text: isc.TabSet.create({
      ID: "tabSet",
      tabBarPosition: "top",
      width: 550,
      height: 200,
      canEditTabTitles: true, 
      titleEditEvent: "doubleClick",
      titleEditorTopOffset: 2,
      tabs: [
          {title: "Blue", canClose: true,
           pane: isc.Img.create({autoDraw: false, width: 48, height: 48, src: "pieces/48/pawn_blue.png"})},
          {title: "Green", canClose: true,
           pane: isc.Img.create({autoDraw: false, width: 48, height: 48, src: "pieces/48/pawn_green.png"})},
          {title: "123-Yellow", canClose: true, ID: "validatedTab",
           pane: isc.Img.create({autoDraw: false, width: 48, height: 48, src: "pieces/48/pawn_yellow.png"})},
          {title: "Can't Change Me", canEditTitle: false,
           pane: isc.Img.create({autoDraw: false, width: 48, height: 48, src: "pieces/48/pawn_red.png"})}
      ],
      titleChanged : function (newTitle, oldTitle, tab) {
          if (tab.ID == "validatedTab" && (!newTitle || newTitle.substring(0, 4) != "123-")) {
              isc.warn("Tab title must start with the prefix \"123-\"");
              return false;
          }
      }
  });
  