function updateResults(url, id,pageNumber)
{
    try
    {
        var xmlRequest=GetXmlHttpObject();

        xmlRequest.onreadystatechange = function()
        {
            if (xmlRequest.readyState == 4)
            {
                if (xmlRequest.status != 200)
                {
                    return;
                }
                var resultPage =  document.getElementById(id);
                resultPage.innerHTML = xmlRequest.responseText;
            }
        } 
       xmlRequest.open("GET",url + "&page={" + pageNumber + "}",true);
       xmlRequest. 
        setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" );
       xmlRequest.send(null);
    } 
    catch (e)  
    { 
    }
}

function GetXmlHttpObject()
{
    try
    {
        xmlHttp=new XMLHttpRequest();
        xmlHttp.overrideMimeType('text/xml');
    }
    catch (e)
    {
        try
        {
            xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e)
        {
            xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    return xmlHttp;
}