function open_win(url,winname,w,h,winprop)
{
        if(w==0){w=420}
        if(h==0){h=420}
        if(winname==""){winname="_blank"}
        if(winprop==""){winprop="toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=no,copyhistory=no"}
        if(top.frames[winname]){winprop=""} // wir wollen nicht ein vorhandenes frameset z.b. ueberschreiben...
        popups = window.open(url,winname,"width="+w+",height="+h+","+winprop)
        if (document.layers || document.all || document.getElementById) {
                //if (popup.opener == null) {popups.opener = window}
                popups.focus();
        }
}




// -->