anchor.diff:  
   <%
   
  -   def footer
  -%>
  -  <tr>
  -    <th colspan='11'>
  +   def footer(diff)
  +%>
  +  <tr>
  +    <th><%= t(:diff, :scope => :reports )%></th>
  +    <th colspan='9'>
  +      <%= diff %>
  +    </th>
  +    <th>
         <span class='amount'></span>
       </th>
       <th>
  
positive.code:     <td class='number'>
        <%= num_format(op.amount > 0 ? op.amount : "") %>
      </td>
      
      <td class='number'>
        <%= op.amount < 0 ? op.amount : "" %>
      </td>
  
negative.code:    ledger = nil
  
     
      diff = 0
  
     @ops.each do
       |op| 
  
       if ledger != op.ledger and ledger != nil then
         footer(diff)
       end
  
       if ledger != op.ledger then
  