var weite,hoehe,datei;
function oeffneFenster(weite,hoehe,datei)
        {
        var Fenstername = "";
        Fenstername = "Aktuelles";
        var attribute = "";
        var t_width = screen.availWidth;
        t_width = t_width/2;
        var x_pos = t_width - (weite/2);
        if (x_pos < 0 || screen.availWidth < weite) x_pos = 0;
         attribute = "width="+weite+",height="+hoehe+",scrollbars=no,resizable=yes,left="+x_pos+",top=94";
        Fenster = window.open(datei, Fenstername, attribute);
        Fenster.focus();
        }