Title says it all. One thing this patch changes more is opts.object_name.lower to opts.module_name in bodyclass block, because opts.module_name is exactly opts.object_name.lower.
Index: django/contrib/admin/templates/admin/change_form.html
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--- django/contrib/admin/templates/admin/change_form.html (revision 3439)
+++ django/contrib/admin/templates/admin/change_form.html (working copy)
@@ -6,8 +6,8 @@
{% endblock %}
{% block stylesheet %}{% admin_media_prefix %}css/forms.css{% endblock %}
{% block coltype %}{% if ordered_objects %}colMS{% else %}colM{% endif %}{% endblock %}
-{% block bodyclass %}{{ opts.app_label }}-{{ opts.object_name.lower }} change-form{% endblock %}
+{% block bodyclass %}{{ opts.app_label }}-{{ opts.module_name }} change-form{% endblock %}
{% block breadcrumbs %}{% if not is_popup %}
<div class="breadcrumbs">
<a href="../../../">{% trans "Home" %}</a> ›
@@ -18,10 +18,9 @@
{% if has_absolute_url %}<li><a href="../../../r/{{ content_type_id }}/{{ object_id }}/" class="viewsitelink">{% trans "View on site" %}</a></li>{% endif%}
</ul>
{% endif %}{% endif %}
-<form {% if has_file_field %}enctype="multipart/form-data" {% endif %}action="{{ form_url }}" method="post">{% block form_top %}{% endblock %}
+<form {% if has_file_field %}enctype="multipart/form-data" {% endif %}action="{{ form_url }}" method="post" id="id_{{ opts.module_name }}_form">{% block form_top %}{% endblock %}
<div>
{% if is_popup %}<input type="hidden" name="_popup" value="1" />{% endif %}
{% if opts.admin.save_on_top %}{% submit_row %}{% endif %}
