access table cells using tab key with iterators

Hi,

I use a tableview with iterator and allow users to mouseclick certain column cells. I capture these user interactions using server event "onCellClick". But I cannot access these cells using tab key instead of mouse click. But tab key is a must for visibly challenged users. Is there any way to access table cells using tab keys (with iterators)?

I use icons in those cells to replace check box and change the icons to differentiate checked/unchecked status.