function $_(n) {
	if(!n) return false;
	if(!document.getElementById(n)) return false;
	return document.getElementById(n)
}

function toggle(id) {
	if ($_(id)) $_(id).style.display = $_(id).style.display == "none" ? "block" : "none";
}

function setItem(s){
	var d = s.getElementsByTagName("div").item(0);
	var st = d.style.display;
	for(i=1; i<=84; i++){
		if (i!=34 && i!=32){
			var id = 'q'+i;
			var c = document.getElementById(id).getElementsByTagName("div").item(0);
			c.style.display="none";
		}
	}
  if (st == ""){
  	d.style.display="none";
  }else{
  	d.style.display="";
  }	
}