function loadBox()
{
   boxHttp=messageAjax();
   if (boxHttp==null)
   {
    alert ('Your Browser doesnt support ajax!');
    return;
    }
    var url='box.php';
    var sc ="dave=dave";
    boxHttp.open('POST', url, true);
    boxHttp.setRequestHeader('If-Modified-Since', 'Sat, 1 Jan 2000 00:00:00 GMT');
    boxHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');
    boxHttp.setRequestHeader('Content-length', sc.length);
    boxHttp.setRequestHeader('Connection', 'close');
    boxHttp.onreadystatechange=updateDetails;
    boxHttp.send(sc);

}


function updateDetails()
{
    if (boxHttp.readyState==4 && boxHttp.status == 200)
    {
	document.getElementById("showDetails").innerHTML=boxHttp.responseText 
    }
}


function messageAjax()
{
    var boxHttp=null;
    try
    {
        // Firefox, Opera 8.0+, Safari
        boxHttp=new XMLHttpRequest();
    }
    catch (e)
    {
        // Internet Explorer
        try
        {
            boxHttp=new ActiveXObject('Msxml2.XMLHTTP');
        }
        catch (e)
        {
            boxHttp=new ActiveXObject('Microsoft.XMLHTTP');
        }
    }
    return boxHttp;
}