var http_request = false;
var nomediv;

function ajax(url, nomeDiv)
{
    http_request = false;
    nomediv = nomeDiv;


    if (window.XMLHttpRequest) { // Mozilla, Safari,...

        http_request = new XMLHttpRequest();

        if (http_request.overrideMimeType) {
            // http_request.overrideMimeType('text/html; charset=UTF-8');
               http_request.overrideMimeType('text/html; charset=iso-8859-1');

           // http_request.overrideMimeType('text/html; charset=UTF-8');

        // See note below about this line
        }



    } else if (window.ActiveXObject) { // IE


        try
        {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch(e)
        {
            try
            {
                http_request = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch(e)
            {
                try
                {
                    http_request = new ActiveXObject("MSXML2.XMLHTTP.5.0");
                }
                catch(e)
                {
                    try
                    {
                        http_request = new ActiveXObject("MSXML2.XMLHTTP.4.0");
                    }
                    catch(e)
                    {
                        try
                        {
                            http_request = new ActiveXObject("MSXML2.XMLHTTP.3.0");
                        }
                        catch(e)
                        {
                            http_request = false;
                        }
                    }
                }
            }
        }

    } // fim else



    if (!http_request)
    {
        alert('Giving up :( Cannot create an XMLHTTP instance');
    }

    // http_request.setRequestHeader("Content-Type", "text/html; charset=UTF-8");

    
    http_request.open('GET', url, true);
    http_request.send(null);
    http_request.onreadystatechange = processar;


}

function processar()
{
    if (http_request.readyState == 4)
    {
        if (http_request.status == 200)
        {
            //  alert(http_request.responseText);

            var resultado = http_request.responseText;

            document.getElementById(nomediv).innerHTML = resultado;
            document.getElementById(nomediv).style.display = '';


        }
        else
        {
            alert('Erro: '+http_request.status);
        }
    }

}