var oldId = "";

function swapHTML(id) {
	var el = document.getElementById(id);
	if (oldId != "") {
		var oldEl = document.getElementById(oldId);
		oldEl.style.display = "none";
		el.style.display = "block";
	} else {
		var oldEl = document.getElementById("FeatureNews1");
		oldEl.style.display = "none";
		el.style.display = "block";
	}
	oldId = id;
}