// <!--
	function fenster(url,titel,breite,hoehe)
	{
		var url;
		var width=breite;
		var height=hoehe;
		var l = (screen.availWidth - width) / 2;
		var t = (screen.availHeight - height) / 2;
		
		var menu;
		if (titel == 'agb')
			menu = 'yes';
		else
			menu = 'no';
			
		newwindow = window.open(url,titel,"width="+breite+",height=" +hoehe+",screenX="+l+",screenY="+t+",left=" +l+",top="+t+",scrollbars=yes,resizable=1,menubar="+menu+",status=yes");
		newwindow.focus();
	}
//-->