function toggleList(listNo) {
	var catName = "cat" + listNo;
	var listName = "list" + listNo;
	var curState = document.getElementById(catName).className;
	if (curState == "closed") {
		document.getElementById(listName).style.display = "block";	
		document.getElementById(catName).className = "expanded";
	} else {
		document.getElementById(listName).style.display = "none";	
		document.getElementById(catName).className = "closed";
	}
}