function clear_input(){
  var f = document.Form_Free;
  f.q.value = '';
  f.st[0].checked = true;
  f.pf.value = '';
  f.pt.value = '';
  f.o[0].selected = true;
  return false;
}
function search_open(){
  document.getElementById("variationClose").style.display = 'none';
  document.getElementById("searchOpen").style.display = 'block';
}