function getStyleObj(id){
        var obj = null;
        if(document.getElementById){
                obj = document.getElementById(id);
        }else if(document.all){
                obj = document.all[id];
        }else if(document.layers){
                obj = document.layers[id];
        }
        return (obj && obj.style) || obj;
}

function kadabra(zap) {
 var abra = getStyleObj(zap);
 if (abra) {
  if (abra.display == "block") {
   abra.display = "none";
  } else {
   abra.display = "block";
  }
  return true;
 } else {
  return false;
 }
}

function kadabra_visibility(zap) {
 var abra = getStyleObj(zap);
 if (abra) {
  if (abra.visibility == "visible") {
   abra.visibility = "hidden";
  } else {
   abra.visibility = "visible";
  }
  return true;
 } else {
  return false;
 }
}

function kadabra_force_hide(zap) {
 var abra = getStyleObj(zap);
 if (abra) {
  abra.display = "none";
  return true;
 }
 return false;
}