v=1;
layerSwitch01 = function(){
	v =! v;
	vs = (v)?"hidden":"visible";
 document.getElementById("subNav01").style.visibility = vs;
}
layerSwitch02 = function(){
	v =! v;
	vs = (v)?"hidden":"visible";
 document.getElementById("subNav02").style.visibility = vs;
}
layerSwitch03 = function(){
	v =! v;
	vs = (v)?"hidden":"visible";
 document.getElementById("subNav03").style.visibility = vs;
}