<!--JavaScript

    function toggle_visibility6(id,id2,id3,id4,id5) {
       var e = document.getElementById(id);
          e.style.visibility = 'visible';
       var e = document.getElementById(id2);
          e.style.visibility = 'hidden';
       var e = document.getElementById(id3);
          e.style.visibility = 'hidden';
       var e = document.getElementById(id4);
          e.style.visibility = 'hidden';
       var e = document.getElementById(id5);
          e.style.visibility = 'hidden';
    }
// end JavaScript. -->