how to disable/enable and styling some date in the inline jquery calendar

calendar.js

var datesArray = ['2/9/2014'];
(function() {
	$( "#datepicker" ).datepicker({
		beforeShowDay: function (date)
		{
			var theday = date.getDate() +'/'+ (date.getMonth()+1) +'/'+ date.getFullYear();
			var thedates = datesArray.join('|');
			var bookedDateStyle = [true];

			if(thedates.indexOf(theday)!=-1)
			{
				bookedDateStyle = [false];
				bookedDateStyle.push("bookedDate");
			}

			return bookedDateStyle;
		}
	});
}(jQuery));