/********************************************
 Layer Functions - Hide and Show  layers
 Copyright 2003 by Anthony Hall. Man on Fire Design. http://www.manonfire.com
 You may copy, use and redistribute this code as you wish as long as this header reamins in place.
 The author takes no responsibility for issues that arise from lack of knowledge on installation or setup. 
*******************************************/

var ns4 = (document.layers); 
var ie4 = (document.all && !document.getElementById);
var ie5 = (document.all && document.getElementById);
var ns6 = (!document.all && document.getElementById);




function showA1() {
  if (ns4) document.layers["a1"].visibility = "show";
  if (ie4) document.all.a1.style.visibility = "visible";
  if (ie5) document.all.a1.style.visibility = "visible";
  if (ns6) document.getElementById("a1").style.visibility = "visible";    
}

function hideA1() {
  if (ns4) document.layers["a1"].visibility = "hide";
  if (ie4) document.all.a1.style.visibility = "hidden";
  if (ie5) document.all.a1.style.visibility = "hidden";
  if (ns6) document.getElementById("a1").style.visibility = "hidden";    
}