ServerController.ShowLoadingAnimation := false

If you are using IntraWeb’s PageMode then there is problem though: PageModus has no explicit ServerController.  Instead, an instance of TIWServerControllerBase is created when TWebModule is created. Inother words to change an option such as ShowLoadingAnimation you have to do that in your PageMode’s TWebModule:

uses

IWGlobal ...

procedure TWebModule1.WebModuleCreate(Sender: TObject);
begin
GServerController.ShowLoadingAnimation := false;
end;