function Toggle(id) {

  spanid1 = "ToggleRow_"+id;
  spanid2 = "ToggleImg_"+id;
  val = document.getElementById(spanid1).style.display;
  if (val == "none")
  {
    document.getElementById(spanid1).style.display = "block";
    document.getElementById(spanid2).src = "images/+.jpg";
    document.getElementById(spanid2).alt = "Klapptext öffnen";
  }
  else
  {
    document.getElementById(spanid1).style.display = "none";
    document.getElementById(spanid2).src = "images/-.jpg"
    document.getElementById(spanid2).alt = "Klapptext schließen";
  }
}