function toggleBlock(label) {
	if (document.getElementbyId) {
		current = (document.getElementById(label).style.display == 'block') ? 'none' : 'block';
		document.getElementById(label).style.display = current;
	}
	else if (document.all) {
		current = (document.all[label].style.display == 'block') ? 'none' : 'block';
		document.all[label].style.display = current;
	}
}