var picture = null;

	function oeffnepicture(url, format)
	{
        if (format == "quer")
        {
            wid = 620;
            hei = 510;
        }
        else
        {
            wid = 470;
            hei = 670;
        }
        
		picture = window.open(url,"picture"+format,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width='+wid+',height='+hei);
	}

	function bild(url, format)
	{
		if (picture != null)
		{
			if (picture.closed)
			{
				oeffnepicture(url, format);
				if (window.focus) {picture.focus()}
			}
			else
			{
				oeffnepicture(url, format);
				if (window.focus) {picture.focus()}
			}
		}
		else
		{
			oeffnepicture(url, format);
			if (window.focus) {picture.focus()}
		}
	}