var newWin;

function openNewWin(sURL,sName) {
  var sParams = "height=240,width=320,scrollbars=no";
  //  if newWin exists already, focus it
  if (newWin && newWin.open && !newWin.closed)
    newWin.focus();
  //  else open newWin
  else {
    newWin = window.open(sURL,sName,sParams);
  }
}