anchor.diff:                <div class="span4">
                   <div class="wrapper-padding">
   
  -                  <div class="control-group clearfix">
  -                    <label class="pull-left" for="inputApellido">Apellido</label>
  -                    <%=f.input :last_name, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Apellido", :id => "inputApellido"} %>
  -                  </div>
  -                  <%=f.inputs :for => [:address, f.object.address || Address.new] do |address|%>
  +                  <%=f.inputs :for => [:client, f.object.client || Client.new] do |h|%>
  +
                         <div class="control-group clearfix">
  -                        <label class="pull-left" for="inputCP">Código Postal</label>
  -                        <%=address.input :postcode, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Código Postal", :id => "inputCP"} %>
  -                      </div>
  -                      <div class="control-group clearfix">
  -                        <label class="pull-left" for="inputProvincia">Provincia</label>
  -                        <%=address.input :state, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Provincia", :id => "inputProvincia"} %>
  +                        <label class="pull-left" for="inputApellido">Apellido</label>
  +                        <%=h.input :last_name, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Apellido", :id => "inputApellido"} %>
                         </div>
   
  -                      <div class="control-group clearfix">
  -                        <label class="pull-left" for="inputProvincia">Número</label>
  -                        <%=address.input :number, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Número", :id => "inputProvincia"} %>
  -                      </div>
  +                      <%=h.inputs :for => [:address, h.object.address || Address.new] do |address|%>
  +                          <div class="control-group clearfix">
  +                            <label class="pull-left" for="inputProvincia">Provincia</label>
  +                            <%=address.input :state, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Provincia", :id => "inputProvincia"} %>
  +                          </div>
   
  -                  <% end %>
  +                          <div class="control-group clearfix">
  +                            <label class="pull-left" for="inputProvincia">Número</label>
  +                            <%=address.input :number, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Número", :id => "inputProvincia"} %>
  +                          </div>
  +
  +                      <% end %>
  +
  +                  <%end%>
  +
                     <div class="control-group clearfix">
                       <label class="pull-left" for="inputEmail">Email</label>
                       <%= f.input :email, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Email", :id => "inputEmail"} %>
                     </div>
  -
  -                  <%=f.inputs :for => [:client_info, f.object.client_info || ClientInfo.new] do |h|%>
  -
  -                      <div class="control-group clearfix">
  -                        <label class="pull-left" for="inputDNI">DNI</label>
  -                        <%=h.input :dni, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "DNI" } %>
  -                      </div>
  -
  -                  <% end %>
   
                   </div><!--end wrapper-padding-->
                 </div><!--end span4-->
  
positive.code:               <div class="span4">
                  <div class="wrapper-padding">
  
  
                    <div class="control-group clearfix">
                      <label class="pull-left" for="inputEmail">Nombre</label>
                      <%=f.input :first_name, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Nombre" } %>
                    </div>
  
                    <%=f.inputs :for => [:client_info, f.object.client_info || ClientInfo.new] do |h|%>
  
                        <div class="control-group clearfix">
                          <label class="pull-left" for="inputTelefono">Teléfono</label>
                          <%=h.input :phone_number, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Teléfono" } %>
                        </div>
  
                    <% end %>
  
                    <%=f.inputs :for => [:address, f.object.address || Address.new] do |address|%>
  
                        <div class="control-group clearfix">
                          <label class="pull-left" for="inputDireccion">Dirección</label>
                          <%=address.input :street, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Dirección Completa", :id => "inputDireccion" } %>
                        </div>
  
                        <div class="control-group clearfix">
                          <label class="pull-left" for="inputLocalidad">Piso</label>
                          <%=address.input :floor, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Piso", :id => "inputLocalidad" } %>
                        </div>
  
                        <div class="control-group clearfix">
                          <label class="pull-left" for="inputLocalidad">Localidad</label>
                          <%=address.input :city, :label => false, :input_html => { :class => "pull-right input-medium", :placeholder => "Localidad", :id => "inputLocalidad" } %>
                        </div>
  
                        <div class="control-group clearfix">
                          <label class="pull-left" for="inputPais">País</label>
                          <%=address.input :country, :label => false, :required => true, :as => :select, :prompt => "Seleccione País", :collection => Country.all, :input_html =>{ :style=>"width: 164px;padding-left: 50px;margin-left: 93px;"} %>
                        </div>
                    <% end %>
  
                  </div><!--end wrapper-padding-->
  
negative.code:     <section class="span8">
  
        <header class="out">
          <h2>Información de Usuario</h2>
        </header>
  
        <%= semantic_nested_form_for [@user] do |f|%>
  