function kadabra(zap,trg) {
	var obj=document.getElementById(trg);
	if(obj.state=='down'){
	   obj.src="images/nav/triangle_side.png";
	   obj.state='side';
	 }
	else {
	   obj.src="images/nav/triangle_down.png";
	   obj.state='down';
	  }
	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;
	}
  }