var tyru_ovetai;
function ovetai (URL){
  tyru_ovetai = window.open(URL,'ovetai','width=350,height=150,top=10,left=10,' +
    'scrollbars=yes,resizable=yes,directories=no,location=no,menubar=no,' +
    'status=no,titlebar=yes,toolbar=no');
  tyru_ovetai.focus();
}