// jk
function showhide(layer_ref) 
{

	var state = 'none';

	if (document.all) 
	{ //IS IE 4 or 5 (or 6 beta)
		eval("state = document.all." + layer_ref + ".style.display");
	}

	if (document.layers) 
	{ //IS NETSCAPE 4 or below
		state = document.layers[layer_ref].display;
	}

	if (document.getElementById &&!document.all) {
		hza = document.getElementById(layer_ref);
		state = hza.style.display;
	}

	if (state == 'block') 
	{	state = 'none';
	}
	else 
	{	state = 'block';
	}

	if (document.all) 
	{ //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.display = state");
	}

	if (document.layers) 
	{ //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}

	if (document.getElementById &&!document.all) {
		hza = document.getElementById(layer_ref);
		hza.style.display = state;
	}
};

function hideshow(layer_ref) 
{

	var state = 'block';

	if (document.all) 
	{ //IS IE 4 or 5 (or 6 beta)
		eval("state = document.all." + layer_ref + ".style.display");
	}

	if (document.layers) 
	{ //IS NETSCAPE 4 or below
		state = document.layers[layer_ref].display;
	}

	if (document.getElementById &&!document.all) {
		hza = document.getElementById(layer_ref);
		state = hza.style.display;
	}

	if (state != 'none') 
	{	state = 'none';
	}
	else 
	{	state = 'block';
	}

	if (document.all) 
	{ //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.display = state");
	}

	if (document.layers) 
	{ //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}

	if (document.getElementById &&!document.all) {
		hza = document.getElementById(layer_ref);
		hza.style.display = state;
	}
};