function doExpand()
{
	var layers = ["physical", "earnings", "ethnicity", "language", "college"];

	for (a=0; a<layers.length; a++)
	{
		if(window.document.getElementById(layers[a]+"-open").value == "true")
		{
			enableLayer(layers[a]);
		}
	}
}

function addExpand(id)
{
	window.document.getElementById(id+"-open").value = true;
}


function anySelected(name)
{
//alert("any");
	var c = window.document.getElementById(name+"0");
	if(c.checked)
	{
		var m = window.document.getElementById(name+"_max").value;
		
		// Any checked, so uncheck the rest.
		a=1;
		more=true;
		for(a=1; a<m; a++)
		{
			c = window.document.getElementById(name+a);
			if(c==null || c==undefined)
			{
				more = false;
			}
			else
			{
				c.checked = false;
			}
		}
	}
}


function otherSelected(name)
{
	var c = window.document.getElementById(name+"0");
	if(c.checked)
	{
		c.checked = false;
	}
}