// JavaScript Document
function kadabra(zap) {
 
 if (document.getElementById) {
 
  var abra = document.getElementById(zap).style;
 
  if (abra.display == "block") {
 
   abra.display = "none";
 
   } else {
 
   abra.display = "block";
 
  } 
 
  return false;
 
  } else {
 
  return true;
 
 }
 
}