event after 5 clicks inputField

hi

I have a table with 3 input fields in every row.

Every input filed is a 5 digit number.

I want that the user wouldn't have to press tab to move between the fields. every time he will press 5 keys on keyborad he will be moved to the next field (i want to to count the onkey events in the client in order to save the user from pressing enter/tab).

How can i do that?

Thanks,

Roni.