function expand(name) {
	obj = document.getElementById(name);
	if (obj != null) obj.style.display = "block";
}

function collapse(name) {
	obj = document.getElementById(name);
	if (obj != null) obj.style.display = "none";
}

function change(name) {
	obj = document.getElementById(name);
	if (obj.style.display == "none") {
		obj.style.display = "block";
	} else {
		obj.style.display = "none";
	}
}