function createRequestObject_Data()
{
	var request = false;
    try
    {
        // Mozilla/Safari
        if (window.XMLHttpRequest)
        {
            request = new XMLHttpRequest();
        }
        // IE
        else if (window.ActiveXObject)
        {
            request = new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    catch (e)
    {
        alert(e);
    }
    if(!request )
    {
        alert("Impossibile creare l'oggetto XHR.");
    }
    return request;
}

var http_Data = createRequestObject_Data();

function getCurrData()
{
    http_Data.open('GET', '/cm/inc/get_data.asp', true);
    http_Data.onreadystatechange = handleResponse_Data;
    http_Data.send(null);
}

function handleResponse_Data()
{
    if(http_Data.readyState == 4)
    {
       document.getElementById("current_data").innerHTML = http_Data.responseText;
    }
}