anchor.diff:    <div class="control-group  <%= validation_class %>">
       <%= f.label :password_confirmation, :class => 'control-label '+@required %>
       <div class="controls">
  -      <%= f.password_field :password_confirmation, :class => "input-xxlarge " +@required %>
  +      <%= f.password_field :password_confirmation, :class => "" +@required %>
           <span class="help-in-line">
             <%=errors.join (', ')%>
         </span>
  
positive.code: <div class="control-group <%= validation_class %>">
    <%= f.label :login_id, 'Username', :class => 'control-label required' %>
    <div class="controls">
      <%= f.text_field :login_id, readonly: !@user.new_record?, :class => "input-xxlarge required", required: true %>
      <span class="help-inline" style="display:block;height:0;">
        <%= errors.join (', ') %>
      </span>
  
negative.code:   <div class="control-group <%= validation_class %>">
      <%= f.label :last_name, :class => 'control-label required' %>
      <div class="controls">
        <%= f.text_field :last_name, :class => "required", required: true %>
          <span class="help-in-line">
            <%=errors.join (', ')%>
        </span>
  