jQuery(document).ready(
   function(){
     var message= Liferay.Popup(
        {
          width:800,
          height:450,
          modal:true,
          title:"",
          noTitleBar:false,
          center:true
        }
     );
     url="/html/pages/ubicacion.html";
     AjaxUtil.update(url,message,{onComplete: function(){Liferay.Popup.center()}});
   }
);