function openDiv(divname) {
	var elemOpen = document.getElementById( divname );
	elemOpen.style.display = "block";
}
function closeDiv(divname) {
	var elemClose = document.getElementById( divname );
	elemClose.style.display = "none";
}
function toggleDisplay(id) {
	var elem = document.getElementById(id);
	if ((elem.style.display=="") || (elem.style.display=="block")) {
		elem.style.display="none";
	} else if (elem.style.display=="none") {
		elem.style.display="block";
	}
}