function cari_portal(_portal,_history,_op) {
  var portal     = _portal;
  var op         = _op;
  var id_history = _history;
  var form = document.getElementById('validform');

  var key  = form.key.value;
  var keywords = form.keywords.value;
  var start = form.start.value;
  var count = form.count.value;
  //alert(id_history);
  link_http('kukm.php?portal='+portal+'&id_history='+id_history+'&op='+op+'&start=1&count='+count+'&key='+key+'&keywords='+keywords,'id_data');
}