function MM_openBrWindow(theURL,winName,features)
{
	window.open(theURL,winName,features);
}

function toggle_visibility(id)
{
	var e = document.getElementById(id);
	if(e.style.display == 'none')
		e.style.display = 'block';
	else
		e.style.display = 'none';
}

var state = 'none'; 

function showhide(layer_ref)
{ 
	if (state == 'block')
	{ 
		state = 'none'; 
	} 
	else
	{ 
		state = 'block'; 
	} 
	if (document.all) 
	{ 
		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; 
	} 
}