function ablak(kep, szelesseg, magassag)
{
  wtop=(screen.height-magassag)/2;
  wleft=(screen.width-szelesseg)/2;
  ujablak1=window.open('kep.php?kep='+kep,'kep','scrollbars=no,toolbar=no,location=no,directories=no,menubar=no,status=no,width='+szelesseg+',height='+magassag+',left='+wleft+',top='+wtop);
}

function termek(dir, kep)
{
  szelesseg=640;
  magassag=640;
  wtop=(screen.height-magassag)/2;
  wleft=(screen.width-szelesseg)/2;
  ujablak1=window.open('termek.php?dir='+dir+'&kep='+kep,'termek','scrollbars=no,toolbar=no,location=no,directories=no,menubar=no,status=no,width='+szelesseg+',height='+magassag+',left='+wleft+',top='+wtop);
}