For those facing disable previous time from dateA - dateB which dateB cannot greater than dateA. I would like to share my code here to help :)
var calImg = '@Url.Content("~/Images/ico_calendar.gif")';
var dtFormat = 'd-M-yy';
var showType = "button";
var dates = $("#newsDateFrom, #newsDateTo").datepicker({
dateFormat: dtFormat,
showOn: showType,
buttonImage: calImg,
buttonImageOnly: true,
numberOfMonths: 3,
onSelect: function (selectedDate) {
var option = this.id == "newsDateFrom" ? "minDate" : "maxDate",
instance = $(this).data("datepicker"),
date = $.datepicker.parseDate(
instance.settings.dateFormat ||
$.datepicker._defaults.dateFormat,
selectedDate, instance.settings);
dates.not(this).datepicker("option", option, date);
}
});