var NN = (document.layers ? true : false);
function show(id) {
  if(NN) {
	document.layers.menu.layers['myLayer'+id].visibility="visible" 
	}
  else {
	document.getElementById('myLayer'+id).style.visibility="visible"
//	document.all['myLayer'+id].style.visibility="visible"
	}
}
function hide(id) {
  if(NN) {
	document.layers.menu.layers['myLayer'+id].visibility="hidden" 
	}
  else {
	document.getElementById('myLayer'+id).style.visibility="hidden"
//	document.all['myLayer'+id].style.visibility="hidden"
	}
}

function counter_update()
	{
		if (val==0) { hide(1);hide(2);
			val=10;
//			document.all.counter.value=val;
			setTimeout("counter_update()",1000);
		}
		else
		{
			val=val-1;
//			document.all.counter.value=val;
			setTimeout("counter_update()",1000);
		}
	}
var val=10;
setTimeout("counter_update()",1000);