How can I key in data to gridweb by use keyboard button only?

How can I key in data to gridweb by use keyboard button only (no use mouse)

move between Used Cell (skip protected cell) by click tab button or some button ...

Hi,

You can use the 4 arrow keys to move the active cell in the sheet. But you can not skip the protected or readonly cells. And the keyboard navigating is only available with IE.