function getHTTPObject(){
    if (window.ActiveXObject) return new ActiveXObject("Microsoft.XMLHTTP");

    if (window.XMLHttpRequest) return new XMLHttpRequest();

    return null;

    }

    function getInfo(url,vsp){
        var httpObject = getHTTPObject();
        if (httpObject != null) {
            setInfo('<img src="./img/waiting.gif">',vsp);
            httpObject.onreadystatechange = function(){
            if(httpObject.readyState == 4)
                setInfo(httpObject.responseText,vsp);
            }
            httpObject.open("GET", url, true);
            httpObject.send(null);
        }
    }
    
    function setInfo(resp,sp){
         var spanEl = document.getElementById(sp);
         spanEl.innerHTML = resp; 
    }