function criaXMLHttp() {
 if (typeof XMLHttpRequest != "undefined")
    return new XMLHttpRequest();

 else if (window.ActiveXObject){
    var versoes = ["MSXML2.XMLHttp.5.0",
    "MSXML2.XMLHttp.4.0", "MSXML2.XMLHttp.3.0",
    "MSXML2.XMLHttp", "Microsoft.XMLHttp"
    ];
 }
 for (var i = 0; i < versoes.length; i++){
    try{
        return new ActiveXObject(versoes[i]);
    }catch (e) {}
 }
 throw new Error("Seu browser nao suporta AJAX");
}

  function makerequest(serverpage, objID, linha){
    xmlhttp = criaXMLHttp();
        var obj = document.getElementById(objID);
        xmlhttp.open("GET", serverpage, true);
        xmlhttp.onreadystatechange=function(){
            if(xmlhttp.readyState == 4 && xmlhttp.status == 200){
                obj.innerHTML = xmlhttp.responseText;
                // mostrar o div
                obj.style.display="block";
                //colocar o div por baixo da linha
                obj.style.top=418;
                document.getElementById('center').className="center_tranps";
            }
        }
        xmlhttp.send(null);

  }