var req=null;
function InitXMLHttpRequest() {
	if (window.XMLHttpRequest) {
		req=new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		req=new ActiveXObject("Microsoft.XMLHTTP");
	}
}

function UpdateRate(id, value) {
	InitXMLHttpRequest();
	destination = document.getElementById(id);
	// Load the result from the response page
	if (req) {
		req.onreadystatechange=function() {
			if (req.readyState == 4 && req.responseText!="set") {
				destination.innerHTML=req.responseText;
			}
		}
		req.open("GET", "/update_rate.php?id="+id+"&value="+value, true);
		req.send(null);
	}
}