function toggledisplay (id){
	  if (document.getElementById) {
	    var mydiv = document.getElementById(id);
	    mydiv.style.display = (mydiv.style.display=='block'?'none':'block');
	  }
	}

function popup_s(url, breite, hoehe)
{
        screenY = 0;
        screenX = 0;
        hwin = open(url,'fenster','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=' + breite + ',height=' + hoehe + ',screenX=' + screenX + ',screenY=' + screenY);
}

function popup (url, breite, hoehe)
{
	screenY = 0;
	screenX = 0;
	hwin = open(url,'bilder','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=' + breite + ',height=' + hoehe + ',screenX=' + screenX + ',screenY=' + screenY);
}