function toggleMe(a){
  var i=document.getElementById(a);
  if(!i)return true;
  if(i.style.display=="none"){
    i.style.display="block"
  } else {
    i.style.display="none"
  }
  return true;
}

function expandLeaf(a){
	var z=document.getElementById(a);
	var y=lastOpened;
	var x=a;
	var w=document.getElementById(y);
	if(lastOpened != null){w.style.display="none"}
	if(y==x){
		z.style.display=="none";
		lastOpened=null;
		return true;}
	lastOpened=x;
	if(!z)return true;
	if(z.style.display=="none"){
		z.style.display="block"
	} else {
		z.style.display="none"
	}
	return true;
}