// gif animado para carregando...
var loadingHtml = "<img src=loader.gif>";
var rootdomain="http://"+window.location.hostname

function ajaxpage(url, containerid){
var page_request = false

// Para Mozilla, Netscape, Safari etc
if (window.XMLHttpRequest) page_request = new XMLHttpRequest();

// Para IE 6,7
else if (window.ActiveXObject){ try { page_request = new ActiveXObject("Msxml2.XMLHTTP")} 
catch (e){ try{ page_request = new ActiveXObject("Microsoft.XMLHTTP")}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){ loadpage(page_request, containerid) }
page_request.open('GET', url, true)
page_request.send(null)
}

function loadpage(page_request, containerid){ 
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}