// JavaScript Document
function hideNav() {
	var nav = parent.document.getElementById("aNav");
	if (nav.style.display != "none") {
   		nav.style.display = "none";
    }
}
function showNav() {
	var nav = parent.document.getElementById("aNav");
	if (nav.style.display == "none") {
   		nav.style.display = "block";
	}
}