function fenster1()
         {
        var win;
        win=window.open("pferd1.html","text","height=400,width=530,left=400,top=100,resizable=yes");
        }

        function fenster2()
         {
        var win;
        win=window.open("pferd2.html","text","height=400,width=530,left=400,top=100,resizable=yes");
        }
        function fenster3()
         {
        var win;
        win=window.open("magnet1.html","text","height=540,width=590,left=400,top=100,resizable=yes");
        }
         function fenster4()
         {
        var win;
        win=window.open("magnet2.html","text","height=395,width=420,left=400,top=100,resizable=yes");
        }
          function fenster5()
         {
        var win;
        win=window.open("katz1.html","text","height=550,width=390,left=400,top=100,resizable=yes");
        }

         function fenster6()
         {
        var win;
        win=window.open("katz2.html","text","height=570,width=400,left=400,top=100,resizable=yes");
        }
         function fenster7()
         {
        var win;
        win=window.open("katz3.html","text","height=545,width=550,left=300,top=100,resizable=yes");
        }