Source for demo by antimatter15.
X=function(u,f,d,x){x=new(window.ActiveXObject||XMLHttpRequest)('Microsoft.XMLHTTP')
x.open(d?'POST':'GET',u,1);x.setRequestHeader('Content-type','application/x-www-form-urlencoded');x.onreadystatechange=function(){x.readyState>3&&f&&f(x.responseText,x)};x.send(d)}