onLine?

	var statusElem = document.getElementById('status')
	setInterval(function () {
	statusElem.className = navigator.onLine ? 'online' : 'offline';
	statusElem.innerHTML = navigator.onLine ? 'online' : 'offline';
	}, 250);
	// better way
	var addEvent = (function() {
	if (document.addEventListener) {
	return function(el, type, fn) {
	if (el && el.nodeName || el === window) {
	el.addEventListener(type, fn, false);
	} else if (el && el.length) {
	for (var i = 0; i < el.length; i++) {
	addEvent(el[i], type, fn);
	}
	}
	};
	} else {
	return function(el, type, fn) {
	if (el && el.nodeName || el === window) {
	el.attachEvent('on' + type, function() {
	return fn.call(el, window.event);
	});
	} else if (el && el.length) {
	for (var i = 0; i < el.length; i++) {
	addEvent(el[i], type, fn);
	}
	}
	};
	}
	})();
	addEvent(window, 'online', function () {
	document.getElementById('vialistener').innerHTML = 'Online';
	});
	addEvent(window, 'offline', function () {
	document.getElementById('vialistener').innerHTML = 'Offline';
	});

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