anchor.diff:      var $forgot_password_form = document.querySelector('#forgot_password_form');
       $forgot_password_form.addEventListener('submit', function(event){
         var $button      = $forgot_password_form.querySelector('.request-password-button'),
  -          originalText = $button.textContent;
  +          originalText = $button.textContent,
  +          uniqueId     = $forgot_password_form.querySelector('input[name="pseudonym_session[unique_id_forgot]"]').value.trim();
  +      if (!uniqueId) return false;
         $button.disabled = true;
         $button.textContent = $button.getAttribute('data-text-while-loading')
         event.preventDefault();
  
positive.code:         data: 'authenticity_token=' +
                encodeURIComponent($forgot_password_form.querySelector('input[name=authenticity_token]').value) +
                '&pseudonym_session%5Bunique_id_forgot%5D=' +
                encodeURIComponent($forgot_password_form.querySelector('input[name="pseudonym_session[unique_id_forgot]"]').value),
          success: function(response){
            alert(SHARED_JS_VARS.RESET_SENT);
          },
  
negative.code:     }
      #f1_container {
        position: relative;
        margin: 0 auto;
        padding: 100px 0;
        width: 300px;
        height: 170px;
        z-index: 1;
  