function oeffneFenster2(txt)
{
    var kleinesfenster;
    if ((kleinesfenster == null)||(kleinesfenster.closed)) 
     { kleinesfenster = window.open(txt,"Hallochen",
                        "width=600,height=400,resizable=yes,status=no,"+
                        "menubar=yes,location=no,scrollbars=yes,toolbar=no");
       kleinesfenster.opener = top;
       kleinesfenster.focus(); 
     } 
    else { kleinesfenster.focus(); }
}// JavaScript Document