// Otevreni do noveho okna
var myTWin = window.myTWin;

function OpenMyWin(link)
{
  link.target = '_MyWin';
  if (myTWin != null && !myTWin.closed)
  {
    myTWin.focus();
    myTWin.location.href = link.href;
  }
  else
  {
    myTWin = window.open(link.href,'_MyWin');
    if (myTWin != null)
      myTWin.focus();
  }
  return myTWin;
}