function setField(field, val) {
  alert(cmd);

  var fld = "parent.smain.document.sFrm." + field;
  var cmd = fld + ".value='" + val + "'";


  eval(cmd);
};

function clearField(field) {
//  setField(field, '');
  var fld = "document.sFrm." + field;
  var cmd = fld + ".value=''";
  eval(cmd);
};