javascript:
(function()
{
  var form = document.createElement('form');
      form.setAttribute('method', 'post');
      form.setAttribute('action', 'https://tools.sistrix.de/search');
      form.setAttribute('target', '_blank');

  var input_s = document.createElement('input');
      input_s.setAttribute('name',  'search');
      input_s.setAttribute('value', '');
      input_s.setAttribute('type',  'hidden');
  form.appendChild(input_s);

  var input_q = document.createElement('input');
      input_q.setAttribute('name',  'q');
      input_q.setAttribute('value', window.location.hostname);
      input_q.setAttribute('type',  'hidden');
  form.appendChild(input_q);

  var body = window.document.getElementsByTagName('body')[0] ||
             window.document.childNodes[1] ||
             window.document.childNodes[0];
  body.appendChild(form);

  form.submit();
})();