function toggleDisplay(e, id) {
	var el = document.getElementById(id);
	el.style.display = (el.style.display == 'none')?
		'block' : 'none';
}

function display(e, id, id2) {
	var el = document.getElementById(id);
	el.style.display = 'block';
	var el2 = document.getElementById(id2);
	if (el2) el2.style.display = 'none';
}