function showTop5(url)
{
    var xmlhttp=false;

    try 
    {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e)
    {
        try 
        {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        } 
        catch (e) 
        {
            xmlhttp = false;
        }
    }

    if (!xmlhttp && typeof XMLHttpRequest!='undefined') 
    {
        xmlhttp = new XMLHttpRequest();
    }

    xmlhttp.open("GET", url, true);
    xmlhttp.onreadystatechange=function() 
    {
        if (xmlhttp.readyState==4)
        {
            document.getElementById('top5content').innerHTML = xmlhttp.responseText;
        }
    }
    xmlhttp.send(null);    
}