disabling and enabling text boxes

[surya gond]

Hi,
I have a form in which, there will be a table with x number of rows and 2 columns coming from the database. These two columns are text boxes. In each row there will be a check box adjacent to the textboxes.

What I want is
1) on loading the form, all the x number of rows in the table should be disabled for editing.
2) When a user clicks on the check box in a row the text boxes in that row should be enabled for editing.
3) when a user does not put any data in the row the user should get a popup about the null value.

Please let me know if I need to provide some more information

Thank You

[Eric Pascarello]

You want to do this server or client side?