function count() {
  var wert = "";
  var i = document.forms['form2'].length;
  var count = 0;
  for (var j = 0; j < i; j++){
    if(document.forms['form2'].elements[j].checked){
      count++;
    }
  }
  
  Elementknoten = document.getElementById('count').innerHTML = ''+count+' Spieler ausgewählt';
  
}