app/views/items/new.html.erb
<%= render 'manifestations/prepare_book_jacket' %>
<div id="content_detail" class="ui-corner-all">
<h1 class="title"><%= t('page.new', :model => t('activerecord.models.item')) -%></h1>
<div id="content_list">
<%= render 'form' %>
</div>
</div>
<div id="submenu" class="ui-corner-all">
<%- if @item.manifestation -%>
<%= render 'manifestations/book_jacket', :manifestation => @item.manifestation -%>
<%- end -%>
<ul>
<%- if @item.manifestation -%>
<li><%= link_to t('page.back'), manifestation_items_path(@item.manifestation) -%></li>
<%- else -%>
<li><%= link_to t('page.back'), items_path -%></li>
<%- end -%>
</ul>
</div>