function menu(destino){

var url = 'http://localhost/www-visor/';

	switch(destino)
	{
	case "index":
	  window.location.href=url;
	  break;
	case "presupuestos":
	  window.location.href=url+'contacto';
	  break;
	case "contacto":
	  window.location.href=url+'contacto';
	  break;
	default:
	  window.location.href=url;
	}
	
}