function Toggle(item) {
   obj = document.getElementById(item);
   visible = (obj.style.display != "none")
   key = document.getElementById("x" + item);
   if (visible) {
     obj.style.display = "none";
     key.innerHTML = "show the details [+]";
   } else {
      obj.style.display = "block";
      key.innerHTML = "hide the details [-]";
   }
}