function ajaxReq(docelem,ticket) {
  docelem.innerHTML = "<img src='imagens/loader.gif' align='left' height='16' />";
  setTimeout(function() { getAsync(docelem,ticket) }, 2000);
}

function getAsync(docelem,ticket)
{
var xmlhttp;
if (window.XMLHttpRequest)
{xmlhttp=new XMLHttpRequest();}
else
{xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4)
    {
		docelem.innerHTML = xmlhttp.responseText;
    }
  }
var tempURL = "tgo.php?ticketgo=" + ticket;
xmlhttp.open("GET",tempURL,true);
xmlhttp.send();
}