function toggleMe(a){
  var next=document.getElementById(a);
  var b=new String();
  b= a-1;
  var prev=document.getElementById(b);
  if(!next)return true;
  if(next.style.display=="none"){
    next.style.display="block"
    prev.style.display="none"
    window.scrollTo(0,0);
  } else {
    next.style.display="none"
  }
  return true;
}