// JavaScript Document

function toggleLayer ( whichLayer ) {
	document.getElementById('ca').style.display = "none";
	document.getElementById('fl').style.display = "none";
	document.getElementById('hi').style.display = "none";
	document.getElementById('il').style.display = "none";
	document.getElementById('in').style.display = "none";
	document.getElementById('md').style.display = "none";
	document.getElementById('ny').style.display = "none";
	document.getElementById('or').style.display = "none";
	document.getElementById('va').style.display = "none";
	document.getElementById('wi').style.display = "none";
	document.getElementById('wy').style.display = "none";
	document.getElementById('cn').style.display = "none";
	document.getElementById('gr').style.display = "none";
	document.getElementById('uk').style.display = "none";
	document.getElementById('nm').style.display = "none";
	document.getElementById('nv').style.display = "none";
	document.getElementById('tx').style.display = "none";
	document.getElementById('wa').style.display = "none";
	document.getElementById('mi').style.display = "none";
	var elem, vis;
	if ( document.getElementById ) 
		elem = document.getElementById( whichLayer );
	else if ( document.all ) 
		elem = document.all[whichLayer];
	else if ( document.layers ) 
		elem = document.layers[whichLayer];
	vis = elem.style;
	vis.display = 'block';
}