anchor.diff:            </p>
   
             <div class="plan-sign-up">
  -            <script src="<%= asset_path('paypal-button.min.js') %>?merchant=<%= "#{PAYPAL['paypal_merchant']}" %>"
  -                    data-button="donate"
  -                    data-name="Airesis"
  -                    data-number="1"
  -                    data-size="small"
  -                    data-currency="EUR"
  -                    data-amount="50.00"
  -                    data-quantity="1"
  -                    data-lc="<%= I18n.locale %>"
  -                    data-env="<%= "#{Rails.env == 'production' ? 'www' : 'sandbox'}" %>">
  -            </script>
  +            <%= paypal_button(size: 'small', amount: '50.00') %>
             </div>
           </div>
         </li>
  
positive.code:           </p>
  
            <div class="plan-sign-up">
              <script src="<%= asset_path('paypal-button.min.js') %>?merchant=<%= "#{PAYPAL['paypal_merchant']}" %>"
                      data-button="donate"
                      data-name="Airesis - Scegli di partecipare"
                      data-number="1"
                      data-size="small"
                      data-currency="EUR"
                      data-amount="5.00"
                      data-quantity="1"
                      data-lc="<%= I18n.locale %>"
                      data-env="<%= "#{Rails.env == 'production' ? 'www' : 'sandbox'}" %>">
              </script>
            </div>
          </div>
        </li>
  
negative.code:           </p>
  
            <div class="plan-sign-up">
              <%= paypal_button(size: 'small') %>
            </div>
          </div>
        </li>
  