function content(valor)
{
    var valor
	var url = valor;

    xmlRequest.open("GET",url,true);    
    xmlRequest.onreadystatechange = mudancaEstadoPrincipal;
    xmlRequest.send(null);

        if (xmlRequest.readyState == 1) {
            document.getElementById("indexCONTEUDO").innerHTML = "";
        }

    return url;
}

function mudancaEstadoPrincipal(){
    if (xmlRequest.readyState == 4){
        document.getElementById("indexCONTEUDO").innerHTML = xmlRequest.responseText;
    }
}