function chDiv(putId,setClass)
{
  document.getElementById(putId).setAttribute('class',setClass);
}

function swap(id)
{
  obj = document.getElementById(id);
  if(obj.style.visibility == "visible")
  {
    obj.style.visibility = "hidden";
  }
  else
  {
    obj.style.visibility = "visible";
  }
  

}


function show(id)
{
  obj = document.getElementById(id);
  obj.style.visibility = "visible";
}

function hide(id)
{
  obj = document.getElementById(id);
  obj.style.visibility = "hidden";
}