Something

// JavaScript Document

function createRequestObject() {
        var ro;
        var browser = navigator.appName;

        if(browser == "Microsoft Internet Explorer"){
                ro = new ActiveXObject("Microsoft.XMLHTTP");
        }else{
                ro = new XMLHttpRequest();
        }
        return ro;
}


var http = createRequestObject();

function addElement(id,page) {
        http.open('get', 'page);
        http.onreadystatechange = handleResponse(id);
        http.send(null);
}

function handleResponse(id) {
        if(http.readyState == 4){
                var response = http.responseText;
                var update = new Array();

                document.getElementById(id).innerHTML = response;
        }
}