function show(foo) {
	document.getElementById(foo).style.display = "block";
}

function hide(foo) {
	document.getElementById(foo).style.display = "none";
}

function flip(foo) {
	if (document.getElementById(foo).style.display == "none") {
		show(foo);
	} else {
		if (document.getElementById(foo).style.display == "block") {
			hide(foo);
		} else {
			show(foo);
		}
	}
}