Finalmente lo deje ahi
Código:
Calendar.setup(
{
flat : "calendar-container", // ID of the parent element
flatCallback : dateChanged, // our callback function
dateStatusFunc: function(date){ // disable weekend days (Saturdays == 6 and Subdays == 0)
var today = new Date(); //alert(today.getTime());
return date.getDay() == 7 ||
(date.getTime() < today.getTime() - (1 * 24 * 60 * 60 * 1000) ||date.getTime() > today.getTime() + (90 * 24 * 60 * 60 * 1000));
}
}
);
No se puede seleccionar dias anteriores:D gracia a todos