function show(id) {}
function hide(id) {}
function shToggle(id) {
  var obj = "";
  if(document.getElementById)
	obj = document.getElementById(id).style;
  else if(document.all)
	obj = document.all[id];
  else if(document.layers)
	obj = document.layers[id];
  else
	return 1;

  if(obj.display == "")
	obj.display = "none";
  else if(obj.display != "none")
	obj.display = "none";
  else
	obj.display = "block";
}