function $(id){
	return document.getElementById(id);
}
function toggleinfo(id) {
	var pie = $('pie-'+id);
	var info = $('info-'+id);			
	if (info.style.display != 'block') {
		info.style.display = 'block';
		pie.style.display = 'none';
	} else {
		info.style.display = 'none';
		pie.style.display = 'block';		
	}
}