anchor.diff:                          
                       </tr>
                   </table>
  +                <%}%>
                </div>
               
                          
  
positive.code:                      if (request.getParameter("taxa")!=null) {
              
              %>
              %>
                       <script>
                          alert("Parâmetro inválido. Digite os dados corretamente.");
                       </script>  
  
negative.code:              </style>
               
               <div class="container">
                   <% if (request.getParameter("taxa") != null || request.getParameter("divida") != null || request.getParameter("n") != null) { %>
                      <table class="table table-hover">
                          <thead>
                      <tr>
  