function popup( seite )
{
  var nwl = (screen.width-600)/2;
  var nwh = (screen.height-400)/2;
  popUp=window.open( seite, 'NewWindows', 'toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,resizable=no,width=690,height=530,left='+nwl+',top='+nwh+'' );
  popUp.window.focus();
}

function set_aktion( wert )
{
	document.form1.aktion.value=wert;
	document.form1.submit();
}