} /* AB made two amendmends to WAW function disabledfield(): added .required = false for if statement and .required = true for else if statement; also added "required" inline HTML for "Receipt_id" */ function disablefield() { if ( document.getElementById('par_att_no').checked == true ){ document.getElementById('Receipt_id').disabled = true; document.getElementById('Receipt_id').required = false; } else if (document.getElementById('par_att_yes').checked == true ){ document.getElementById('Receipt_id').disabled = false; document.getElementById('Receipt_id').required = true; } }