Fenster = null;
function popupGallery(immo_id, pic_id) {
    Optionen = 	'toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=yes resizable=0, left=20, top=20, height=650, width=850';
    Fenster = window.open('/?path=/BilderGalerie&immoId='+immo_id+'&picId='+pic_id+'&ws=1', 'Bilder', Optionen);
}

function close()
{
   if (Fenster != null)
     if (!Fenster.closed)
       Fenster.close();
}