/*
Expand this year, showing its months, and "close" the other years. This requires
that the global array ArchiveYears is already defined. It contains the years with
entries, in decreasing order.
*/

function expandYear(year) {
	var i, olId, display;

	for (i=0; i<LadsEntryYears.length; i++) {
		olId = "ol-" + LadsEntryYears[i];
		display = (year == LadsEntryYears[i]) ? '' : 'none';
		setDisplay(olId, display);
	}
}

/* --- all-purpose functions --------------------------------------*/

function getElement(elemId) {
	if (document.getElementById && document.getElementById(elemId))
		return document.getElementById(elemId);
	else if (document.all && document.all(elemId))
		return document.all(elemId);
	else
		return false;
}

function getStyleObject(elemId) {
	var elem = getElement(elemId);

	return (elem) ? elem.style : false;
}

function setDisplay(elemId, value) {
	var styleObj = getStyleObject(elemId);
	if (styleObj)
		styleObj.display = value;
}