Hi, great project...
found some this buggy behavior...
when im doing this:
$('#datepicker_calendar').DatePickerSetDate([from, to], true);
the true parameter causing a bug which makes a click on the month name to react weird: instead selecting the whole selected month it is selecting something like 30 days from the current "from" days that currently selected on the calender.
EDIT
seems to be my mistake, one mistake leads to the buggy behavior