function hidediv() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('circ-subnav').style.visibility = 'hidden';
	}
	else {
		if (document.layers) { // Netscape 4
			document.hideshow.visibility = 'hidden';
		}
		else { // IE 4
			document.all.hideshow.style.visibility = 'hidden';
		}
	}
}

function showdiv() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('circ-subnav').style.visibility = 'visible';
	}
	else {
		if (document.layers) { // Netscape 4
			document.hideshow.visibility = 'visible';
		}
		else { // IE 4
			document.all.hideshow.style.visibility = 'visible';
		}
	}
} 

function toggle() {
	var ele = document.getElementById("circ-subnav");
	if(ele.style.display == "block") {
    		ele.style.display = "none";
	}
	else {
		ele.style.display = "block";
	}
}