var myTWin = window.myTWin;

function OpenMyWin(link, winName, options) {
  var retValue = true;
  if (myTWin != null && !myTWin.closed) {
    myTWin.focus();
    myTWin.location.href = link.href;
  }
  else {
    myTWin = window.open(link.href, winName, options);
    if (myTWin == null || typeof(myTWin) == "undefined")
      retValue = false;
    else {
      link.target = winName;
      myTWin.focus();
    }
  }
  return retValue;
}