function createRequestObject3() {
    var ro3;
    var browser3 = navigator.appName;
    if(browser3 == "Microsoft Internet Explorer"){
        ro3 = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro3 = new XMLHttpRequest();
    }
    return ro3;
}

var http3 = createRequestObject3();

function save_ip(ip) {
    http3.open('get', 'aj/save_ip.php?ip='+ip);
    //http3.onreadystatechange = handleResponse3;
    http3.send(null);
}