$(document).ready(function() {
            var options = {
                viewType: "Week",
                dayBeginsHour: 7,
                dayEndsHour: 18,
                businessBeginsHour: 8,
                businessEndsHour: 16,
                businessEndsDay: 4,
                headerDateFormat: "dd/MM/yyyy",
                events: { list: <?=json_encode($event_data);?> },
                onTimeRangeSelected: function(args) {
                    var start = args.start.value;
                    var end = args.end.value;

                    if (!is_day_acceptable(start)) {
                        alert("Bookings only available online for Monday to Wednesdays.");
                        $(".calendar_default_shadow").remove();
                        return false;
                    }

                    if (is_start_time_acceptable(start) && is_end_time_acceptable(end)) {
                        // do nothing, we carry on below
                    } else {
                        alert("Working hours are between 8am and 4pm.");
                        $(".calendar_default_shadow").remove();
                        return false;
                    }

                    $.ajax({
                        url: "/booking",
                        data: { start: start, end: end },
                        dataType: "json",
                        type: "post",
                        success: function(result) {
                            if (!result.success) {
                                alert(result.message);
                                $(".calendar_default_shadow").remove();
                                return false;
                            }
                            // otherwise we can book it
                            window.location.href = "/booking/form";
                        }
                    });
                },
                onBeforeCellRender: function(args) {
                    console.log("Rendering cell: ", args.cell.start.toString("yyyy-MM-dd"), "Day of Week: ", args.cell.start.getDayOfWeek());

                    // Mark weekends as non-business days
                    if (args.cell.start.getDayOfWeek() === 0 || args.cell.start.getDayOfWeek() === 6) {
                        args.cell.cssClass = "non-business-day"; 
                        console.log("Weekend: ", args.cell.start.toString("yyyy-MM-dd"));  // Debugging line
                    }

                    // Mark Thursday, Friday, and Saturday as non-business days
                    if (args.cell.start.getDayOfWeek() === 4 || args.cell.start.getDayOfWeek() === 5 || args.cell.start.getDayOfWeek() === 6) {
                        args.cell.cssClass = "non-business-day";
                        console.log("Non-business day: ", args.cell.start.toString("yyyy-MM-dd"));  // Debugging line
                    }
                }
            };

            $("#calendar").daypilotCalendar(options);