Make the Upload/Manage Images template narrower

I am using Node Gallery in my production site and the drop down box to set the Gallery for each image on the Upload images and Manage images pages is very disruptive. The column makes the page too wide to display on a 1024px wide screen. Second, I do not want my users to be able to move their images between galleries because each user has their own gallery and the drop down box allows images to be moved to any gallery currently existing. edit: only true 'cuz signed in as admin.

I made two changes to get rid of the Gallery column on the Upload images and Manage images pages.

First, in the July 29 version of theme.inc file I replaced line 130

- $header = array('', t('Delete'), t('Thumbnail'), t('Edit'), t('Weight'), t('Gallery'), t('Cover'));
  foreach (element_children($form['files']) as $key) {
    // Add class to group weight fields for drag and drop.
    $form['files'][$key]['weight']['#attributes']['class'] = 'upload-weight';

with

+ // TALLY  - make column header zero width
+ $header = array('', t('Delete'), t('Thumbnail'), t('Edit'), t('Weight'), t(''), t('Cover'));
  foreach (element_children($form['files']) as $key) {
    // Add class to group weight fields for drag and drop.
    $form['files'][$key]['weight']['#attributes']['class'] = 'upload-weight';
+   // TALLY - add class for column data - add css to set display: none for the class
+   $form['files'][$key]['gid']['#attributes']['class'] = 'form_gallery_id';  

These lines zeroed out the Gallery column header and added a class for the data in the column. I then added the following class definition to my css file.

/* Node Gallery - hide gallery selector from Upload/Manage Images form */
.form_gallery_id {
  display: none;
}

The css class definition hides the display of the data in the column. In this case, the data being hid is the drop down box of gallery names. Because the form element is still there, the gid variable is being set and data integrity is maintained.

This is not an elegant hack, but it gets my site closer to what I want. If I knew Drupal better, I would either make the display of that column optional from the admin settings page or, preferably, make the column heading hideable through css the same as the data column is hideable. Another possibility is to assign a permission to allowing the gallery to be changed for each individual image.