=>F.storage.get(k,dflt),
        getBool: (k,dflt)=>F.storage.getBool(k,dflt),
        set: (k,v)=>F.storage.set(k,v),
        /* Toggles the boolean setting specified by k. Returns the
           new value.*/
        toggle: function(k){
          const v = this.getBool(k);
          this.set(k, !v);
          return !v;
        },
        defaults:{
          "images-inline": !!F.config.chat.imagesInline,
          "edit-multiline": false,
          "monospace-messages": false,
          "chat-only-mode": false,
          "audible-alert": true,
          "audible-alert": true
        }
      },
      /** 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(this.settings.getBool('audible-alert',false)){

      label: "Message home/end buttons",
      boolValue: ()=>!Chat.e.btnMsgHome.classList.contains('hidden'),
      callback: ()=>Chat.toggleNavButtons()
    },{
      label: "Images inline",
      boolValue: ()=>Chat.settings.getBool('images-inline'),
      callback: function(){
        const v = Chat.settings.getBool('images-inline',true);
        const v = Chat.settings.toggle('images-inline');
        Chat.settings.set('images-inline', !v);
        F.toast.message("Image mode set to "+(v ? "hyperlink" : "inline")+".");
        F.toast.message("Image mode set to "+(v ? "inline" : "hyperlink")+".");
      }
    },{
      label: "Audible alerts",
      boolValue: ()=>Chat.settings.getBool('audible-alert'),
      callback: function(){
        const v = Chat.settings.getBool('audible-alert');
        const v = Chat.settings.toggle('audible-alert');
        Chat.settings.set('audible-alert', !v);
        if(!v){
          setTimeout(()=>Chat.playNewMessageSound(), 50);
        if(v) setTimeout(()=>Chat.playNewMessageSound(), 50);
        }
        F.toast.message("Audio notifications "+(v ? "disabled" : "enabled")+".");
        F.toast.message("Audio notifications "+(v ? "enabled" : "disabled")+".");
      }
    }];

    /**
       Rebuild the menu each time it's shown so that the toggles can
       show their current values.
    */