procedure WB_LoadHTML(WebBrowser: TWebBrowser; HTMLCode: string);
var
  sl: TStringList;
  ms: TMemoryStream;
  flag : OleVariant;
begin
  flag := 0;
  WebBrowser.Navigate('about:blank', flag,flag,flag,flag);
  while WebBrowser.ReadyState < READYSTATE_INTERACTIVE do
    Application.ProcessMessages;

  if Assigned(WebBrowser.Document) then
  begin
    sl := TStringList.Create;
    try
      ms := TMemoryStream.Create;
      try
        sl.Text := HTMLCode;
        sl.SaveToStream(ms);
        ms.Seek(0, 0);
        (WebBrowser.Document as IPersistStreamInit).Load(TStreamAdapter.Create(ms));
      finally
        ms.Free;
      end;
    finally
      sl.Free;
    end;
  end;
end;