function loadJSON(path, success, error)
{
	var xhr = new XMLHttpRequest();
	xhr.onreadystatechange = function() {
		if (xhr.readyState === XMLHttpRequest.DONE) {
			if (xhr.status === 200) {
				success(JSON.parse(xhr.responseText));
			} else {
				error(xhr);
			}
		}
	};
	xhr.open("GET", path, true);
	xhr.send();
}
 
loadJSON('/cgi-bin/quiz4/quiz4.json',
	function(data) { document.getElementById("count").textContent = data.count; },
	function(xhr) { console.error(xhr); }
);