<td onclick="window.location.href='https:/www.geogebra.org/calculator';"><img src="Geogebra.png" alt="Geogebra Icon" width="30" height="30"></td>

how do i open a new tab if i click on it?

i've tried this: <td onclick="window.location.href='https:/www.geogebra.org/calculator'target='_blank';"><img src="Geogebra.png" alt="Geogebra Icon" width="30" height="30"></td> but it didnt work...