I want to highlight some days in the current month. I can do this on the first month, but not on a new month after "next month" or "prev month" is clicked. I tried using onChangeMonthYear event but this executes before the new (or prev) month renders.
any ideas?
Probably your best choice is going to be the beforeShowDay
callback.
http://jqueryui.com/demos/datepicker/#event-beforeShowDay
You can specify a new class name for the cell, based on whatever your date criteria is.