I have a set of check boxes and I wanted to know if there was anyway i could implement following behavior: if all checkboxes are unchecked then disable button else enable button
First loop through all the checkboxes in the form to find if anything is checked. If nothing is checked you can change the flip the 'disabled' flag on the button.
Mannu, You could use onBlur to see when the checkbox was active. This wouldn't tell you for sure if something changed. But it will tell you something might have changed and then you can run your function to see if no checkboxes are currently selected.