function abrirPag(valor){

var url = valor;




xmlRequest.open("GET",url,true);

xmlRequest.onreadystatechange = mudancaEstado;

xmlRequest.send(null);


if (xmlRequest.readyState == 1) {

document.getElementById("conteudo_mostrar").innerHTML = "<center><img src='http://www.institutofisiomar.com.br/arquivos/loader.gif'></center>";

}


return url;

}


function mudancaEstado(){

if (xmlRequest.readyState == 4){

document.getElementById("conteudo_mostrar").innerHTML = xmlRequest.responseText;

}

}