U.Helper

form {visibility:hidden}

$(document.addform).css('visibility', 'visible');

<script type="text/javascript">
  $.get('/index/8', function ( data ) {
  if ( parseInt( $('a[href*="load/0-0"] b', data).html() ) > 5 ) {
  $(document.addform).css('visibility', 'visible');
      $('#addEntForm').html('');
  }
  });
  </script>

<style type="text/css">
form {visibility:hidden}
</style>