var Request = new Object();

Request.send = function(url, method, callback, data) {
var req;
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
}
req.onreadystatechange = function()
{
if (req.readyState == 4) {
if (req.status < 400) {
(method=="POST") ? callback(req) : callback(req,data);
} else {
}
}
}
try {
if (method=="POST") {
req.open("POST", url, true);
req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
req.send(data);
} else {
req.open("GET", url, true);
req.send(null);
}
} catch(err){ 
alert("Request Error:" + err);
so_showStat();
}

return req;
}

Request.sendPOST = function(url, data, callback) {
Request.send(url, "POST", callback, data);
}
Request.sendGET = function(url, callback, args) {
return Request.send(url, "GET", callback, args);
}