 is turned on you need to specify a value.</div>');
                error_els.push('#width-padding');
                has_error = true;
              } else {
                if ($('#width-padding-toggle').is(':checked') && w_pad != '') {
                  data['width-padding'] = w_pad;
                }
              }

              if ($('#height-padding-toggle').is(':checked') && h_pad == '') {
                $('#height-padding').addClass('ui-state-error');
                $('#height-padding').siblings