function showShoutbox() {
        var x=-30;
        var y=-60;
        if (document.layers) {
                x=x+(window.outerWidth-150)/2;
                y=y+(window.outerHeight-300)/2;
        } else {
                x=x+(screen.Width-150)/2;
                y=y+(screen.Height-300)/2;
        }
        if (x<0) x=0;
        if (y>0) y=0;
        var w=window.open("gruesse/grusssch.php","uuu","top="+y+",left="+x+",width=500,height=400,location=0,menubar=0,toolbar=0,status=0,resizable=0,scrollbars=yes");
        w.focus();
        return;
}