function startSortSearch() {
  var elem = document.getElementById("sortsearch");
  var searchtxt = elem.value;
  if (searchtxt) {
    var url = "http://www.haenseler.ch/en/switzerland/industry/raw_materials/product_range/index_html?firstletter=+&sortsearch="+searchtxt;
    window.location.href = url;
  }
  return false;
}