// cross-platform compatible function to grab DOM elements by their ID
function getElement(id) {
	var obj = (document.getElementById) ? document.getElementById(id) : document.all[id];
	return obj;
}

// switch out the description with the alternate description
function showAltDesc() {
	var oldChild = getElement("DisplayContainer");
	var newChild = getElement("divAlternateText");
	var parent = oldChild.parentNode;
	var replaced = parent.replaceChild(newChild,oldChild);
	return replaced;
}