function popfenster(url,width,height)
	{
	var l = (screen.width - width) / 2;
	var t = (screen.height - height) / 2;
	newwindow = window.open(url,"FENSTER","width="+width+",height="+height+",screenX="+l+",screenY="+t+",left="+l+",top="+t+",scrollbars=0,resizable=0,menubar=no");
	newwindow.focus(); 
	}


	function popfenster_scroll(url,width,height)
	{
	var l = (screen.width - width) / 2;
	var t = (screen.height - height) / 2;
	newwindow = window.open(url,"FENSTER","width="+width+",height="+height+",screenX="+l+",screenY="+t+",left="+l+",top="+t+",scrollbars=1,resizable=0,menubar=no");
	newwindow.focus(); 
	}