Restrict Previous Dates in DateTime Picker

Is it possible to have the DateTimePicker block out past dates from being selected, only allowing todays, tomorrow and future dates in Jquery ...

<script>

                               

                                var startDateTextBox = $('#<%=txtStartDate.ClientID%>');
                                var endDateTextBox = $('#<%=txtEndDate.ClientID%>');

                                startDateTextBox.datetimepicker({
                                    onClose: function (dateText, inst) {
                                        if (endDateTextBox.val() != '') {
                                            var testStartDate = startDateTextBox.datetimepicker('getDate');
                                            var testEndDate = endDateTextBox.datetimepicker('getDate');
                                            if (testStartDate > testEndDate)
                                                endDateTextBox.datetimepicker('setDate', testStartDate);

                                           
                                        }
                                           
                                        else {
                                            endDateTextBox.val(dateText);
                                        }
                                    },
                                    onSelect: function (selectedDateTime) {
                                        endDateTextBox.datetimepicker('option', 'minDate', startDateTextBox.datetimepicker('getDate'));
                                        
                                    }
                                });
                                endDateTextBox.datetimepicker({
                                    onClose: function (dateText, inst) {
                                        if (startDateTextBox.val() != '') {
                                            var testStartDate = startDateTextBox.datetimepicker('getDate');
                                            var testEndDate = endDateTextBox.datetimepicker('getDate');
                                            if (testStartDate > testEndDate)
                                                startDateTextBox.datetimepicker('setDate', testEndDate);
                                        }
                                        else {
                                            startDateTextBox.val(dateText);
                                        }
                                    },
                                    onSelect: function (selectedDateTime) {
                                        startDateTextBox.datetimepicker('option', 'maxDate', endDateTextBox.datetimepicker('getDate'));

                                    }
                                });
                            </script>

ramasagar