$(function() {
        var ncal_individual_pickup_hours = [];
        var ncal_individual_pickup_hours_helper = []; // to overcome JS' limitation to of not being able to use assoc arrays >:[

        var ncal_individual_delivery_hours = ncal_individual_delivery_hours_helper = [];

        ncal_individual_pickup_hours.push("8 9 10");
        ncal_individual_pickup_hours_helper.push("07/31/2015");
        ncal_individual_pickup_hours.push("8 9 10");
        ncal_individual_pickup_hours_helper.push("08/01/2015");
        ncal_individual_pickup_hours.push("8 9 10");
        ncal_individual_pickup_hours_helper.push("08/03/2015");
        ncal_individual_delivery_hours.push("17 18 19 20");
        ncal_individual_delivery_hours_helper.push("07/31/2015");
        ncal_individual_delivery_hours.push("17 18 19 20");
        ncal_individual_delivery_hours_helper.push("08/01/2015");
        ncal_individual_delivery_hours.push("17 18 19 20");
        ncal_individual_delivery_hours_helper.push("08/03/2015");
        ncal_individual_delivery_hours.push("17 18 19 20");
        ncal_individual_delivery_hours_helper.push("08/04/2015");

        function fill_select_times(array_hours, selector) {
            array_hours = array_hours.split(" ");
            ar_hrs_c = array_hours.length;

            $(selector).empty();

            $.each(array_hours, function(index, value) {
                if (index == (ar_hrs_c - 1)) {
                    return false;
                }

                if (index == 0) {
                    var selected = "selected";
                } else {
                    var selected = "";
                }

                if (value > 12) {
                    ampm = "pm";
                } else {
                    ampm = "am";
                }

                var next_hour = array_hours[index + 1];

                if (next_hour > 12) {
                    ampm2 = "pm";
                } else {
                    ampm2 = "am";
                }

                var option_text = value + ampm;
                option_text += " - " + next_hour + ampm2;
                var value_value = option_text;

                $(selector).append('<option value="' + value_value + '"' + selected + '>' + option_text + '</option>');
            });
        }

        // for when page intially loads
        fill_select_times(ncal_individual_pickup_hours[0], "#pickup_times");


        // date changed on pickup calendar? update pickup hours for new date
        $("#pickup_date").on("dp.change", function(e) {
            var ncal_new_date = ($(this).val());
            var ncal_find_pickup_array = ncal_individual_pickup_hours_helper.indexOf(ncal_new_date);

            if (ncal_find_pickup_array == -1) {
                console.log("unexpected error"); // this shouldn't happen, but just to be safe
                return;
            }

            fill_select_times(ncal_individual_pickup_hours[ncal_find_pickup_array], "#pickup_times");
        });


        $("#pickup_date").datetimepicker({
            pickDate: true,
            pickTime: false,
            //dateFormat: 'dd-mm-yyyy',
            dateFormat: 'mm/dd/yyyy',
            enabledDates: ["07/31/2015","08/01/2015","08/03/2015",],
            defaultDate: "07/31/2015"
        });

        $("#delivery_date").datetimepicker({
            pickDate: true,
            pickTime: false,
            dateFormat: 'mm/dd/yyyy',
            defaultDate: "07/31/2015"
        });
    });