Make size of attached images configurable

I added this code to the image_attach module to optional display images in bodies.

new theme_image_attach_body($node) modified:

function theme_image_attach_body($node){

  if (variable_get('image_attach_body', 1)){
    drupal_add_css(drupal_get_path('module', 'image_attach') .'/image_attach.css');

    $image = node_load($node->iid);
    $info = image_get_info(file_create_path($image->images['thumbnail']));
    $output = '';
    $output .= '<div style="width: '. $info['width'] .'px" class="image-attach-body">';
    $output .= l(image_display($image, 'thumbnail'), "node/$node->nid", array(), NULL, NULL, FALSE, TRUE);
    $output .= '</div>'."\n";
  }
  return $output;
}

new image_attach_admin_settings() modified

function image_attach_admin_settings() {
  $form = array();
  
  $form['image_attach_existing'] = array(
    '#type' => 'radios',
    '#title' => t('Attach existing images'),
    '#default_value' => variable_get('image_attach_existing', 1),
    '#options' => array(0 => 'Disabled', 1 => 'Enabled'),
    '#description' => t('When enabled, will allow existing image nodes to be attached instead of uploading new images.')
  );
  $form['image_attach_body'] = array(
    '#type' => 'radios',
    '#title' => t('Attach existing images on body'),
    '#default_value' => variable_get('image_attach_body', 1),
    '#options' => array(0 => 'Disabled', 1 => 'Enabled'),
    '#description' => t('When enabled, will show the attached image to body.')
  );
  
  return system_settings_form($form);
}

sorry also for my horrible english.