anchor.diff:                fixed: true
               }
             });
  -          $('a#<%= item.shelf.name %>').qtip({
  +          $('a#shelf_<%= item.shelf.name %>').qtip({
               position: {
                 my: 'bottom left',
                 at: 'top center'
  
positive.code:     <tr>
        <td>
          <%- if item.item_identifier? -%>
            <%= link_to item.item_identifier, item -%>
          <%- else -%>
            (<%= link_to t('item.no_number'), item -%>)
          <%- end -%>
        </td>
        <td>
          <%= link_to(item.shelf.library.display_name.localize, item.shelf.library, :id => item.shelf.library.name) %>
        </td>
        <td>
          <%= link_to(item.shelf_display_name.localize, item.shelf, :id => item.shelf.name)-%>
          <%= render 'items/shelf_picture', :item => item -%>
        </td>
        <td>
  
negative.code:     <% if can? :update, item %>
        <script>
          $(document).ready(function(){
            $('a#item_identifier_<%= item.item_identifier %>').qtip({
              position: {
                my: 'bottom left',
                at: 'top center'
              },
              content: 'item_identifier: <%= item.item_identifier %>',
              hide: {
                fixed: true
              }
            });
            $('a#library_<%= item.shelf.library.name %>').qtip({
              position: {
                my: 'bottom left',
                at: 'top center'
  