anchor.diff:                     class="form-control form-register-control"
                      placeholder="Imię"
                      autofocus
  -                   value="${param.name}">
  +                   value="${fn:escapeXml(param.name)}">
   
               <% if (errors != null && errors.get("name") != null && errors.get("name").length() > 0) { %>
               <div id="name-error" class="alert alert-danger" role="alert"><%= errors.get("name") %></div>
  
positive.code:                    name="email"
                     class="form-control form-register-control"
                     placeholder="Adres email"
                     value="${param.email}">
  
              <% if (errors != null && errors.get("email") != null && errors.get("email").length() > 0) { %>
              <div id="email-error" class="alert alert-danger" role="alert"><%= errors.get("email") %></div>
  
negative.code: 
      <% if (success != null && success) { %>
      <div id="signin-success" class="alert alert-success" role="alert">Pomyślnie zarejestrowano</div>
      <div class="well">
          <dl class="dl">
              <dt>Imię</dt>
              <dd><c:out value="${param.name}" escapeXml="true"/></dd>
              <dt>Nazwisko</dt>
              <dd><c:out value="${param.surname}" escapeXml="true"/></dd>
              <dt>Wiek</dt>
              <dd><c:out value="${param.age}" escapeXml="true"/></dd>
              <dt>Adres email</dt>
              <dd><c:out value="${param.email}" escapeXml="true"/></dd>
          </dl>
      </div>
      <% } else { %>
      <form id="signin" class="form-signin" action="/" method="post">
          <div id="name-wrapper">
  