function info(url,fenster,height,width)
{
	if (isNaN(height))
		height=400;
	if (isNaN(width))
		width=340;
	var popupURL = url+".htm";
	var popup = window.open(popupURL,fenster,"toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width="+width+",height="+height+",top=50,left=50");
}