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;
	  	}
      }