Update end date calendar based on selected start date

[ssd27may]

I would like to know how we can disable end date based on start date selected. For e.g. if i select todays date as start date i need all dates one month after today to be disabled in end date calendar.

I can do this using onrender cell event and it is working fine. However this works fine once during page load, after the datepicker is rendered and i change a start date I am not able to update end date calendar based on selected start date.