function updateFrontend(e, xml_req)
{
	obj = document.getElementById("fe-light").object;
	if( xml_req.ready_state == 4 && xml_req.status == 200 ) {
		// Indicator goes light
		obj.setValue(1);
	}
	else {
		// Indicator goes red
		obj.setValue(20);
	}
}

var xml_request;
function checkFrontend()
{
	xml_request = new XMLHttpRequest();

	xml_request.onload = function(e) {updateFrontend(e, xml_request);}
	xml_request.overrideMimeType("text/xml");
	xml_request.open("GET", "http://mog.com/index.html");
	xml_request.setRequestHeader("Cache-Control", "no-cache");
	xml_request.send(null);
}