function abrirPag(valor){
	    var url = valor;
	
	    xmlRequest.open("GET",url,true);    
	    xmlRequest.onreadystatechange = mudancaEstado;
	    xmlRequest.send(null);
	
	        if (xmlRequest.readyState == 1) {
	            document.getElementById("d1").innerHTML = "<img src='loader.gif'>";
	        }
	
	    return url;
	}
	
	function mudancaEstado(){
	    if (xmlRequest.readyState == 4){
	        document.getElementById("d1").innerHTML = xmlRequest.responseText;
	    }
	}