Use of window.showModalDialog() is deprecated. Use window.open() instead. For more help https://developer.mozilla.org/en-US/docs/Web/API/Window.open
L'uso de window.showModalDialog() ye obsoleto. Faiga servir en cuenta window.open(). Ta saber-ne mas, consulte https://developer.mozilla.org/en-US/docs/Web/API/Window.open .