function ShowHide(id)
{
    var obj = document.getElementById(id);
    if (obj != null)
    {
        if (obj.style.display == "")
            obj.style.display = "none";
        else
            obj.style.display = "";
    }
}

function ShowHideManagement(id)
{
  for (var i = 0; i < management.length; i++) {
    var obj = document.getElementById(management[i]);
    if (id != management[i])
      obj.style.display = "none";
    else
      obj.style.display = "";
  }
}