function popupoeffnen(fenster_url, w, h)
{
	VideoFenster = window.open(fenster_url, '', 'top=20,left=20,resizable=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,toolbar=0,width='+w+',height='+h+',screenX=0,screenY=0');
}