function getXMLHttp()
{
  var xmlHttp

  try
  {
    //Firefox, Opera 8.0+, Safari
    xmlHttp = new XMLHttpRequest();
  }
  catch(e)
  {
    //Internet Explorer
    try
    {
      xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch(e)
    {
      try
      {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch(e)
      {
        alert("Your browser does not support AJAX!")
        return false;
      }
    }
  }
  return xmlHttp;
}

function MakeRequest(acao, div, parm){
  var xmlHttp = getXMLHttp();

  xmlHttp.onreadystatechange = function()
  { 
    if(xmlHttp.readyState == 1){
      document.getElementById(div).innerHTML = "<img src=\"http://www.siblon.com.br/images/ajax-loader.gif\"><b>Aguarde...</b>";
    }
    if(xmlHttp.readyState == 4){
      HandleResponse(xmlHttp.responseText,div);
    }
  }

  arrayAcao = acoes(acao, parm);

  xmlHttp.open(arrayAcao[0], arrayAcao[1], true);

  xmlHttp.send(null);
}

function HandleResponse(response,div){
    document.getElementById(div).innerHTML = response;
}