function GetXMLHttp() {
if(navigator.appName == "Microsoft Internet Explorer") {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else {
xmlHttp = new XMLHttpRequest();
}
return xmlHttp;
}

var xmlRequest = GetXMLHttp();

/*---------- INICIO FUNÇÃO ABRIR PÁGINA------------*/

function abrirPag(url){


//Obtém o objeto HTML
objetoHTML=document.getElementById("conteudo");

//Exibe o loader
objetoHTML.innerHTML="";
try{
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}catch(ee){
try{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}catch(e){
try{
xmlhttp = new XMLHttpRequest();
}catch(E){
xmlhttp = false;
}
}
}			
				
xmlhttp.open("GET",url);
xmlhttp.onreadystatechange=function() {
if (xmlhttp.readyState==4){
retorno=unescape(xmlhttp.responseText.replace(/\+/g," "));
objetoHTML.innerHTML=retorno;
}
}

xmlhttp.send(null);

};