jquery fullcalendar send custom parameter and refresh calendar with JSON

Question

im trying to use the jquery fullcalendar. The event data comes from the server using JSON. My page has a dropdown element and the fullcalendar div.

What i need is to

Answer 1

I did it using this :

$('#calendar').fullCalendar( 'destroy' );

when I select other option in the dropdown, I don't know if is elegant but works!