function have_navbar() {
	if (document.cookie.indexOf("navbar") == -1) {
		return 1;
	}
	return (document.cookie.charAt(document.cookie.length - 1) == "1");
}

function toggle_navbar() {
	if (have_navbar()) {
		document.cookie = "navbar=0";
		document.getElementById("navbar_button").src = "img/arrowright.png";
		document.getElementById("navbar").style.display = "none";
	} else {
		document.cookie = "navbar=1";
		document.getElementById("navbar_button").src = "img/arrowleft.png";
		document.getElementById("navbar").style.display = "block";
	}
}

function test_on() {
	document.getElementById("test").style.display = "block";
	document.getElementById("test_more").style.display = "none";
}

function test_off() {
	document.getElementById("test").style.display = "none";
	document.getElementById("test_more").style.display = "inline";
}