function nuevoAjax(){
	var xmlhttp=false;
 	try {
 		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
 	} catch (e) {
 		try {
 			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
 		} catch (E) {
 			xmlhttp = false;
 		}
  	}

	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
 		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}
function getContent(pagina){
	var contenedor;
	contenedor = document.getElementById('contenedor');
	ajax=nuevoAjax();
	ajax.open("GET", "inc_"+pagina+".php",true);
	ajax.onreadystatechange=function() {
		if(ajax.readyState == 1){
			contenedor.innerHTML = "<br><br><div align='center'><img src='images/loading.gif' width='25' height='25'></div>";
		}else if (ajax.readyState==4) {
			contenedor.innerHTML = ajax.responseText
		}
	}
	 ajax.send(null)
}
function getContenido(pagina,codigo){
	var contenedor;
	contenedor = document.getElementById('contenedorD');
	ajax=nuevoAjax();
	ajax.open("GET", pagina+"?id="+codigo,true);
	ajax.onreadystatechange=function() {
		if(ajax.readyState == 1){
			contenedor.innerHTML = "<br><br><div align='center'><img src='images/loading.gif' width='25' height='25'></div>";
		}else if (ajax.readyState==4) {
			contenedor.innerHTML = ajax.responseText
		}
	}
	 ajax.send(null)
}