function toggle_unknown_organization() {
  var state = document.forms[0].not_on_list.checked;
  set_unknown_organization( state );
}

function set_unknown_organization( state ) {
    document.forms[0].orgabbreviation.disabled = ! state;
    document.forms[0].orgfullname.disabled = ! state;
    document.forms[0].orgaddress.disabled = ! state;
    document.forms[0].orgcity.disabled = ! state;
    document.forms[0].orgstate.disabled = ! state;
    document.forms[0].orgcountry.disabled = ! state;
    document.forms[0].zip.disabled = ! state;
    document.forms[0].organization.disabled = state;
    document.forms[0].not_on_list.checked = state;
}