function toggle_navsubs(prefix,count)
{
	var target = ""
	
	//determine the current display state
	var state = document.getElementById("ni_" + prefix + "_1").style.display;
	
	//call sub functions
	if(state != "block")
	{
		open_navsubs(prefix,count)
	}else
	{
		close_navsubs(prefix,count)
	}
}
function close_navsubs(prefix,count)
{
	var target = ""
	
	//change the arrow
	document.getElementById("nh_" + prefix).style.backgroundImage = "url(/interiors/arrow1.gif)"
	
	//show/hide the nav suboptions
	for(i=0;i<count;i++)
	{
		target = "ni_" + prefix + "_" + (i + 1)
		document.getElementById(target).style.display="none";
	}
}
function open_navsubs(prefix,count)
{
	var target = ""
	
	//change the arrow
	document.getElementById("nh_" + prefix).style.backgroundImage = "url(/interiors/arrow2.gif)"
	
	//show/hide the nav suboptions
	for(i=0;i<count;i++)
	{
		target = "ni_" + prefix + "_" + (i + 1)
		document.getElementById(target).style.display="block";
	}
}
function close_all_navsubs(opener)
{
	//var tell = opener
	var items = new Array();
	
	items['patient'] = 7;
	items['dining'] = 2;
	items['reception'] = 2;
	items['living'] = 4;
	items['other'] = 3;
	items['window'] = 3;
	
	
	//close_navsubs('patient',7);
	//close_navsubs('dining',2);
	//close_navsubs('reception',2);
	//close_navsubs('living',4);
	//close_navsubs('other',3);
	//close_navsubs('window',3);
	
	for(n in items)
	{
		if(opener == n || opener == 'all')
		{
			open_navsubs(n, items[n]);
		}else
		{
			close_navsubs(n, items[n]);
		}
	}
	//document.getElementById('test').innerHTML = tell
	
}