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();
var return_id = '';
function getTime(element_id)
{
    return_id = element_id;
    http.open('get', '/time/get_time.php');
    http.onreadystatechange = handleResponse;
    http.send(null);
    setTimeout('getTime("' + element_id + '");', 60000); // This refreshes the display every 60000 milliseconds
}
function handleResponse()
{
    if (http.readyState == 4)
    {
        var time = http.responseText;
        document.getElementById(return_id).innerHTML = time;
    }
}