addLoadEvent(function() {
	$("button_latest").onclick = updateAggBoxes;
	$("button_challenges").onclick = updateAggBoxes;
	$("button_needs").onclick = updateAggBoxes;
	$("button_offers").onclick = updateAggBoxes;
	
	updateAggBoxes();
});

function updateAggBoxes() {
	if (!this.id) {
		elm = $("button_latest");
	} else {
		elm = this;
	}
	
	$("button_latest").className = "";
	$("button_challenges").className = "";
	$("button_needs").className = "";
	$("button_offers").className = "";

	elm.className = "ON";
	var label = elm.id.slice(7);
	
	$("browse_latest").style.display = "none";
	$("browse_challenges").style.display = "none";
	$("browse_needs").style.display = "none";
	$("browse_offers").style.display = "none";
	
	$("browse_" + label).style.display = "block";
	
	return false;
}