function hide(id) {
    if (document.getElementById){
      obj = document.getElementById(id);
      if (obj.style.display == ""){
        obj.style.display = "none";
	                        }
                               }
                } 

  function show(id) {
    if (document.getElementById){
      obj = document.getElementById(id);
      if (obj.style.display == "none")
	  {obj.style.display = "";}
	  else
	   if (obj.style.display == ""){
        obj.style.display = "none";
	                        }
                               }
                }